SA737 GrB steel plate is a low-alloy high-strength plate for pressure vessels, and the minimum yield strength of SA737 GrB is 345Mpa.
SA737 GrB steel plate executive standard: SA737/SA737M, which belongs to ASME internal standard. Equivalent to ASTM A737/A737M.
Chemical composition of SA737 GrB steel plate (wt%):
| C | Si | Mn | P | S | Nb |
| ≤0.2 | 0.15-0.5 | 1.15-1.5 | ≤0.025 | ≤0.025 | ≤0.05 |
Mechanical properties of SA737 GrB steel plate:
| Re(MPa) | ≥345 | |
| Rm(MPa) | 485～620 | |
| A200(%) | ≥18 | A50≥23% |
| Delivery Status | normalized + tempered | |
Application of SA737 GrB steel plate:
SA737 Grade B steel plates are widely used in petroleum, chemical, power station, boiler and other industries, for making reactors, heat exchangers, separators, spherical tanks, gasless tanks, liquefied gas tanks, nuclear power reactor pressure shells, boiler steam equipment and components such as bags, liquefied petroleum gas cylinders, high-pressure water pipes of hydropower stations, and turbine volutes.
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