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A537 Class 3 steel Plate

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Product: Hot rolled heat-treated carbon-manganese-silicon steel plates intended for fusion welded pressure vessel and structures.
A537 Class 3 steel product available : A537 Class 3 Steel plates, A537 Class 3 steel sheets,
A537 Class 3 steel standard :ASTM A537/A537M
ASTM A537/A537M specification includes the grades : A537 Class 1, A537 Class 2, A537 Class 3
A537 Class 3 delivery condition: N(Normalized), Q&T(quenched and tempered)

A537 Class 3 pressure vessel steel chemical composition %

Grade Thickness C max Mn P max S max Si Cu max Ni max Cr max Mo max
A537 Class 3 t≤40 0.24 0.70-1.35 0.025 0.025 0.15-0.50 0.35 0.25 0.25 0.08
40﹤t 1.00-1.60

A537 Class 3 pressure vessel steel Mechanical properties
Class Thickness Heat treatment Tensile strength Rm MPa Yield strength ReH MPa min Elongation A% min
A537 Class 3 Class 3 t≤65 Q&T 550-690 345 22
65﹤t≤100 515-655 310 20
100﹤t≤150 485-620 275 -


JOIN-WIN STEEL keeps enough quantity A537 Class 3 steel in stock each month. We can meet our customer’s further process request like : cutting ( any size and any shape ) drilling, welding, milling, machining and steel structure.

Other grades of steel plates for pressure vessel and boiler equipment in standard ASTM A537/A537M and ASME SA537/SA537M:
A537 Class 1 pressure vessel steel plates,
A537 Class 2 pressure vessel steel plates,
SA537 Class 1 pressure vessel steel plates,
SA537 Class 2 pressure vessel steel plates,
SA537 Class 3 pressure vessel steel plates

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