Giovanni,
Joey is correct here.
JIS SS400 has not been assigned a P number by ASME so it is classed as an unassigned material.
A WPS/PQR for A 36 cannot be used even if the mechanical properties of JIS SS400 are far greater than the A 36 (which they aren't as I am working with that steel now in Thailand)
Unless, as Jeff pointed out - the customer is willing to accept the substitution.
Regards,
Shane
What I was trying to do was to check the chemical composition and mechanical properties of SS400 steel, to see whether it was really equivalent to A36, because, from Boon's first posting, I had the impression (right or wrong) that he wasn't sure of the equivalence.
Some other answers were posted later that confirmed the equivalence, but because I had promised Boon that I was going to look at the JIS manual, I wanted to keep my promise.
As a matter of fact, I was more concerned with the SA400 equivalence than with the need of a new WPS and PQR.
Giovanni S. Crisi