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SA-285-Gr C can resist for 300¦C of service?

SA-285-Gr C can resist for 300¦C of service?

SA-285-Gr C can resist for 300¦C of service?

(OP)
Hi everybody!

I´m designing about a vent pipe made of plates and the materials are SA-285 Gr. C., but the conditions are less than 10 psig of pressure (I´m talking about natural gas) and a temperature of 300°C at most. I´m searching for ASME code that I can show that SA-285 Gr C is able to work without problems (I have already seen Max Stress at 500-600°F and it is of 15.3 KSI) what do you think?

PLEASE TAKE INTO ACCOUNT THAT OTHER DIFFERENT MATERIAL THAN SA 285 C IS NOT ACCEPTABLE.

THKS.

RE: SA-285-Gr C can resist for 300¦C of service?

You've already found the correct answer [almost].  285-C is good for 13.8 KSI at 600 deg F / 315 deg C in ASME calc's.  It is rated 15.3 KSI for API calc's.  Use Sect VIII or B31.3 formula [and you'll find out that Bending Stress governs].   

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