ASTM A387 Grade 5 Class 2/A387GR5CL2 vessel plates boiler steel sheets are alloy chromium molybdenum pressure vessel steel plates. The ASTM A387 Grade 5 Class 2/A387GR5CL2 steel is designed for use in boilers, pressure vessels and heat exchangers at high temperatures.
ASTM A387 Grade 5 Class 2/A387GR5CL2 vessel plates boiler steel sheets chemical composition:
| C % | Mn % | P % | S % | SI % | Cr % | Mo % |
| 0.15 | 0.25-0.66 | 0.035 | 0.030 | 0.55 | 3.90-6.10 | 0.40-0.70 |
ASTM A387 Grade 5 Class 2/A387GR5CL2 vessel plates boiler steel sheets mechanical property:
| Tensile Strength(MPa) | Yield Strength(MPa) min | % Elongation in 2 in.(50mm) min | Impacting Test Temperature(°C) |
| 515-690 | 310 | 45 | -20,40,-60 |
The Added molybdenum gives ASTM A387 Grade 5 Class 2/A387GR5CL2 vessel plates boiler steel sheets greater temperature tensile strength and the chromium provides A387 Grade 5 Class 2/A387GR5CL2 steel improved corrosion resistance. Therefore, ASTM A387 Grade 5 Class 2/A387GR5CL2 vessel plates boiler steel sheets are very popular on the market.
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