The temper prvided is not so atypical for P5. however, it may produce a hardness that will be detrimental to your pipes\'s longterm life in your slurry service.
What were the mechanical properties stated on the MTR and did you ask for a minimum hardness?
RE: Tempering issue - - Pipe Size 4”, Sch-120, ASTM A 335 Gr P5
I would take 750C as the max temp. Time matters too. If it was 1 hour, for OD 4'' pipe is fine. if 4hour or longer, you may need to worry about the extra carbides that can decrease impact, and strength. b.t.w, a min of 675C is to get rid of any possible martensite.
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RE: Tempering issue - - Pipe Size 4”, Sch-120, ASTM A 335 Gr P5
What were the mechanical properties stated on the MTR and did you ask for a minimum hardness?
RE: Tempering issue - - Pipe Size 4”, Sch-120, ASTM A 335 Gr P5