Jiangsu SA335P91 spot P91 seamless pipe P91 alloy pipe P91 boiler pipe manufacturer SA335P91 steel pipe spot SA335P91 chemical composition
Chemical composition confirmation of P91 steel, chemical composition of P91 steel
Wuxi Haoyi spot P91 steel pipe
Composition wt% C 0.08 ~ 0.12 Mn 0.30 ~ 0.60 Si 0.20 ~ 0.50 P ≤ 0.02 s ≤ 0.01 CR 8.0 ~ 9.5 Mo 0.85 ~ 1.05 V 0.18 ~ 0.25 NB 0.06 ~ 0.1 N 0.03 ~ 0.07 al ≤ 0.04 Ni ≤ 0.4
P91 alloy pipe standard: ASTM A213 ASTM A335 tensile strength: ≥ 585 (MPA) yield strength: ≥ 415 (MPA) elongation: ≥ 20 (%). The spot specification of Haoyi alloy P91 is complete and can be printed with spectrum
Features of P91 alloy pipe: it has not only high oxidation resistance and high temperature steam corrosion resistance, but also good impact toughness, high and stable durable plasticity and thermal strength. When the service temperature is lower than 620 ℃, the allowable stress is higher than that of austenitic stainless steel. Above 550 ℃, the recommended design allowable stress is about twice that of T9 and 2.25Cr-1Mo steel.
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