The “P” indicates that it is a pressure vessel steel grade, while “265” refers to the minimum yield strength of the material (265 MPa). “GH” indicates that the material is suitable for elevated temperature service.
P265GH
The “P” indicates that it is a pressure vessel steel grade, while “265” refers to the minimum yield strength of the material (265 MPa). “GH” indicates that the material is suitable for elevated temperature service.