ASTM A335 ASME SA335 P91 Seamless Ferritic Alloy-Steel ...
2021-9-7u2002·u2002ASTM A335 P91 Seamless Ferritic Alloy-Steel Pipes cover nominal (average) wall seamless alloy-steel pipe intended for high-temperature service. ASTM A335 P91 steel When V, Nb and other alloy elements are added into the original 9Cr-1Mo martensitic steel, the allowable stress at 550-650 ℃ is significantly higher than that of 10CrMo910 and ...
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