AISI 4140 Forged

Equivalent material: DIN 1.7225, JIS SCM440, DIN 42CrMo, SAE 4140

AISI 4140 Forged general

Property Temperature Value
Density 23.0 °C Density of 7.8 g/cm³

AISI 4140 Forged thermal

Property Temperature Value Comment
Elastic modulus 23.0 °C Elastic modulus of 200 - 210 GPa Typical for Steels
Elongation 23.0 °C Elongation of 12 % -
Hardness, Brinell 23.0 °C Hardness, Brinell of 217 [-] -
Poisson's ratio 23.0 °C Poisson's ratio of 0.29 [-] Typical for Steels
Tensile strength 23.0 °C Tensile strength of 1080 MPa -
Yield strength 23.0 °C Yield strength of 550 MPa -

AISI 4140 Forged chemical

Property Value
Carbon Carbon of 0.4 - 0.45 %
Chromium Chromium of 0.8 - 1.1 %
Iron Balance
Manganese Manganese of 0.75 - 1 %
Molybdenum Molybdenum of 0.15 - 0.25 %
Phosphorus Phosphorus of 0.04 %
Silicon Silicon of 0.15 - 0.35 %
Sulfur Sulfur of 0.04 %

AISI 4140 Forged electrical

Property Temperature Value
Coefficient of thermal expansion 23.0 °C Coefficient of thermal expansion of 1.22E-5 1/K
Thermal conductivity 23.0 °C Thermal conductivity of 42.6 W/(m·K)

AISI 4140 Forged mechanical

Property Value Comment
Diameter Diameter of 20 - 800 mm -
Length Length of 2000 - 5800 mm -
Thickness Thickness of 800 mm max.
Width Width of 205 - 800 mm -

Push the boundaries of innovation with our versatile range of steel solutions.

-- Our promise

Similar or equivalent steel materials

Get a quote