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ASTM A554 Grade MT317: Key Properties & Performance

Properties

General

Property	Temperature	Value	Comment
Density	23.0 °C	7.9 - 8.2 g/cm³	Typical for Austenitic Stainless Steel

Mechanical

Property	Temperature	Value	Comment
Elastic modulus	23.0 °C	195 GPa	Typical for Austenitic Stainless Steel
Elongation A50	23.0 °C	35 %
Hardness, Brinell	23.0 °C	192 [-]
Hardness, Rockwell B	23.0 °C	90 [-]
Poisson's ratio	23.0 °C	0.3 [-]	Typical for Austenitic Stainless Steel
Shear modulus	23.0 °C	77 GPa	Typical for Austenitic Stainless Steel
Tensile strength	23.0 °C	517 MPa
Yield strength	23.0 °C	207 MPa

Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion	23.0 °C	1.7E-5 - 1.9E-5 1/K	Typical for Austenitic Stainless Steel
Melting point		1230 - 1480 °C	Typical for Austenitic Stainless Steel
Specific heat capacity	23.0 °C	440 J/(kg·K)	Typical for Austenitic Stainless Steel
Thermal conductivity	23.0 °C	11 - 21 W/(m·K)	Typical for Austenitic Stainless Steel

Electrical

Property	Temperature	Value	Comment
Electrical resistivity	23.0 °C	8.5E-7 Ω·m	Typical for Austenitic Stainless Steel

Chemical properties

Property	Value
Carbon	0.08 %
Chromium	18 - 20 %
Manganese	2 %
Molybdenum	3 - 4 %
Nickel	11 - 14 %
Phosphorus	0.05 %
Silicon	1 %
Sulfur	0.03 %

ASTM A511 Grade MT446-2 Annealed – High‑Performance Ferritic Stainless Steel ASTM A554 Grade MT321: Specifications & Properties of Austenitic Stainless Steel

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