Grade SA-213 Grade T91 Type1
K90901
Other Names
Corresponding Standard ASME SA-213/SA-213M-2019
Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler,Superheater, and Heat-Exchanger Tubes
Classification Alloy Steel
SA-213 Grade T91 Type1 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo N Ti V Nb Zr Al
Minimum Value 0.07 0.2 0.3 - - 8 - 0.85 0.03 - 0.18 0.06 - -
Maximum Value 0.14 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-213 Grade T91 Type1 Mechanical Properties
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Hardness
HBW
≥585 ≥415 ≥20 190~250

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