The following points should be considered when selecting the proper coated electrode. 1. Match the mechanical properties of the base metal.

Transcription

1 HQ Aluminum Elect The following points should be considered when selecting the proper coated electrode. 1. Match the mechanical properties of the base metal. 2. Match the chemical composition of the base metal as closely as possible. 3. Match electrode to available power supply AC or DCEN (electrode negative) or DCEP (electrode positive). 4. Match the electrode to the position of the weld. 5. Observe joint design Use deep penetrating electrodes for tight fit-up and unbeveled joints. Use light penetration electrodes for poor fit-up and thin material. 6. Observe service conditions and select electrode accordingly High temperature, low temperature, corrosive atmosphere, impact loading. These conditions are best met by using low hydrogen electrodes. 7. Consider welding costs Highest deposition rate is in the flat position. Use high iron power electrodes to further increase deposition. By far, the largest factor is labor and overhead. 1

2 Elect AWS FILLER METAL SPECIFICATION A5.1 MILD STEEL COVERED ELECTRODES EXAMPLE: E (1) (2) (3) ---- (4) 1.E Stands for electrode. 2.Two digits indicate tensile strength x 1000 PSI. 3.Third digit refers to welding position. EXX1X All position (flat, horizontal, vertical, overhead). EXX2X Horizontal and flat only. EXX3X Flat position only. EXX4X Flat, overhead, horizontal, vertical down. 4.Last digit indicates usability of the electrode, i.e. type of current and the type of covering. In some cases, both the third and fourth digits are significant. Classification Current Penetration Covering & Slag Iron EXX10 DCEP Digging Deep Cellulose - sodium 0-10% EXXX1 AC or DCEP Digging Deep Cellulose - potassium 0 EXXX2 AC or DCEN Medium Medium Titania - sodium 0-10% EXXX3 AC or DCEN or DCEP Soft Light Titania - potassium 0-10% EXXX4 AC or DCEN or DCEP Soft Light Titania - iron powder 25-40% EXXX5 DCEP Medium Medium Low hyd. - sodium 0 EXXX6 AC or DCEP Medium Medium Low hyd. - potassium 0 EXXX8 AC or DCEP Medium Medium Low hyd. - iron powder 25-40% EXX20 AC or DCEN Medium Medium Iron oxide - sodium 0 EXX22 AC or DCEN or DCEP Medium Medium Iron oxide - sodium 0 EXX24 AC or DCEN or DCEP Soft Light Titania - iron powder 50% EXX27 AC or DCEN or DCEP Medium Medium Iron oxide- iron powder 50% EXX28 AC or DCEP Medium Medium Low hyd. - iron powder 50% EXX48 AC or DCEP Medium Medium Low hyd. - iron powder 25-40% DCEP Direct Current Positive DCEN Direct Current Negative Note: Iron powder percentage based on weight of the covering. 2

3 Elect Mild Covered Sureweld 10P-Plus AWS Class E6010 DCEP ( Positive) Imprint Marking: 6010 Code and Specification Data: AWS A5.1, Class E6010 Description: The gray coated Sureweld 10P-Plus is a modified version of the standard 10P electrode. It has also been developed for the pipe welding industry but has a more consistent burn-off and a more forgiving arc burn. This provides a better bead profile and sidewall fusion with lower spatter. Sureweld 10P-Plus will maintain the proper keyhole in an open root and will produce X-ray quality joints in the flat, horizontal, overhead, vertical-up, and vertical-down procedures. Sureweld 10P is recommended for welding API grades A25, A, B, and X42 pipe and general structural, ship, barge, and storage tank fabrication. It may also be used for welding root passes in higher grade pipe in some circumstances. Procedure: Hold a short arc, but do not allow the coating to touch the molten pool. A slight oscillating motion is recommended in the horizontal and flat positions. Use a short whipping motion on vertical and overhead welds, allowing only enough time out of the crater for the metal to set up. Clean thoroughly between passes. Vertical down and flat position welds should be made at approximately the same amperages. Continued on next page... 3

4 Elect Typical Mechanical Properties As Welded Yield Strength, psi (MPa) 67,100 (463) Tensile Strength, psi (MPa) 79,800 (550) % Elongation in 2" (51 mm) 29 Typical Charpy V-Notch Properties As Welded Testing Temp. ft.-lbs. (J) 0 F (-18 C) 27 (37) -20 F (-29 C) 22 (30) Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Standard Diameters 3/32" (2.4 mm), 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm) Packaged in Tear Strip Cans Recommended Welding Parameters page 24 4

5 Elect Sureweld 10P AWS Class E6010 DCEP ( Positive) Imprint Marking: 6010 Code and Specification Data: AWS A5.1, Class E6010 ABS - AWS A5.1 CWB-CSA 48.1, E41010 Description: The new red coated Sureweld 10P is an all-position cellulosic electrode developed for the pipe welding industry in order to improve ductility in the weld deposit while maintaining the standard welding characteristics needed for a pipe welding electrode. Sureweld 10P produces a steady, deep penetrating arc and maintains the proper keyhole in an open root. This electrode will produce X-ray quality joints in flat, horizontal, overhead, vertical-up, and vertical-down procedures. Sureweld 10P is recommended for welding API grades A25, A, B, and X42 pipe and general structural, ship, barge, and storage tank fabrication. It may also be used for welding root passes in higher grade pipe in some circumstances. Procedure: Hold a short arc, but do not allow the coating to touch the molten pool. A slight oscillating motion is recommended in the horizontal and flat positions. Use a short whipping motion on vertical and overhead welds, allowing only enough time out of the crater for the metal to set up. Clean thoroughly between passes. Vertical down and flat position welds should be made at approximately the same amperages. Continued on next page... 5

6 Elect Typical Mechanical Properties As Welded Yield Strength, psi (MPa) 67,100 (463) Tensile Strength, psi (MPa) 79,800 (550) % Elongation in 2" (51 mm) 29 Typical Charpy V-Notch Properties As Welded Testing Temp. ft.-lbs. (J) 0 F (-18 C) 27 (37) -20 F (-29 C) 22 (30) Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Standard Diameters 3/32" (2.4 mm), 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm) Packaged in Tear Strip Cans Recommended Welding Parameters page 24 6

7 Elect Sureweld 710P AWS Class E7010-P1 DCEP ( Positive) Imprint Marking: 7010-P1 Code and Specification Data: AWS A5.5, Class E7010-P1 CWB-CSA 48.1, E41010 Description: Sureweld 710P is an all-position cellulosic electrode that is especially suited for welding high strength pipe. It produces the consistent, deep penetration required to maintain a proper keyhole when vertical-down welding in open root pipe joints. X-ray quality joints can be produced with Sureweld 710P using flat, horizontal, overhead, vertical-up, and vertical-down welding procedures. Sureweld 710P is recommended for welding API grades X46, X52, and X56 pipe. It may also be used for welding root passes in higher grade pipe in some circumstances. Procedure: Hold a short arc, but do not allow the coating to touch the molten pool. A slight oscillating motion is recommended in the horizontal and flat positions. Use a short whipping motion on vertical and overhead welds, allowing only enough time out of the crater for the metal to set up. Clean thoroughly between passes. Vertical down welds should be made at approximately the same amperages as recommended for the flat position. Continued on next page... 7

8 Elect Typical Mechanical Properties As Welded Yield Strength, psi (MPa) 69,800 (481) Tensile Strength, psi (MPa) 81,200 (560) % Elongation in 2" (51 mm) 22 Typical Charpy V-Notch Properties As Welded Testing Temp. ft.-lbs. (J) -20 F (-29 C) 29 (39) -50 F (-46 C) 26 (35) Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Ni Mo Standard Diameters 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm) Packaged in Tear Strip Cans Additional Sureweld listed on page 24 8

9 Elect Sureweld 810P AWS Class E8010-P1 DCEP ( Positive) Imprint Marking: 8010-P1 Code and Specification Data: AWS A5.5, Class E8010-P1 CWB-CSA 48.1, E41010 Description: Sureweld 810P is an all-position cellulosic electrode that is especially suited for welding high strength pipe. It produces the consistent, deep penetration required to maintain a proper keyhole when vertical-down welding in open root pipe joints. X-ray quality joints can be produced with Sureweld 810P using flat, horizontal, overhead, vertical-up, and vertical-down welding procedures. Sureweld 810P is recommended for welding API grades X60, X65, and X70 pipe. Procedure: Hold a short arc, but do not allow the coating to touch the molten pool. A slight oscillating motion is recommended in the horizontal and flat positions. Use a short whipping motion on vertical and overhead welds, allowing only enough time out of the crater for the metal to set up. Clean thoroughly between passes. Vertical down welds should be made at approximately the same amperages as recommended for the flat position. Continued on next page... 9

10 Elect Typical Mechanical Properties As Welded Yield Strength, psi (MPa) 72,700 (501) Tensile Strength, psi (MPa) 88,300 (609) % Elongation in 2" (51 mm) 24 Typical Charpy V-Notch Properties As Welded Testing Temp. ft.-lbs. (J) -20 F (-29 C) 31 (42) -50 F (-46 C) 25 (34) Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Ni Mo Standard Diameters 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm) Packaged in Tear Strip Cans Additional Sureweld listed on page 24 10

11 Elect Sureweld SW-14 AWS Class E6011 AC-DCEP ( Positive) Imprint Marking: 6011 Code and Specification Data: AWS A5.1, ASME SFA 5.1 (A-1, F-3) ABS - AWS A5.1 Military - MIL-6011 CWB-CSA W48.1, E41011 Description: Sureweld SW-14 is an all-position cellulosic electrode designed for AC. It produces an easily controlled forceful arc with deep penetration and a high quality weld metal which will pass specification requirements for radiography. Typical applications include welding of bridges, buildings, piping, shipbuilding, pressure vessels, and tanks. Procedure: Hold a medium to short arc tilted 5 to 15 in the direction of travel with the electrode at an angle of 45 to each plate in fillet welds. Weave with slight oscillating motion, hesitating at the edges to insure proper fusion. Clean slag before depositing next bead. Continued on next page... 11

12 Elect Typical Mechanical Properties As Welded Yield Strength, psi (MPa) 66,800 (460) Tensile Strength, psi (MPa) 76,100 (525) % Elongation in 2" (51 mm) 22 % Reduction in Area 56 Typical Charpy V-Notch Properties As Welded Testing Temp. ft.-lbs. (J) -20 F (-29 C) 31 (42) Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Standard Diameters 3/32" (2.4 mm), 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm) Packaged in Tear Strip Cans Additional Sureweld listed on page 25 12

13 Elect Sureweld SW-612 AWS Class E6012 AC-DCEN ( Negative) Imprint Marking: 6012 Code and Specification Data: AWS A5.1, ASME SFA 5.1 (A-1, F-2) CWB-CSA W48.1, E41012 Description: Sureweld SW-612 is a multi-purpose rutile electrode that retains advantage of poor fit-up welding and convex bead along with smooth arc of iron powder. It also takes high amperage of production welding. Typical applications include truck bodies, trailers, tanks, farm machinery, and auto parts. Procedure: With the electrode tilted 5 to 15 in the direction of travel, hold a short arc or lightly touch coating to work holding sufficient current so electrode does not stick. For vertical welding, weld from the bottom up for heavy beads and from the top down for small beads. Typical Mechanical Properties As Welded Yield Strength, psi (MPa)` 62,300 (430) Tensile Strength, psi (MPa) 69,400 (479) % Elongation in 2" (51 mm) 21 % Reduction in Area 54 Continued on next page... 13

14 Elect Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Standard Diameters 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm), 1/4" (6.4 mm) Recommended Welding Parameters page 25 14

15 Elect Sureweld SW-15 AWS Class E6013 AC-DCEN ( Negative) Imprint Marking: 6013 Code and Specification Data: AWS A5.1, ASME SFA 5.1 (A-1, F-2) ABS - AWS A5.1 CWB-CSA W48.1, E41013 Description: Sureweld SW-15 has a wide range of applications for light gauge and heavy plate. High heat and speeds can be used without undercut. Slag easy to clean and on heavy plates is often self-cleaning. Typical applications include metal fixtures, road equipment, farm machinery, building structures, storage tanks, iron work. Procedure: For flat welds, tilt 5 to 10 in direction of travel holding a medium arc. On horizontal fillets, tilt 5 to 15 in direction of travel at an angle bisecting vertical and base plate, maintaining a short arc length. Vertical-up, use a weaving U or V arc motion using medium to short arc length. With overhead use a circular motion. Typical Mechanical Properties As Welded Yield Strength, psi (MPa) 63,000 (434) Tensile Strength, psi (MPa) 71,000 (490) % Elongation in 2" (51 mm) 24 % Reduction in Area 49 Continued on next page... 15

16 Elect Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Standard Diameters 3/32" (2.4 mm), 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm), 7/32" (5.6 mm), 1/4" (6.4 mm) Additional Sureweld listed on page 26 16

17 Elect Sureweld 6013-LV AWS Class E6013 AC-DCEN ( Negative) Imprint Marking: 6013 Code and Specification Data: AWS A5.1, ASME SFA 5.1 CWB-CSA W48.1, E41013 Description: Sureweld 6013-LV is an all-position multi-purpose electrode is designed for light duty applications. It is ideally suited for the hobbyist welder. The low voltage feature permits its use on AC power sources that have less than 50 open circuit volts LV can be used on thin gauge carbon and galvanized steels. Excellent choice for applications where offsets or fit-up is a problem. Procedure: Maintain a short arc, tilt electrode 5 to 15 in the direction of travel for flat and horizontal fillets. When welding vertical, use a weaving U or V motion. Clean slag thoroughly between passes. Typical Mechanical Properties As Welded Yield Strength, psi (MPa) 65,300 (451) Tensile Strength, psi (MPa) 74,400 (513) % Elongation in 2" (51 mm) 27 % Reduction in Area 52 Continued on next page... 17

18 Elect Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Standard Diameters 5/64" (2.0 mm), 3/32" (2.4 mm), 1/8" (3.2 mm), 5/32" (4.0 mm) Recommended Welding Parameters page 26 18

19 Elect Sureweld SW-15 IP AWS Class E7014 AC-DC Imprint Marking: 7014 Code and Specification Data: AWS A5.1, ASME SFA 5.1 (A-1, F-2) ABS - AWS A5.1 Description: Sureweld SW-15 IP is an iron-powder electrode permitting the use of higher welding currents while improving the deposition rate and efficiency. High speeds and high heats can be used without undercut. Slag removal is excellent. Typical applications include construction equipment, metal fixtures, automotive parts, barges and farm machinery. Procedure: Open or drag technique may be used. Use medium to short arc on open arc. When welding vertical-up, tilt the electrode 5-15 in the direction of travel and use a weaving U or V arc motion while holding a medium to short arc length. A circular arc motion is preferred for welding overhead. Clean slag thoroughly between passes. Continued on next page... 19

20 Elect Typical Mechanical Properties As Welded Yield Strength, psi (MPa) 61,000 (421) Tensile Strength, psi (MPa) 71,300 (492) % Elongation in 2" (51 mm) 28 % Reduction in Area 64 Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Standard Diameters 3/32" (2.4 mm), 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm) Additional Sureweld listed on page 27 20

21 Elect Sureweld 7024 AWS Class E7024: Conforms to AC-DC Imprint Marking: Y Code and Specification Data: AWS A5.1, ASME SFA 5.1 (A-1, F-1) ABS Filler Grade 2-2Y (non-low hydrogen) Military - AWS A5.1 CWB-CSA W48.1, E48024 Description: Sureweld 7024 is a high speed, heavy-coated, iron-powder electrode for high deposition rates on horizontal and downhand welding. Excellent operator appeal, produces equal leg 45 fillets, thereby eliminating overwelding. Excellent bead appearance and self-cleaning slag. This electrode has good weldability and superior mechanical properties. It is particularly useful in obtaining increased penetration with little or no root porosity in horizontal or positioned fillets is ideal for making high speed horizontal fillet and lap welds on mild and some alloy steels, such as earth-moving and construction equipment, truck bodies, ships, barges, and railcars. Procedure: Drag technique should be used on horizontal and flat fillets. Tilt electrodes 5 to 10 in direction of travel and 40 to 50 from base plate in horizontal fillet. No weaving is necessary. Continued on next page... 21

22 Elect Typical Mechanical Properties As Welded Yield Strength, psi (MPa) 71,000 (490) Tensile Strength, psi (MPa) 81,000 (559) % Elongation in 2" (51 mm) 26 % Reduction in Area 63 Typical Charpy V-Notch Properties As Welded Testing Temp. ft.-lbs. (J) 0 F (-18 C) 25 (34) Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Standard Diameters 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm), 7/32" (5.6 mm), 1/4" (6.4 mm) Recommended Welding Parameters page 28 22

23 Elect Additional Sureweld * Sureweld SW-75 (E7010-A1) Sureweld SW-70LA-2 (E7016) * Note: For technical information contact the Marketing Department 23

24 Elect Dimension Chart Diameter Length Inches mm Inches mm 5/ / / / / / / / Sureweld Coated Deposition Data and Current Ranges* Deposition Diameter Range Optimum Rate lbs./hr. Efficiency in. (mm) Amperage Amperage (kg/hr) % E6010/E7010-A1/E7010-P1/E8010-P1 3/32 (2.4) (0.7) /8 (3.2) (0.9) (1.0) /32 (4.0) (1.3) (1.3) /16 (4.8) (1.5) (1.6) /32 (5.6) (2.0) (2.3) 73.1 Continued on next page... 24

25 Elect Sureweld Coated Deposition Data and Current Ranges* Deposition Diameter Range Optimum Rate lbs./hr. Efficiency in. (mm) Amperage Amperage (kg/hr) % E6011 3/32 (2.4) (0.6) /8 (3.2) (1.0) /32 (4.0) (1.7) /16 (4.8) (1.9) /32 (5.6) (2.3) /4 (6.4) (2.5) 71.9 E6012 1/8 (3.2) (1.3) /32 (4.0) (1.5) (1.5) /16 (4.8) (1.8) (1.9) /32 (5.6) (2.5) /4 (6.4) (2.5) (3.0) (3.2) 66.0 * Note: Efficiencies for coated electrodes do not include stub loss. 25

26 Elect Sureweld Coated Deposition Data and Current Ranges* Deposition Diameter Range Optimum Rate lbs./hr. Efficiency in. (mm) Amperage Amperage (kg/hr) % E6013/E6013LV 5/64 (2.0) (0.6) /32 (2.4) (0.7) /8 (3.2) (1.0) /32 (4.0) (1.2) (1.4) (1.6) /16 (4.8) (1.5) (1.7) (1.9) /32 (5.6) (2.4) (2.6) (2.8) /4 (6.4) (2.8) (2.9) (3.2) 72.1 Continued on next page... 26

27 Elect Sureweld Coated Deposition Data and Current Ranges* Deposition Diameter Range Optimum Rate lbs./hr. Efficiency in. (mm) Amperage Amperage (kg/hr) % E7014 E7016 3/32 (2.4) (0.9) /8 (3.2) (1.1) (1.4) /32 (4.0) (1.4) (1.7) /16 (4.8) (2.0) (2.5) /32 (5.6) (2.6) (3.2) /4 (6.4) (3.2) (3.9) /32 (2.4) (0.7) /8 (3.2) (0.8) (1.0) /32 (4.0) (1.4) (1.5) (1.6) /16 (4.8) (1.7) (1.9) (2.0) (2.2) /4 (6.4) (2.7) (2.9) (3.1) (3.4)

28 Elect Sureweld Coated Deposition Data and Current Ranges* Deposition Diameter Range Optimum Rate lbs./hr. Efficiency in. (mm) Amperage Amperage (kg/hr) % E7024/ /8 (3.2) (1.9) (2.3) /32 (4.0) (2.4) (2.9) (3.3) /16 (4.8) (3.4) (3.8) (4.1) /32 (5.6) (4.3) (5.3) /4 (6.4) (5.7) 71.7 * Note: Efficiencies for coated electrodes do not include stub loss. 28

29 Elect Stub Loss Correction Table for Coated 2" 3" 4" 5" Deposition (50 mm) (75 mm) (100 mm) (125 mm) Efficiency STUB STUB STUB STUB 12" (300 mm) 60% 50.0% 45.0% 40.0% 35.0% 65% 54.2% 48.7% 43.3% 37.9% 70% 58.3% 52.5% 46.6% 40.8% 75% 62.5% 56.2% 50.0% 43.7% 80% 66.6% 60.0% 53.3% 46.6% 14" (350 mm) 60% 51.4% 47.1% 42.8% 38.5% 65% 55.7% 51.1% 46.4% 41.8% 70% 60.0% 55.0% 50.0% 45.0% 75% 64.3% 58.9% 53.6% 48.2% 80% 68.5% 62.8% 57.1% 51.4% 18" (450 mm) 60% 53.3% 50.0% 46.6% 43.3% 65% 57.7% 54.2% 50.5% 46.9% 70% 62.2% 58.3% 54.4% 50.5% 75% 66.6% 62.5% 58.3% 54.2% 80% 71.1% 66.6% 62.2% 57.7% 29

30 Elect TYPE Sureweld Covered per lb (kg) Diameter in. (mm) 5/64 (2.0) 3/32 (2.4) 1/8 (3.2) 5/32 (4.0) 3/16 (4.8) 7/32 (5.6) 1/4 (6.4) Length in. (mm) 12 (300) 12 (300) 14 (350) 14 (350) 14 (350) 18 (450) 18 (450) 18 (450) 10P 35.3 (78) 17.1 (38) 11.2 (25) 7.9 (17) 10P-Plus 35.3 (78) 17.1 (38) 11.2 (25) 7.9 (17) 710P 35.3 (78) 17.1 (38) 11.2 (25) 7.9 (17) 810P 35.3 (78) 17.1 (38) 11.2 (25) 7.9 (17) SW (80) 17.5 (39) 11.6 (26) 8.0 (18) 4.6 (10) 3.4 (7.5) SW (34) 10.5 (23) 7.6 (17) 2.1 (4.6) SW (80) 17.2 (38) 11.1 (24) 7.6 (17) 4.3 (9.5) 3.3 (7.3) 6013LV 46.3 (102) 35.4 (80) 17.2 (38) 11.1 (24) SW (81) 17.3 (38) 11.2 (25) 7.9 (17) SW-15 IP 27.9 (62) 13.3 (29) 9.2 (20) 6.3 (14) 3.5 (7.7) 2.8 (6.2) 70 LA (32) 9.7 (21) 7.0 (15) 3.1 (6.8) (21) 6.2 (14) 3.4 (7.5) 2.5 (5.5) 2.0 (4.4) 30

31 Elect ATOM ARC Iron Low Hydrogen The introduction of iron powder into low hydrogen electrodes greatly increased productivity, making the use of Atom for most welding operations more than competitive with common mild steel electrodes in overall cost. The real advantage of course is that by improving the efficiency of welding operations, fabricators have a means of equalizing increasing overhead and labor costs. Moisture Resistant Coating Atom electrodes are manufactured with a flux coating that effectively resists moisture pick-up for many hours after the container is opened. This improved coating provides an extra degree of reliability, especially for electrodes exposed to high temperature, high humidity working conditions. 0.5 Typical % Moisture in Atom Coatings As 1 Hr. 2 Hr. 4 Hr. 8 Hr Rcv d 70 Deg. F/70% R.H. 80 Deg. F/80% R.H It should be noted that even though Atom electrodes resist moisture pick-up longer than ever before, no moisture resistant electrode will eliminate the need for storage and rebake ovens or the necessity to follow code requirements for allowable exposure times. The graph above shows the rate of moisture pick-up of Atom electrodes. Continued on next page... 31

32 Elect Storage Unopened containers can be stored safely for an indefinite length of time under normal dry storage conditions. They should be protected from humid air after the container is opened by being kept at 225 F to 300 F, (107 C to 149 C) or if the need arises, they can be reconditioned by baking for one hour at 700 F (371 C). 32

33 Elect AWS Filler Metal Specification A5.5 Low Alloy Covered E-XX 1 8-XX Chemical Composition of Weld Deposit. See AWS Spec. A5.5 Min. Tensile Strength, ksi All Position Iron, Low Hydrogen AC or DCEP ( Positive) 33

34 Elect Low Hydrogen Covered Atom 7018 AWS Class E7018 AC-DCEP ( Positive) Imprint Marking: 7018 Code and Specification Data: AWS A5.1, ASME SFA 5.1 Det Norske Veritas - 3YHH Military - MIL-E-22200/1, Lloyds - 3-3YH MIL 7018 CWB-CSA W48.1, E48018 ABS - AWS A5.1, 2Y Description: Atom 7018 is an iron powder, low hydrogen moisture resistant electrode. The wider operating ranges and smooth weld metal transfer minimizes post weld clean up. This premium quality electrode meets a multitude of codes and welding specifications. Atom 7018 was developed to weld carbon and low alloy steels, including a variety of hardenable steels. Typical Mechanical Properties Stress Relieved 8 hrs. As F (621 C) Yield Strength, psi (MPa) 68,000 (469) 57,300 (395) Tensile Strength, psi (MPa) 78,000 (538) 70,600 (487) % Elongation in 2" (51 mm) % Reduction in Area Continued on next page... 34

35 Elect Typical Charpy V-Notch Impact Properties Stress Relieved 8 hrs. As F (621 C) Testing Temp. ft.-lbs. (J) ft.-lbs. (J) -20 F (-29 C) 168 (228) 193 (262) Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Preheat: Preheat is generally not required with Atom 7018 to prevent underbead cracking. Preheat should be used with hardenable steels to prevent the formation of hard heat-affected zones and eliminate tendencies toward quench cracking on cooling. Preheat may also be required in welding heavy sections. Standard Diameters 3/32" (2.4 mm), 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm), 7/32" (5.6 mm), 1/4" (6.4 mm) Packaged in Tear Strip Cans Recommended Welding Parameters page 80 35

36 Elect Atom AWS Class E AC-DCEP ( Positive) Imprint Marking: Code and Specification Data: AWS A5.1, ASME SFA 5.1 Det Norske Veritas - 3Y(H10) ABS - AWS A5.1, 3-3YHH CWB-CSA W48.1, E Lloyds - 3-3YH Description: Atom is an all-position, low hydrogen, iron powder electrode that displays exceptional impacts at low temperatures in both the as welded and stress relieved conditions. It more than meets the AWS minimum of 20 ft.-lbs. (27 J) at -50 F (-10 C). The smooth metal transfer minimizes spatter and the complete slag coverage is designed for easy removal. Atom is intended for a wide variety of carbon and low alloy steels in the 50 ksi (345 MPa) minimum yield. It is ideal for applications that require impact toughness at low temperatures. 36

37 Elect Typical Mechanical Properties Stress Relieved 8 hrs. As F (621 C) Yield Strength, psi (MPa) 69,000 (476) 57,700 (398) Tensile Strength, psi (MPa) 81,600 (563) 72,700 (501) % Elongation in 2" (51 mm) % Reduction in Area Typical Charpy V-Notch Impact Properties Stress Relieved 8 hrs. As F (621 C) Testing Temp. ft.-lbs. (J) ft-lbs. (J) -50 F (-46 C) 104 (141) 165 (224) Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Preheat: See preheat instructions for Atom Standard Diameters 3/32" (2.4 mm), 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm), 7/32" (5.6 mm), 1/4" (6.4 mm) Packaged in Tear Strip Cans 37

38 Elect Atom 7018-AC AWS Class E7018 AC-DCEP ( Positive) Imprint Marking: 7018AC Code and Specification Data: AWS A5.1, ASME SFA 5.1 CWB-CSA 48.1, E48018 Description: Atom 7018AC is a product specifically designed to have optimum arc characteristics when used with AC power sources having 75 to 80 open circuit voltage. Compared to standard Atom 7018 operating on AC, this electrode will have easier arc starting and restrike, a smoother arc, and lower spatter. It is useable on a wide range of steels. Typical Mechanical Properties As Welded Yield Strength, psi (MPa) 77,500 (535) Tensile Strength, psi (MPa) 86,000 (593) % Elongation in 2" (51 mm) 29 % Reduction in Area 72 Continued on next page... 38

39 Elect Typical Charpy V-Notch Impact Properties As Welded Testing Temp. ft.-lbs. (J) -20 F (-29 C) 46 (62) Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Preheat: See preheat instructions for Atom Standard Diameters 3/32" (2.4 mm), 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm) Packaged in Tear Strip Cans Recommended Welding Parameters page 80 39

40 Elect Atom 7018-SR AWS Class E7018 AC-DCEP ( Positive) Imprint Marking: 7018-SR Code and Specification Data: AWS A5.1, ASME SFA 5.1 Description: Atom 7018-SR is an all-position, iron powder low hydrogen electrode. The moisture resistance and welder appeal is similar to other Atom electrodes. Atom 7018-SR was developed to maintain 70 ksi (483 MPa) tensile strength after 16 hours stress relieving. Typical Mechanical Properties Stress Relieved 8 hrs. 16 F As Welded (621 C) (621 C) Yield Strength, psi (MPa) 68,800 (474) 61,000 (421) 59,100 (407) Tensile Strength, psi (MPa) 83,100 (573) 76,800 (529) 74,100 (511) % Elongation in 2" (51 mm) % Reduction in Area

41 Elect Typical Charpy V-Notch Impact Properties Stress Relieved 8 hrs. 16 F (621 C) (621 C) Testing Temp As Welded ft-lbs. (J) ft-lbs. (J) -20 F (-29 C) 114 (195) 133 (180) 185 (250) Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Mo Standard Diameters 3/32" (2.4 mm), 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm) Packaged in Tear Strip Cans Additional Atom listed on page 78 41

42 Elect Carbon-Molybdenum (C-Mo) Atom 7018-Mo AWS Class E7018-A1 AC-DCEP ( Positive) Imprint Marking: 7018-A1 Code and Specification Data: AWS A5.5, ASME SFA 5.5 ABS - AWS A5.5 Military - MIL-E /7, MIL-7018-A1 Description: Atom 7018-Mo electrodes are recommended for welding low-alloy, high tensile steels of 50 ksi (345 MPa) minimum yield strength, and also the 0.50% Molybdenum steels. They are used in the fabrication and erection of boilers, pressure piping and tubing, and other presssure vessel applications. Typical Mechanical Properties (Tested according to MIL-E /7) Stress Relieved 1 hr. 8 hrs. As F (621 C) Yield Strength, psi (MPa) 75,000 (517) 74,300 (512) 73,300 (506) Tensile Strength, psi (MPa) 87,000 (600) 86,100 (594) 84,700 (584) % Elongation in 2" (51 mm) % Reduction in Area Continued on next page... 42

43 Elect Typical Charpy V-Notch Impact Properties Stress Relieved 1 hr. 8 hrs. As F (621 C) Testing Temp ft-lbs. (J) ft-lbs. (J) ft-lbs. (J) 72 F (22 C) 98 (133) 98 (133) 104 (141) 0 F (-18 C) 70 (95) 68 (92) 64 (87) -20 F (-29 C) 68 (92) 52 (71) 47 (64) Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Mo Preheat: Preheat should be used on hardenable steels to prevent the formation of a hard heat-affected zone. Preheat may also be required in welding heavy sections. Standard Diameters 3/32" (2.4 mm), 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm), 7/32" (5.6 mm), 1/4" (6.4 mm) Packaged in Tear Strip Cans Recommended Welding Parameters page 80 43

44 Elect Chromium-Molybdenum (Cr-Mo) Atom 7018-B2L AWS Class E7018-B2L AC-DCEP ( Positive) Imprint Marking: 7018-B2L Code and Specification Data: AWS A5.5, ASME SFA 5.5 Description: Atom 7018-B2L is a Cr-Mo electrode with an extra low carbon analysis. The limited carbon content in the weld metal is beneficial in reducing cracking in weldments. Atom 7018-B2L is carefully engineered to produce a stable arc when welding low alloy steels in the categories of 1/2% Cr - 1/2% Mo, 1% Cr - 1/2% Mo, 1-1/4% Cr - 1/2% Mo steels. Most grades of these steels are used in power piping, boiler work, castings and forgings. Typical Mechanical Properties Stress Relieved F (691 C) Yield Strength, psi (MPa) 74,400 (531) Tensile Strength, psi (MPa) 88,200 (609) % Elongation in 2" (51 mm) 29 % Reduction of Area 61 Continued on next page... 44

45 Elect Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Cr Mo Preheat: Preheat should be used on hardenable steels to prevent the formation of a hard heat-affected zone. Preheat may also be required in welding heavy sections. Standard Diameters 3/32" (2.4 mm), 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm), 7/32" (5.6 mm), 1/4" (6.4 mm) Packaged in Tear Strip Cans Additional Atom listed on page 78 45

46 Elect Atom 8018-CM AWS Class E8018-B2 AC-DCEP ( Positive) Imprint Marking: 8018-B2 Code and Specification Data: AWS A5.5, ASME SFA 5.5 Military - MIL-E /8, MIL-8018-B2 ABS - AWS A5.5 Description: Atom 8018-CM electrodes are used for the welding of such steels as 1/2% Cr - 1/2% Mo, 1% Cr - 1/2% Mo, and 1-1/4% Cr - 1/2% Mo, which are used principally in power piping and boiler work for the fabrication of plates, pipes, tubes, castings, and forgings. Typical Mechanical Properties Stress Relieved 1 hr. 8 F (691 F (691 C) Yield Strength, psi (MPa) 77,400 (534) 71,800 (495) Tensile Strength, psi (MPa) 89,700 (618) 85,800 (592) % Elongation in 2" (51 mm) % Reduction of Area Continued on next page... 46

47 Elect Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Cr Mo Preheat: Preheat should be used on hardenable steels to prevent the formation of a hard heat-affected zone. Preheat may also be required in welding heavy sections. Standard Diameters 3/32" (2.4 mm), 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm), 7/32" (5.6 mm), 1/4" (6.4 mm) Packaged in Tear Strip Cans Recommended Welding Parameters page 80 47

48 Elect Atom 8018-B3L AWS Class E8018-B3L AC-DCEP ( Positive) Imprint Marking: 8018-B3L Code and Specification Data: AWS A5.5, ASME SFA 5.5 Description: Atom 8018-B3L is a low carbon electrode designed for welding the nominal 2-1/4% Cr - 1% Mo steels. characteristics are stable and spatter is minimal. The low carbon analysis of the weld metal contributes to its crack resistance, and the careful blend of Cr and Mo provide the properties for weldments subjected to elevated temperature service. Typical Mechanical Properties Stress Relieved 1 F (691 C) Yield Strength, psi (MPa) 78,000 (538) Tensile Strength, psi (MPa) 93,200 (643) % Elongation in 2" (51 mm) 25 % Reduction of Area 68 Continued on next page... 48

49 Elect Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Cr Mo Preheat: Preheat should be used on hardenable steels to prevent the formation of a hard heat-affected zone. Preheat may also be required in welding heavy sections. Standard Diameters 3/32" (2.4 mm), 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm), 7/32" (5.6 mm), 1/4" (6.4 mm) Packaged in Tear Strip Cans Additional Atom listed on page 78 49

50 Elect Atom 8018-B6L AWS Class E8018-B6L AC-DCEP ( Positive) Imprint Marking: 8018-B6L Code and Specification Data: AWS A5.5, ASME SFA 5.5 Description: Atom 8018-B6L deposits a low carbon 5% Cr 1/2% Mo weld metal. It is designed for welding A200-T5, A335-P5, A387-Gr5 and similar steels. Applications tend to be in the petrochemical and petroleum industries, especially where resistance to hydrogen attack is required. Typical Mechanical Properties Stress Relieved 1 F (745 C) Yield Strength, psi (MPa) 95,000 (656) Tensile Strength, psi (MPa) 81,300 (561) % Elongation in 2" (51 mm) 25 Continued on next page... 50

51 Elect Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Cr Mo Ni Preheat: The recommended preheat temperature for 5CrMo steels is F depending on thickness. Post weld heat treatment is generally required. Standard Diameters and Packages 3/32" (2.4 mm), 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm), 1/4" (6.4 mm) Packaged in Tear Strip Cans Recommended Welding Parameters page 80 51

52 Elect Chromium-Molybdenum (Cr-Mo) Atom 9018-CM AWS Class E9018-B3 AC-DCEP ( Positive) Imprint Marking: 9018-B3 Code and Specification Data: AWS A5.5, ASME SFA 5.5 Military - MIL-E /8, MIL-9018-B3 ABS - AWS A5.5 Description: The principal application of Atom 9018-CM electrodes is welding the nominal 2-1/2% Cr - 1% Mo steels commonly found on pressure vessels, heat exchangers, and other related components. Typical Mechanical Properties Stress Relieved 1 hr. 8 F (691 F (691 C) Yield Strength, psi (MPa) 83,300 (574) 78,600 (542) Tensile Strength, psi (MPa) 99,500 (686) 94,200 (650) % Elongation in 2" (51 mm) Continued on next page... 52

53 Elect Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Cr Mo Preheat: Preheat should be used on hardenable steels to prevent the formation of a hard heat-affected zone. Preheat may also be required in welding heavy sections. Standard Diameters 3/32" (2.4 mm), 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm), 7/32" (5.6 mm), 1/4" (6.4 mm) Packaged in Tear Strip Cans Additional Atom listed on page 78 53

54 Elect Nickel (Ni) Atom 8018-SR AWS Class E8018-G AC-DCEP ( Positive) Imprint Marking: 8018-SR Code and Specification Data: AWS A5.5, ASME SFA 5.5 Description: Atom 8018-SR is an all-position, iron powder low hydrogen electrode. The moisture resistance and welder appeal is similar to other Atom electrodes. Atom 8018-SR was developed to maintain 80 ksi (552 MPa) after 50 hours stress relieved. Typical Mechanical Properties Stress Relieved* 8 hrs. 20 hrs F (621 C) (621 C) (621 C) Yield Strength, psi (MPa) 71,000 (490) 72,000 (493) 68,500 (470) Tensile Strength, psi (MPa) 85,000 (587) 84,500 (579) 82,000 (562) % Elongation in 2" (51 mm) % Reduction in Area Continued on next page... 54

55 Elect Typical Charpy V-Notch Impact Properties Stress Relieved* 8 hrs. 20 hrs F (621 C) (621 C) (621 C) Testing Temp. ft.-lbs. (J) ft.-lbs. (J) ft.-lbs. (J) 60 F (16 C) 160 (217) 172 (233) 165 (224) -50 F (-46 C) 108 (146) 106 (144) 114 (155) *Stress Relieved plates welded at 450 F interpass Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Ni Mo Preheat: Preheat should be used on hardenable steels to prevent the formation of a hard heat-affected zone. Preheat may also be required in welding heavy sections. Standard Diameters 3/32" (2.4 mm), 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm) Packaged in Tear Strip Cans Recommended Welding Parameters page 80 55

56 Elect Atom 8018 AWS Class E8018-C3 AC-DCEP ( Positive) Imprint Marking: 8018-C3 Code and Specification Data: AWS A5.5, ASME SFA 5.5 Military - MIL-E /1, MIL-8018-C3 ABS - AWS A5.5, 3Y Lloyds - 3-3YH Description: Atom 8018 electrodes deposit 1% Ni weld metal. They are used primarily to weld high-tensile steels in the ksi ( MPa) tensile strength range, especially where notch toughness at temperatures as low as -40 F (-40 C) is required. Typical Mechanical Properties Stress Relieved 8 hrs. As F (621 C) Yield Strength, psi (MPa) 74,000 (513) 70,000 (483) Tensile Strength, psi (MPa) 85,300 (589) 81,400 (562) % Elongation in 2" (51 mm) Continued on next page... 56

57 Elect Typical Charpy V-Notch Impact Properties Stress Relieved 8 hrs. As F (621 C) Testing Temp. ft.-lbs. (J) ft.-lbs. (J) -20 F (-29 C) 124 (168) 129 (175) -40 F (-40 C) 114 (155) 115 (156) Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Ni Preheat: Preheat should be used on hardenable steels to prevent the formation of a hard heat-affected zone. Preheat may also be required in welding heavy sections. Standard Diameters 3/32" (2.4 mm), 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm), 7/32" (5.6 mm), 1/4" (6.4 mm) Packaged in Tear Strip Cans Additional Atom listed on page 78 57

58 Elect Atom 8018-C1 AWS Class E8018-C1 AC-DCEP ( Positive) Imprint Marking: 8018-C1 Code and Specification Data: AWS A5.5, ASME SFA 5.5 ABS - AWS A5.5, 3Y Lloyds - 3-3YH Description: Atom 8018-C1 electrodes deposit weld metal which contains nominal 2-1/3% Ni. Their principal use is in the welding of nickel-bearing steels for low temperature applications where toughness of the weld metal at low temperature is important. Typical Mechanical Properties Stress Relieved 1 hr. As F (621 C) Yield Strength, psi (MPa) 80,500 (550) 75,200 (519) Tensile Strength, psi (MPa) 90,300 (623) 86,000 (593) % Elongation in 2" (51 mm) % Reduction of Area Continued on next page... 58

59 Elect Typical Charpy V-Notch Impact Properties Stress Relieved 1 hr. As F (621 C) Testing Temp. ft.-lbs. (J) ft.-lbs. (J) -75 F (-59 C) 47 (64) 64 (87) Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Ni Preheat: Preheat should be used on hardenable steels to prevent the formation of a hard heat-affected zone. Preheat may also be required in welding heavy sections. Standard Diameters 3/32" (2.4 mm), 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm), 7/32" (5.6 mm), 1/4" (6.4 mm) Packaged in Tear Strip Cans Recommended Welding Parameters pg

60 Elect High Strength Atom 9018SR AWS Class E9018-G AC-DCEP ( Positive) Imprint Marking: 9018-G Code and Specification Data: AWS A5.5-96, ASME SFA 5.5 Description: Atom 9018SR is an all-position, low hydrogen iron powder electrode with outstanding moisture resistance and welder appeal. The "G" classification of 9018SR is the result of higher Mn and Mo levels and a maximum Ni of 1.1%. Typical Mechanical Properties (@450 Interpass Temp.) Stress Relieved 20 F (621 C) Yield Strength, psi (MPa) 87,100 (601) Tensile Strength, psi (MPa) 99,100 (684) % Elongation in 2" (51 mm) 24 % Reduction of Area 68 Continued on next page... 60

61 Elect Typical Charpy V-Notch Impact Properties Stress Relieved 20 F (621 C) Testing Temp. ft.-lbs. (J) 60 F (16 C) 91 (123) -50 F (-46 C) 36 (49) Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Cr Ni Mo V Cu Preheat: Preheat should be used on hardenable steels to prevent the formation of a hard heat-affected zone. Preheat may also be required in welding heavy sections. Standard Diameters 3/32" (2.4 mm), 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm) Packaged in Tear Strip Cans Additional Atom listed on page 78 61

62 Elect Atom 9018 AWS Class E9018-M AC-DCEP ( Positive) Imprint Marking: 9018-M Code and Specification Data: AWS A5.5, ASME SFA 5.5 Military - MIL-E /1, MIL-9018-M ABS - 3Y Lloyds - 3YH Description: Atom 9018 electrodes are used for attachment welds on T1, HY-80 and HY-90 steels, and other hightensile, quenched and tempered steels. Typical Mechanical Properties Stress Relieved 24 hrs. As F (593 C) Yield Strength, psi (MPa) 83,900 (579) 68,100 (470) Tensile Strength, psi (MPa) 94,800 (654) 92,300 (637) % Elongation in 2" (51 mm) % Reduction of Area Continued on next page... 62

63 Elect Typical Charpy V-Notch Impact Properties Stress Relieved 24 hrs. As F (593 C) Testing Temp. ft.-lbs. (J) ft.-lbs. (J) -60 F (-51 C) 60 (81) 66 (92) Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Ni Mo Preheat: Preheat should be used on hardenable steels to prevent the formation of a hard heat-affected zone. Preheat may also be required in welding heavy sections. Standard Diameters 3/32" (2.4 mm), 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm), 7/32" (5.6 mm), 1/4" (6.4 mm) Packaged in Tear Strip Cans Recommended Welding Parameters page 80 63

64 Elect Atom 9018-B9 AWS Class E9018-B9 AC-DCEP ( Positive) Imprint Marking: 9018-B9 Code and Specification Data: AWS A5.5, ASME SFA 5.5 Description: Atom 9018-B9 is designed to weld the modified 9% Cr - 1% Mo steels known by the designations T91, P91 or Grade 91. These steels are designed to provide improved creep strength, toughness, and fatigue, and oxidation and corrosion resistance at elevated temperatures. Typical Mechanical Properties Stress Relieved 1 F (746 C) Yield Strength, psi (MPa) 104,400 (470) Tensile Strength, psi (MPa) 120,200 (637) % Elongation in 2" (51 mm) 18 Continued on next page... 64

65 Elect Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Cr Ni Mo Cu Preheat: The recommended preheat temperature for 9CrMo steels is F depending on thickness. Post weld heat treatment is generally required. Standard Diameters 3/32" (2.4 mm), 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm), 7/32" (5.6 mm), 1/4" (6.4 mm) Packaged in Tear Strip Cans Recommended Welding Parameters page 80 65

66 Elect Atom AWS Class E10018-M AC-DCEP ( Positive) Imprint Marking: M Code and Specification Data: AWS A5.5, ASME SFA 5.5 Description: Atom electrodes are used primarily for applications which require weld joints of at least 100 ksi (690 MPa) tensile strength, good ductility and crack resistance. Good notch toughness at temperartures as low as -60 F (-51 C) is possible with this electrode. Atom can be used to weld HY-80 and T-1 steel. Typical Mechanical Properties As Welded Yield Strength, psi (MPa) 99,000 (683) Tensile Strength, psi (MPa) 108,000 (745) % Elongation in 2" (51 mm) 24 % Reduction of Area 64 Continued on next page... 66

67 Elect Typical Charpy V-Notch Impact Properties As Welded Testing Temp. ft.-lbs. (J) -40 F (-40 C) 46 (62) -60 F (-51 C) 28 (38) Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Ni Mo Preheat: Preheat should be used on hardenable steels to prevent the formation of a hard heat-affected zone. Preheat may also be required in welding heavy sections. Standard Diameters 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm), 7/32" (5.6 mm), 1/4" (6.4 mm) Packaged in Tear Strip Cans Additional Atom listed on page 78 67

68 Elect High Strength Atom T AWS Class E11018-M AC-DCEP ( Positive) Imprint Marking: M Code and Specification Data: AWS A5.1, ASME SFA 5.1 ABS - AWS A5.5 Military - MIL-E /1, MIL M Description: Atom T was developed for welding T-1 steel in all applications. Mechanical properties of the welded joints equal or exceed the properties of the base steel in either the as welded or stress relieved condition, thus giving 100% design joint efficiency. In addition, Atom T electrodes are suitable for many other applications, particularly where high-strength welds with excellent low temperature impact properties are required. Typical Mechanical Properties Stress Relieved 1 hr. As F (552 C) Yield Strength, psi (MPa) 104,800 (723) 102,400 (707) Tensile Strength, psi (MPa) 115,000 (793) 112,000 (773) % Elongation in 2" (51 mm) % Reduction in Area Continued on next page... 68

69 Elect Typical Charpy V-Notch Impact Properties Stress Relieved 1 hr. As F (552 C) Testing Temp. ft.-lbs. (J) ft.-lbs. (J) 0 F (-18 C) 55 (75) 50 (68) -40 F (-40 C) 48 (65) 42 (57) -60 F (-51 C) 44 (60) 25 (34) Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Cr Ni Mo Preheat: The manufacturers of the trade name steels publish preheat requirements for the various thicknesses in which the steels are supplied. Under conditions of extreme cold, it is always advisable to warm the base metal to about 60 F (16 C) in the immediate area of the joint before welding. When extreme ductility of the weld area is required with high-tensile steels or when welding heavy sections, the use of low temperature preheat is recommended. When Atom T is used to weld other steels, the requirements for preheat are controlled by the hardening characteristics and thickness of the material being welded. Standard Diameters 3/32" (2.4 mm), 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm), 7/32" (5.6 mm), 1/4" (6.4 mm) Packaged in Tear Strip Cans 69

70 Elect Atom AWS Class E12018-M AC-DCEP ( Positive) Imprint Marking: M Code and Specification Data: AWS A5.5, ASME SFA 5.5 Description: Atom is recommended for use in fabrication of low-alloy, high-tensile steels where welds of 120 ksi (828 MPa) minimum tensile strength are required. Atom is typically used to weld forgings, castings, plate and pressure vessels. Typical Mechanical Properties As Welded Yield Strength, psi (MPa) 120,500 (831) Tensile Strength, psi (MPa) 133,400 (920) % Elongation in 2" (51 mm) 18 % Reduction of Area 56 Typical Charpy V-Notch Impact Properties As Welded Testing Temp. ft.-lbs. (J) -60 F (-51 C) 26 (35) Continued on next page... 70

71 Elect Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Cr Ni Mo Preheat: Preheat should be used on hardenable steels to prevent the formation of a hard heat-affected zone. Preheat may also be required in welding heavy sections. Standard Diameters 3/32" (2.4 mm), 1/8" (3.2 mm), 5/32" (4.0 mm), 3/16" (4.8 mm), 7/32" (5.6 mm), 1/4" (6.4 mm) Packaged in Tear Strip Cans Recommended Welding Parameters page 80 Additional Atom listed on page 78 71

72 Elect Special Purpose Atom 8018-W AWS Class E8018-W2 AC-DCEP ( Positive) Imprint Marking: 8018-W Code and Specification Data: AWS A5.5, ASME SFA 5.5 CWB-CSA W48.3, E55018-W Description: Atom 8018-W electrodes are designed specifically for welding the low-alloy, high-strength weathering steels, such as A588, A242, Cor-Ten, and Mayari R. The uniform color blend of weld deposit with weathered steel makes these electrodes an excellent choice when architectural appearance is important. Typical Mechanical Properties As Welded Yield Strength, psi (MPa) 83,400 (575) Tensile Strength, psi (MPa) 92,900 (641) % Elongation in 2" (51 mm) 27 Continued on next page... 72

73 Elect Typical Charpy V-Notch Impact Properties As Welded Testing Temp. ft.-lbs. (J) 0 F (-18 C) 90 (122) Typical Undiluted Weld Metal Analysis (%) C Mn Si P S Cr Ni Cu Preheat: Preheat should be used on hardenable steels to prevent the formation of a hard heat-affected zone. Preheat may also be required in welding heavy sections. Standard Diameters 1/8" (3.2 mm), 5/32" (4.0 mm) Packaged in Tear Strip Cans Recommended Welding Parameters page 80 73