ASTM A335/ASME SA335 Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service

Chemical Composition of ASTM A335 P91 Alloy Steel Pipes

C % Mn % P % S % Si % Cr % Mo % V % N % Ni % Al % Nb %
0.08-0.12 0.3-0.6 0.02 max 0.01 max 0.2-0.5 8.0-9.5 0.85-1.05 0.18-0.25 0.03-0.07 0.4 max 0.04 max 0.06-0.10 max

 

Mechanical Properties of ASTM A335 P91 Alloy Steel Pipes

Tensile Strength, Mpa Yield Strength, MPa Elongation, % Hardness, HB
585 min 415 min 20 min 250 max