Valve Material requirement of carbon steel, austenitic stainless steel, duplex stainless steel, 17/4 PH stainless steel, soft seat and seal material (Part 1)- Executed project-SGPK03
1.Carbon Steel and Impact Tested Carbon Steel
The chemical composition of carbon steel castings and forgings shall be limited as follows:
Carbon content 0.22% max
Carbon equivalent 0.43% max by ladle analysis where :
CEV = C + Mn/6 + (Cr+Mo+V)/5 +(Cu + Ni)/15
NACE MR0175 specified material shall also have limitations on chemical composition as follows :