ASTM A333 Gr.6 for HP Steam
ASTM A333 Gr.6 for HP Steam
(OP)
Hi,
I have a Piping material specification for a project. There is one piping material class (16") for the low temperature service but the same material is also used for the HP steam.The material is ASTM A333 Gr. 6.
Can somebody clarify how can we use the same material for low temp. service as well as for the HP steam.
I have a Piping material specification for a project. There is one piping material class (16") for the low temperature service but the same material is also used for the HP steam.The material is ASTM A333 Gr. 6.
Can somebody clarify how can we use the same material for low temp. service as well as for the HP steam.
RE: ASTM A333 Gr.6 for HP Steam
It seems to be a typing mistake.
Normally, carbon steel is not used for HP Steam piping. ASTM A335 Gr P22 is generally used.
Regards.
DHURJATI SEN
Kolkata, India
RE: ASTM A333 Gr.6 for HP Steam
Depends on your definition of high pressure. I do not agree.
Review a copy of the ASTM A-333 Gr 6 specification. Compare the allowable stresses in ASME II part D across the temperature spectrum with other common carbon steel piping grades like ASTM A-106-B. I've seen projects use ASTM A-333 Gr 6 (impact tested carbon steel) in applications that were not low temperature. Those who work in the project world may be better able to explain why.
RE: ASTM A333 Gr.6 for HP Steam
We currently use A106B (which essentially is the same as A333-6) for piping design of the HP steam system in one of the demo plants were building, if I’m not mistaken it’s around 45 barg @ 260 deg C.
RE: ASTM A333 Gr.6 for HP Steam