SA-437/SA-437M
SA-437/SA-437M (Specification for stainless and alloy-steel turbine-type bolting specially heat treated for high-temperature service)· ASME (United States) · 3 materials
| Designation | Alternative designation | Material group | |
|---|---|---|---|
| SA-437 Grade B4B | 12Cr-1Mo-V-W | Stainless steels | chevron_right |
| SA-437 Grade B4C | 12Cr-1Mo-V-W | Stainless steels | chevron_right |
| SA-437 Grade B4D | Structural and constructional steels | chevron_right |