Applicable Standards The following list contains specification references for products we can offer Applicable Standards describe specification requirements our suppliers can meet Other Reference Standards are included for your reference Applicable Standards Other Reference Standards Quality designations ASTM A591 JIS G3313 Chemical composition ASTM A591 Mechanical properties ASTM A591 JIS G3313 DIN17163 Coating weights & thickness ASTM A591 JIS G3313 DIN17163 Thickness tolerances ASTM A591 JIS G3313 Width tolerances Length tolerances JIS G3313 JIS G3313 ASTM A 591 (Steel Sheet, Electrolytic ZincCoated, for Light Coating Mass Applications) Quality Designations Commercial Quality (CQ) sheet: steel sheet intended for applications where material is subjected to bending or moderate forming Drawing Quality (DQ) sheet: steel sheet intended for fabricating identified parts where drawing or severe forming may be involved Drawing Quality Special Killed(DQSK) sheet: steel manufactured from specially produced or selected killed steels (normally aluminum killed) specially processed to have good uniform drawing properties for use in fabricating an identified part having extremely severe deformations and to be essentially free from aging Structural (Physical) Quality (SQ) sheet: steel sheet intended for applications where mechanical properties are specified or required Such properties or values include those indicated by tension, hardness, or other commonly accepted mechanical tests (Care should be taken to ensure that the grade
designation us compatible with the application) Highstrength, lowalloy (HSLA) quality sheet: steel sheet of high strength steels which have better formability when compared to structural quality sheet Coating Class Coating Weight Minimum Check Limit Coating Total, Both Sides Class Triple Spot Single Spot oz/ft² g/m² oz/ft² g/m² A B C No minimum required 8 16 No minimum required 24 48 No minimum required 7 15 No minimum required 22 45 Chemical Requirements Element Carbon Manganese Phosphorus Sulfur Commercial Quality 15 6 35 4 Composition (%), max Drawing Quality (Special Killed) 1 5 25 35 Thickness Tolerances Specified Specified Minimum Thickness, in
Width, in From 14 to Over 19 to Over 39 to Over 57 to 19 incl 39 incl 57 incl 98 incl Up to 6 4 6 8 1 Specified Width, in From 4 to 5 incl Specified Minimum Thickness, in Over 5 to 1 Over 1 to 15 Over 15 to 25 incl incl incl Up to 15 1 15 2 25 DIN 17163 Grades and Mechanical Properties Steel Grade Type of Minimum Deoxidation Yield Tensile Elongation and Minimum Maximum Bend Strength Strength after Symbol Material Chemical Cupping Hardness Test Number (N/mm²) (N/mm²) Fracture Composition (%) as in 27 to St 12 RR St 13 St 14 133 1347 1338 DIN 1623 Part 1 max28 max24 max21 41 27 to 37 27 to 28 34 38 As in DIN 1623 Part 1 As in DIN 1623 Part 1 35 As in St 37 3G 1116G DIN 1623 Part 2 min215 36 to 51 2 DIN 1623 Part 2 Z StE 26 to 35 to 26 148 34 45 24 As in Z StE 1489 SEW 93 3 to 38 to 22 SEW 3 1548 38 48 2 93 Z StE 34 to 41 to
34 44 53 Thickness and Mass of Coating Type of Zinc Coating Designation Nominal Coating Thickness, S, per Surface, (µm) Nominal Coating Mass per Unit Area, GA, per Surface, (g/m²) Minimum Coating Mass per Unit Area, per Surface, (g/m²) ZE 1/1 Thin coating 1/1 7/7 4/4 ZE 25/25 Normal coating 25/25 18/18 12/12 ZE 5/5 ZE 75/75 Thick coating 5/5 75/75 36/36 54/54 28/28 47/47 ZE 25/ 25/ 18/ 12/ ZE 5/ ZE 75/ Onesided coating 5/ 75/ 36/ 54/ 28/ 47/ ZE 1/ 1/ 72/ 65/ ZE 525 5/25 36/18 28/12 ZE 75/25 Differential coating 75/25 54/18 47/12 ZE 75/5 75/5 54/36 47/28 JIS G3313 Grades Symbol Thickness (mm) Base Metal Quality SECC SPCC Commercial SECD 4~32 SPCD Drawing SECE SPCE Deep Drawing
34 SPFC34 High Strength Steel for 37 SPFC37 Deep Drawing 39 SPFC39 44 49 54 6~23 SPFC44 SPFC49 SPFC54 High Strength Steel for Drawing 59 SPFC59 49Y SPFC49Y 54Y 6~16 SPFC54Y 59Y SPFC59Y Low Yield Ratio Type 78Y 98Y 8~14 SPFC78Y SPFC98Y 34H 6~16 SPFC34H Bake Hardening Type Coating Weights Symbol Minimum Coating Weight of Zinc(Onesided) g/m² In Case of Equal In Case of Differential Thickness Coating Coating Standard Coating Weight of Zinc(Onesided) g/m² EB 25 3 E8 85 8 1 E16 17 16 2 E24 255 24 3 E32 34 32 4 E4 425 4 5 Mechanical Properties
Elongation (%) Yield Tensile Thickness (mm) Symbo Strength l (N/mm² ) min Strength (N/mm² ) min 4 to 6excl 6 to 1excl 1, to 16excl 16 to 23excl 23 to 25excl 25 and ove r Test Piece SECC (27) (34) (36) (37) (38) (38) (39) No5 SECD 27 36 38 39 4 4 41 SECE 27 38 4 41 42 42 43 Rolling Direction 34 37 39 44 49 54 59 49Y 54Y 59Y 78Y 98Y 175 34 34 35 35 25 37 32 33 33 235 39 3 31 31 265 44 26 27 27 295 49 23 24 24 325 54 2 21 21 355 59 17 18 18 225 49 24 25 25 245 54 21 22 22 265 59 18 19 19 365 78 13 14 14 49 98 6 7 7 No5 Perpendicula r Rolling Direction 185 34 34 35 35
34H Thickness Tolerances (Base metal: Coldrolled sheet) Thickness Width Under 63 63 and over to 1, excl 1 and over to 125, excl 125 and over to 16, excl 16 and over 4 and over to 6,excl 6 and over to 8,excl 8 and over to 1,excl 1 and over to 125,excl 125 and over to 16,excl 16 and over to 2,excl 2 and over to 25,excl 25 and over to 315,excl ±5 ±5 ±5 ±6 ±6 ±6 ±6 ±6 ±7 ±6 ±6 ±7 ±8 ±9 ±7 ±7 ±8 ±9 ±11 ±8 ±9 ±1 ±11 ±13 ±1 ±11 ±12 ±13 ±15 ±12 ±13 ±14 ±15 ±17 ±14 ±15 ±16 ±17 ±2 315 and over ±16 ±17 ±19 ±2 Width Tolerances
Width Base Metal Coldrolled Sheet used as Base Metal Under 125 125 and over +7 +1 Length Tolerances Length Base Metal Coldrolled Sheet used as Base Metal Under 2 2 and over to 4,excl 4 and over to 6,excl +1 +15 +2 Top