Grade A250 Grade T12
Corresponding Standard ASTM A250/A250M-2005(R2014)
Electric-Resistance-Welded Ferritic Alloy-Steel Boiler and Superheater Tubes
Classification Alloy Steel
A250 Grade T12 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Mo
Minimum Value 0.05 - 0.3 - - 0.8 0.44
Maximum Value 0.15 0.5 0.61 0.03 0.02 1.25 0.65
A250 Grade T12 Mechanical Properties
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
≥415 ≥220 ≥30

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