Is killed carbon steel HIC resistant
Is killed carbon steel HIC resistant
(OP)
Hi folks,
Please help on the following question.
is killed carbon steel HIC resistant? and I heard SA106 Gr.B pipes are suitable for wet H2S service lines, why don't we use SA53 Gr.B Pipes?
Please help on the following question.
is killed carbon steel HIC resistant? and I heard SA106 Gr.B pipes are suitable for wet H2S service lines, why don't we use SA53 Gr.B Pipes?





RE: Is killed carbon steel HIC resistant
RE: Is killed carbon steel HIC resistant
No, unless it is specified to be HIC resistant.
RE: Is killed carbon steel HIC resistant
Deoxidation
Vacuum degassing
Fine grain practice so that ASTM grain size = "x" or smaller
Trace chemistry
Alloying elements
Method of manufacture
etc.
But the "acid test" (pardon the expression) is whether or not unacceptable cracks develop in prepared specimens after continuous exposure to one of two standard acid solutions (see NACE Tm 0284). I believe that most producers and metallurgists have their own variations regarding what defines acceptable versus rejectable, but one common generally accepted measure is based on criteria published by Prudential Steel. Namely, PS-10 and PS-50 levels of HIC - resistance.
Beware of the term "HIC Resistant". All it really means is that the steel's manufacture has been controlled in such a way as to be consistent with that for other steels that have subsequently demonstrated acceptable levels of crack development after a HIC test. It does not mean that the steel would actually be guaranteed to pass a test if you were to impose it.