ASTM A515 Grade 60/A515 Gr.60 vessel plates boiler steel sheets are primarily for intermediate and higher temperature service in welded boilers and other pressure vessels projects. When the thickness of ASTM A515 Grade 60/A515 Gr.60 vessel plates boiler steel sheets is not thicker than 50mm, the A515 Grade 60 plates are usually supplied in the as-rolled condition. Normalizing is also Ok if the customer has special requirement. If the thicknesses of A515 Grade 60/A515 Gr.60 vessel plates is above 50mm, the plates shall be normalized.
ASTM A515 Grade 60/A515 Gr.60 vessel plates boiler steel sheets chemical composition:
| C max | Mn max | Simax | Pmax | Smax |
| 0.24-0.31 | 0.98 | 0.13-0.45 | 0.035 | 0.035 |
ASTM A515 Grade 60/A515 Gr.60 vessel plates boiler steel sheets mechanical property:
| Tensile Strength(MPa) | Yield Strength(MPa) min. | % Elongation in 2 in.(50mm) min | Impacting Test Temperature(°C) |
| 415-550 | 220 | 25 | -20,40,-60 |
For the thickness limitation of ASTM A515 Grade 60/A515 Gr.60 vessel plates boiler steel sheets, it is up to the capacity of the composition to meet the specified mechanical property requirements. So it is distinct in different mills. BBN steel limits the maximum thickness of A515 Grade 60/A515 Gr.60 vessel plates at 300mm.
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