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ASTM A479 Grade 439 Annealed: Premium Ferritic Stainless Steel Properties

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	192 [-]
Poisson's ratio	23.0 °C	0.3 [-]	Typical for Ferritic Stainless Steel
Reduction of area	23.0 °C	45 %
Shear modulus	23.0 °C	77 GPa	Typical for Ferritic Stainless Steel
Tensile strength	23.0 °C	485 MPa
Yield strength Rp0.2	23.0 °C	275 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
Carbon	0.07 %
Chromium	17 - 19 %
Manganese	1 %
Nickel	0.5 %
Nitrogen	0.04 %
Phosphorus	0.04 %
Silicon	1 %
Sulfur	0.03 %

ASTM A479 Grade 431 Tempered Stainless Steel – High-Performance Martensitic Steel ASTM A479 Grade XM-30 Annealed – High-Performance Martensitic Stainless Steel

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