P355NH - Equivalent forging material?
P355NH - Equivalent forging material?
(OP)
Hi, I just want ask which EN forged material is considered the equivalent of P355NH, is it P305GH?
The issue is that we are buying Tube Sheets designed in accordance with EN 13445, but the designer specified WSTE 355 in forging material. From my searchings P355NH is stated to be equivalent, however that is in plate and we need forged material.
The issue is that we are buying Tube Sheets designed in accordance with EN 13445, but the designer specified WSTE 355 in forging material. From my searchings P355NH is stated to be equivalent, however that is in plate and we need forged material.





RE: P355NH - Equivalent forging material?
You need to make sure that your selection still meets the specified properties for originally-specified WSTE 355.
Aaron Tanzer
www.lehightesting.com
RE: P355NH - Equivalent forging material?
CobusvanJ,
Grade P355NH (1.0565) also appears in EN 10222-4 [I]Steel forgings for pressure purposes — Part 4: Weldable fine-grain steels with high proof strength[I]. P305GH (1.0436) is specified in EN 10222-2, and is a little lower in strength.
RE: P355NH - Equivalent forging material?
EN 13445-2 : Unfired pressure vessels - Part 2: Materials