Grade SA-335 Grade P91
K91560
Other Names
Corresponding Standard ASME SA-335/SA-335M-2021
Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
Classification Alloy Steel
SA-335 Grade P91 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo N Ti V Nb Zr Al
Minimum Value 0.08 0.2 0.3 - - 8 - 0.85 0.03 - 0.18 0.06 - -
Maximum Value 0.12 0.5 0.6 0.02 0.01 9.5 0.4 1.05 0.07 0.01 0.25 0.1 0.01 0.02
SA-335 Grade P91 Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Quenching + Tempering ≥585 ≥415 ≥20

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