ASTM A106 Gr.B vs A333 Gr.6 Stress Curves
ASTM A106 Gr.B vs A333 Gr.6 Stress Curves
(OP)
I have a question about stress curves.
After doing some research I've found elaborate curves of A106 Gr.B in the API 530 about the rupture stresses but for the life of me, I can't find any data about A333 Gr.6. I don't think I can assume equivalence between the two since A333 Gr.6 is for preferred for low temperature service.
The problem is this: We have materials from both specs, only the first was required yet both are delivered. I want to know if A333 Gr.6 is capable of performing at elevated temperatures (> 400°C).
My preference is 'NO', but... I need sound information that it can or can't be used.
Any help would be amazing! Thanks in advance!
After doing some research I've found elaborate curves of A106 Gr.B in the API 530 about the rupture stresses but for the life of me, I can't find any data about A333 Gr.6. I don't think I can assume equivalence between the two since A333 Gr.6 is for preferred for low temperature service.
The problem is this: We have materials from both specs, only the first was required yet both are delivered. I want to know if A333 Gr.6 is capable of performing at elevated temperatures (> 400°C).
My preference is 'NO', but... I need sound information that it can or can't be used.
Any help would be amazing! Thanks in advance!





RE: ASTM A106 Gr.B vs A333 Gr.6 Stress Curves
RE: ASTM A106 Gr.B vs A333 Gr.6 Stress Curves
I've searched for A333 Gr.6 and found that Table 2A gives the service limit at 371°C. I've found additional information from other codes (Dutch Rules for Pressure Vessels) that restrict the services up to 350°C. Which is the same for A106 Grade B (slightly different in DRPV).
Thanks again!!!!
RE: ASTM A106 Gr.B vs A333 Gr.6 Stress Curves
RE: ASTM A106 Gr.B vs A333 Gr.6 Stress Curves
RE: ASTM A106 Gr.B vs A333 Gr.6 Stress Curves
With DRPV, do you mean RToD? Please note that the chemical composition of A106-B may be different to the Dutch equivalent, hence not hold the same properties.