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JIS G4311 SUH4 Grade: Quenched & Tempered Martensitic Stainless Steel

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
Elastic modulus	23.0 °C	220 GPa	Typical for Martensitic Stainless Steel
Elongation A5	23.0 °C	10 %
Hardness, Brinell	23.0 °C	262 [-]
Impact strength, Charpy notched	20.0 °C	10 kJ/m²
Poisson's ratio	23.0 °C	0.3 [-]	Typical for Martensitic Stainless Steel
Reduction of area	23.0 °C	15 %
Shear modulus	23.0 °C	77 GPa	Typical for Martensitic Stainless Steel
Tensile strength	23.0 °C	880 MPa
Yield strength Rp0.2	23.0 °C	685 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

Technological properties

Property
Processing history	quenched and tempered

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