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SA645 Grade A steel Plate

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Product: Hot rolled specially heat treated 5% Nickel alloy steel plates intended primarily for welded pressure vessels for service at low or cryogenic temperatures.
SA645 Grade A steel product available : SA645 Grade A Steel plates, SA645 Grade A steel sheets,
SA645 Grade A steel standard :ASME SA645/SA645M
ASME SA645/SA645M specification includes the grades : SA645 Grade A, SA645 Grade B
SA645 Grade A delivery condition: T(Tempered), Q(Quenched), Q&T (Quenched and Tempered)

SA645 Grade A pressure vessel steel chemical composition %

Grade C max Mn P max S max Si Ni Cr Mo Al Nb max
SA645 Grade A 0.13 0.30-0.60 0.025 0.025 0.20-0.40 4.8-5.2 - 0.20-0.35 0.02-0.12 0.02

SA645 Grade A pressure vessel steel Mechanical properties
Class Tensile strength Rm MPa Yield strength ReH MPa min Elongation A% min in 50mm Impact test temperature
SA645 Grade A 655-795 450 20 -140 ℃


JOIN-WIN STEEL keeps enough quantity SA645 Grade A 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 pressure vessel steel grades in standard ASTM A645/A645M and ASME SA645/SA645M
A645 Grade A pressure vessel steel plates,
A645 Grade B pressure vessel steel plates,
SA645 Grade B pressure vessel steel plates

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