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ASTM A705 XM-12 Age-Hardened H1025 Stainless Steel – Specifications & Properties

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	14 - 20 J
Elastic modulus	23.0 °C	220 GPa	Typical for Martensitic Stainless Steel
Elongation A50	23.0 °C	8 - 12 %
Hardness, Brinell	23.0 °C	331 [-]
Hardness, Rockwell C	23.0 °C	35 [-]
Poisson's ratio	23.0 °C	0.3 [-]	Typical for Martensitic Stainless Steel
Reduction of area	23.0 °C	27 - 45 %
Shear modulus	23.0 °C	77 GPa	Typical for Martensitic Stainless Steel
Tensile strength	23.0 °C	1070 MPa
Yield strength	23.0 °C	1000 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 A453 Grade 651 Class A Stainless Steel – Comprehensive Specifications & Performance ASTM A705 Grade XM-12 (Age-Hardening H1075) – Premium Martensitic Stainless Steel Properties

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