Grades : SS 304, 304L, 304H, 316, 316L, 316LN, 316Ti, 309, 310S, 317L, 321, 347,

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Phyllis Miller
5 years ago
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1 Unifit MetalloysInc (UMI) is one of the leading Manufacturer, Exporter and Supplier of High Quality Stainless Steel Pipes & Tubes, Flanges, Pipe Fittings, Round Bars, Sheets and Plates Etc.Stainless steel is a corrosion resistant steel alloy with a minimum of 10% chromium. There are different grades and surface finishes of stainless steel produced to accommodate the environment in which the material will be implemented. Unlike carbon steel, stainless steel does not rust when exposed to air and moisture due to the sufficient amount of chromium present. The chromium creates an invisible passive film of chromium oxide that will not let oxygen attack the surface and prevents rusting of the iron base Ferritic Stainless Steels Chromium is their major alloying element Ductility and formability less than austenitic grades Magnetic Highly corrosion resistant, less durable than austenitic Cannot be hardened by heat treatment Contain between 10.5%27% chromium and very little nickel Common grades: part of the 400 series like 409, 410S, 430 Austenitic Stainless Steels Comprise of 70% of total stainless steel production Hardenable by cold working Usually nonmagnetic High hardness and yield strength Contain a maximum of 0.015% carbon, minimum of 16% chromium and sufficient nickel and/or manganese Superaustenitic stainless steels (AL6XN and 254 SMO) have great resistance to chloride pitting and crevice corrosion Common grades: 300 series like 304, 316, 320, 321, 347,309 Martensitic Stainless Steels Highly machinable Very strong and tough Can be hardened by heat treatment Magnetic Contains chromium (1214%), molybdenum (0.21%), nickel, (0 < 2%), carbon (0.1 < 1%) Common grades: 410, 420, 440 s : SS 304, 304L, 304H, 316, 316L, 316LN, 316Ti, 309, 310S, 317L, 321, 347,

2 409, 410, 420, 430, 446, 202, 904L, 174 PH, 155 PH, Duplex 31803/ 32205, Super Duplex 32750/32760 Specification : Pipes Specifications Sheets/Plates Specification Round bar Specification : ASTM A/ASME SA213/A249/A269/A312/ASTM A789/A790 : ASTM A240 / ASME SA240 : ASTM, ASME, AISI A 276, SA 276, A 479, SA 479 Buttweld and Forged : ASTM A182, ASME SA182/ ASTM A403, ASME SA403 Fittings Specification Flanges Specification : ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44 Fasteners Specification Dimensions : ASTM / ASME A/SA 193 / 194 : ASTM, ASME and API Size Range Available Pipes & Tubes : 1/2" NB 16" NB ERW Pipes & Tubes : 1/2" NB 24" NB EFW Pipes & Tubes : 6" NB 100" NB Sheets and Pates Round Bar Flanges Forged Fittings Buttweld Fittings Fasteners Schedule : 4.0mm 100mm : 3.17 MM TO 350 MM DIA : 1/2" NB TO 48" NB : 1/8" NB TO 4" NB. : 1/2" NB TO 48" NB. : M02 to M33 : SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120,

3 SCH140, SCH160, XXS Class : 2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS, 150#, 300#, 400#, 600#, 900#, 1500# & 2500# Length End : Single Random, Double Random & Cut Length. : Plain End, Beveled End, Treaded Finish : Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated), Bright, Polish & Black Form : Round, Square, Rectangular, Hydraulic, Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange), Round, Square, Hex (A/F), Rectangle, Wire (Coil Form), Wiremesh, Billet, Ingot, Forging, Socketweld Fittings, Threaded Fittings, Specialized in : Large Diameter Pipes, Shim Sheet, Perforated Sheet, B. Q. Profile, Flanges, Pipe Fittings, Outlets Fasteners etc. Chemical Composition : C Mn Si P S Cr Mo Ni N 304 min max C Mn Si P S Cr Mo Ni N 304L min max C Mn Si P S Cr Mo Ni N 310 min max

4 C Mn Si P S Cr Mo Ni N 310S min max C Mn Si P S Cr Mo Ni N 316 min max C Mn Si P S Cr Mo Ni N 316L min max C Mn Si P S Cr Mo Ni N 316TI Min max C Mn Si P S Cr Mo Ni N max 2 max 1 max max 0.03 max C Mn Si P S Cr Mo Ni N 317L max 2 max 1 max max 0.03 max C Mn Si P S Cr N Ni TI 321 Min (C+N)

5 max max C Mn Si P S Cr N Ni TI Min (C+N) 321H max max C Mn Si P S Cr N Ni OTHER 347 Min Nb=10(C +N) max C Mn Si P S Cr MO Ni N 410 Min 11.5 max C Mn Si P S Cr MO Ni CU 904L Min max Mechanical properties Proof

6 Proof 304L Proof % Proof 316L % Proof Proof 310S

7 Proof 316H % Proof % Proof 321H % Proof % Yield Strength 0.2% Proof (HR B) (HB) 904L typical Rockwell value range is typical only; other values are specified limits.

8 Stainless Steel 317 Density Melting Point 8.0 g/cm C (2650 F) Psi 75000, MPa 515 Yield Strength (0.2%Offset) Psi 30000, MPa 205 Elongation 35 % Stainless Steel 317L Density Melting Point 8.0 g/cm C (2650 F) Psi 75000, MPa 515 Yield Strength (0.2%Offset) Psi 30000, MPa 205 Elongation 35 % specifications UNS No Old British Euronorm BS En No Name Swedish SS Japanese JIS 304 S S31 58E X5CrNi SUS L S S X2CrNi SUS 304L 316 S S31 58H, 58J X5CrNiMo SUS L S31603 S X5CrNiMo SUS 316L 310 S S X15CrNi2520 SUH S S S X8CrNi2521 SUS 310S

9 321 S S31 58B, 58C X6CrNiTi SUS H S S X6CrNiTi1810 SUS 321H 347 S s31 58G X6CrNiNb SUS L N S X1NiCrMoCuN S S21 56A X12Cr SUS 410 SS 316TI S31635 SUS 316Ti Z6CNDT S31 08Ch17N13M2T X6CrNiMoTi17 12

ATLAS TECH NOTE No. 3

ATLAS TECH NOTE No. 3 revised June 2012 STAINLESS STEELS PROPERTIES AND EQUIVALENT GRADES Type Austenitic Ferritic Duplex Martensitic P.H Comparison of Grade Specifications of Stainless Steels Grade UNS