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ASTM A213 Grade T122 Heat‑Treated Stainless Steel: Key Properties and Applications

Properties

General

Property	Temperature	Value	Comment
Density	23.0 °C	7.6 - 7.8 g/cm³	Typical for Ferritic Stainless Steel

Mechanical

Property	Temperature	Value	Comment
Elastic modulus	23.0 °C	220 GPa	Typical for Ferritic Stainless Steel
Elongation A50	23.0 °C	20 %
Hardness, Brinell	23.0 °C	250 [-]
Hardness, Rockwell C	23.0 °C	25 [-]
Hardness, Vickers	23.0 °C	265 [-]
Poisson's ratio	23.0 °C	0.3 [-]	Typical for Ferritic Stainless Steel
Shear modulus	23.0 °C	77 GPa	Typical for Ferritic Stainless Steel
Tensile strength	23.0 °C	620 MPa
Yield strength	23.0 °C	400 MPa

Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion	23.0 °C	9.3E-6 - 1.2E-5 1/K	Typical for Ferritic Stainless Steel
Melting point		1425 - 1530 °C	Typical for Ferritic Stainless Steel
Specific heat capacity	23.0 °C	420 - 586 J/(kg·K)	Typical for Ferritic Stainless Steel
Thermal conductivity	23.0 °C	11 - 22 W/(m·K)	Typical for Ferritic Stainless Steel

Electrical

Property	Temperature	Value	Comment
Electrical resistivity	23.0 °C	6E-7 - 7.5E-7 Ω·m	Typical for Ferritic Stainless Steel

Chemical properties

Property	Value
Aluminium	0.02 %
Boron	5E-4 - 5E-3 %
Carbon	0.07 - 0.14 %
Chromium	10 - 11.5 %
Manganese	0.7 %
Molybdenum	0.25 - 0.6 %
Nickel	0.5 %
Niobium	0.04 - 0.1 %
Nitrogen	0.04 - 0.1 %
Phosphorus	0.02 %
Silicon	0.5 %
Sulfur	0.01 %
Tungsten	1.5 - 2.5 %
Vanadium	0.15 - 0.3 %

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