ASTM A-27 GR 70
ASTM A-27 GR 70
(OP)
I am working on a vessel with a body flange material of ASTM A-27 GR 70. Can anyone give me the yield and tensile stress values and also the allowable stress at 70 deg. F?
Thanks in advance.
esce
Thanks in advance.
esce
ESCE, Inc.
http://esce.freeservers.com





RE: ASTM A-27 GR 70
RE: ASTM A-27 GR 70
The client wants to know what is the mawp if designed per ASME Div. 1.
I need the yield and tensile stress values and also the allowable stress of a similar Code material if this material is not listed.
ESCE, Inc.
http://esce.freeservers.com
RE: ASTM A-27 GR 70
without allowable stress tables at temperatures, I would be very hesitant to furnish a MAWP for an unknown material on a part that is 45 years old with who knows wat defects in the casting.
RE: ASTM A-27 GR 70
There are two Grades 70-36, 70-40.
The 70 refers to min UTS
The 36 or 40 refers to min YS.
RE: ASTM A-27 GR 70
Could he hydro (proof test) the pressure head using a 36,000 yield strength psi; then - if its passes the hydro - accept a MAWP based on that 36,000?