SA 105 1

[ird192]

I'm looking at at section VIII vessel built in 1972 , shell and heads SA516-70 , they used a LWN 18" manway using SA-105 II anybody tell me what this is in current context

 

[0707]

ASME SA-105 Grade II steel,is used in high-pressure hydrogen compressor systems, is similar to steels used or considered for use in high-pressure hydrogen storage vessels and pipelines.

 

[Christine74]

It's the equivalent of standard SA-105 material today.

SA-105 Gr I was a lower strength grade of SA-105 with a tensile strength of 60 ksi that was discontinued in the 1970s, and SA-105 Gr. II was the higher strength (70 ksi) grade.


-Christine