The material meets 15156-2 A.2 for regions 0-3. Basically 4140 75k yeild, etc. I knew about figure 1, but I wasn;t sure if there were any other restrictions like there are for stainless.
NACE MR0175 gives partial H2S limits on Stainless Steels,(i.e. 17-4 0,5psi) but is there anything that denotes a partial H2S limits for carbon steels? We use API6A DD & EE material classifications on H2S equipment, but I would like to add the H2S partial pressures to it.
