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ASTM A705 Grade XM-12 Age-Hardening Stainless Steel H1150 – Properties & Performance

Properties

General

Property	Temperature	Value	Comment
Density	23.0 °C	7.6 - 7.7 g/cm³	Typical for Martensitic Stainless Steel

Mechanical

Property	Temperature	Value	Comment
Charpy impact energy	23.0 °C	27 - 41 J
Elastic modulus	23.0 °C	220 GPa	Typical for Martensitic Stainless Steel
Elongation A50	23.0 °C	11 - 16 %
Hardness, Brinell	23.0 °C	277 [-]
Hardness, Rockwell C	23.0 °C	28 [-]
Poisson's ratio	23.0 °C	0.3 [-]	Typical for Martensitic Stainless Steel
Reduction of area	23.0 °C	30 - 50 %
Shear modulus	23.0 °C	77 GPa	Typical for Martensitic Stainless Steel
Tensile strength	23.0 °C	930 MPa
Yield strength	23.0 °C	725 MPa

Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion	23.0 °C	1E-5 - 1.5E-5 1/K	Typical for Martensitic Stainless Steel
Melting point		1370 - 1530 °C	Typical for Martensitic Stainless Steel
Specific heat capacity	23.0 °C	460 J/(kg·K)	Typical for Martensitic Stainless Steel
Thermal conductivity	23.0 °C	14 - 31 W/(m·K)	Typical for Martensitic Stainless Steel

Electrical

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

Chemical properties

Property	Value
Carbon	0.07 %
Chromium	14 - 15.5 %
Copper	2.5 - 4.5 %
Manganese	1 %
Nickel	3.5 - 5.5 %
Phosphorus	0.04 %
Silicon	1 %
Sulfur	0.03 %

ASTM A705 Grade XM-12 H1100 Steel: Key Properties & Performance ASTM A705 Grade XM-12 Age-Hardening H1150M – High-Performance Martensitic Stainless Steel

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