DIN 17442 Grade G-X20CrMo13 quenched and tempered (+QT)

DIN 17442 Grade G-X20CrMo13 quenched and tempered (+QT) introduction

G-X 20 CrMo 13, for medical instruments, components of turbines, parts in superheated steam valves, for temperatures up to 500 °C.

Equivalent material: DIN 1.4120, JIS SCS4, EN X20CrMo13, EN 1.4120, ASTM Grade CF-3M

Property	Temperature	Value
Density	20.0 °C	Density of 7.7 g/cm³

Property	Temperature	Value	Comment
Coefficient of thermal expansion	100.0 °C	Coefficient of thermal expansion of 1.05E-5 1/K	-
-	200.0 °C	Coefficient of thermal expansion of 1.1E-5 1/K	-
-	300.0 °C	Coefficient of thermal expansion of 1.1E-5 1/K	-
-	400.0 °C	Coefficient of thermal expansion of 1.15E-5 1/K	-
-	500.0 °C	Coefficient of thermal expansion of 1.2E-5 1/K	-
Max service temperature, long	-	Max service temperature, long of 0 - 500 °C	-
Melting point	-	Melting point of 1370 - 1530 °C	Typical for Martensitic Stainless Steel
Specific heat capacity	20.0 °C	Specific heat capacity of 460 J/(kg·K)	-
Thermal conductivity	20.0 °C	Thermal conductivity of 29 W/(m·K)	-

Property	Temperature	Value
Electrical resistivity	20.0 °C	Electrical resistivity of 5.5E-7 Ω·m

Property	Temperature	Value	Comment
Elastic modulus	23.0 °C	Elastic modulus of 220 GPa	Typical for Martensitic Stainless Steel
Elongation	20.0 °C	Elongation of 12 %	-
Hardness, Brinell	20.0 °C	Hardness, Brinell of 170 - 240 [-]	-
Poisson's ratio	23.0 °C	Poisson's ratio of 0.3 [-]	Typical for Martensitic Stainless Steel
Shear modulus	23.0 °C	Shear modulus of 77 GPa	Typical for Martensitic Stainless Steel
Tensile strength	20.0 °C	Tensile strength of 590 - 790 MPa	-
Yield strength Rp0.2	20.0 °C	Yield strength Rp0.2 of 440 MPa	-

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