ASTM A537A537M A537 Class 1 steel grade,A537 Class 1 carbon steel plates
The ASTM A537 specification is the Standard Specification for Pressure Vessel Plates, Heat-Treated, Carbon-Manganese-Silicon Steel used in the applications of fusion welded pressure vessels and structures. Typical applications are pressure vessels designed for moderate and lower-temperature service requiring excellent notch toughness as well as API 650 and API 620 storage tanks. Class 1 material is available as Normalized and Class 2 is available as Quenched & Tempered plates.
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A537 CLASS 1 Adopt standard: ASTM SA537 Standard Specification for High-Strength Low-Alloy Columbium-Vanadium Structural Steel
A537 CLASS 1 Specification: Thickness: 1mm to 200mm; Width: 1500mm to 3500mm: Length: 3000mm to 27000mm
Third Party Inspection for A537 CLASS 1: ABS, DNV, BV, GL, CCS, LR, RINA, KR, NK, CE, SGS, IKE, IEI or other quality department.
ASTM A537A537M ASTM A537 CLASS 1 Chemical composition% of the Product analysis of grade:


C %

Si %

Mn %

P %

S %

V %


Cr %

A537 CLASS 1









Cu %

Mo %

Nb %

Ni %

Ti %












ASTM A537A537M ASTM A537 CLASS 1 Mechanical Property:



Min Yield



Min Impact Energy

A537 CLASS 1


345 Mpa

485-620 Mpa





310 Mpa

450-585 Mpa










Normally ASTM A537 CLASS 1 plates are normally supplied in the as-rolled condition. The plates may be ordered normalized or stress relieved, or both.
ASTM A537 CLASS 1 steel plates shall be normalized. SA537CL2 and SA537Cl3 plates shall be quenched and tempered. The tempering temperature for Cl2 plates shall not be less than 1100°F [595°C] for not less than 1⁄2 h and 1150°F [620°C] for Class 3 plates for not less than 1⁄2 h.
A537 CLASS 1 Delivery Time Or Lead Time: 15-30days
A537 CLASS 1 Extra Service:Pretreatment (Shot Blasting, Sand Blast, Painting and Galvanized), Cutting Parts, Sample Service, Third Party inspection, UT Test and Size inspection.
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