what is the diffrence between material SA-516-GRADE 60 AND GRADE 70
what is the diffrence between material SA-516-GRADE 60 AND GRADE 70
(OP)
what is the diffrence between material SA-516-GRADE 60 AND GRADE 70
can i use material 516 gr 70 instead of GR 60?
can i use material 516 gr 70 instead of GR 60?





RE: what is the diffrence between material SA-516-GRADE 60 AND GRADE 70
The choice to substitute 516/70 for 516/60 depends on the application, WPS to be used, etc.
More information needed.
RE: what is the diffrence between material SA-516-GRADE 60 AND GRADE 70
SA-516-60 is a nominally weaker material, but it comes with the benefit of typically being 'softer', which lends itself to certain applications. For sour service for example, hardness is an important variable in the design. By specifying SA-516-60, you are typically lowering the material hardness, making it less susceptible to sour service attack.
If your customer has specified SA-516-60, you need to understand why. If the vessel is in sour service, you may have a hard time convincing them to accept a substitution.
RE: what is the diffrence between material SA-516-GRADE 60 AND GRADE 70
Refer to the A516 or the SA 516 specifications for exact requirements.
RE: what is the diffrence between material SA-516-GRADE 60 AND GRADE 70
RE: what is the diffrence between material SA-516-GRADE 60 AND GRADE 70
RE: what is the diffrence between material SA-516-GRADE 60 AND GRADE 70
Not really. Almost all of the SA-516 is triple certified and it doesn't really matter. The HAZ of lower carbon equivalent Gr 60 (if it actually has a lower carbon equivalent) will generally have superior toughness and will be better able to meet hardness limitations in SCC service w/o PWHT.
RE: what is the diffrence between material SA-516-GRADE 60 AND GRADE 70