ASTM A829 Grade 4140 As-Rolled, Annealed, Normalized, Normalized and Tempered, or Quenched and Tempered; Tensile strength range 100 MPa
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ASTM A829 Grade 4140 As-Rolled, Annealed, Normalized, Normalized and Tempered, or Quenched and Tempered; Tensile strength range 100 MPa

Equivalent material: UNS G41400

ASTM A829 Grade 4140 As-Rolled, Annealed, Normalized, Normalized and Tempered, or Quenched and Tempered; Tensile strength range 100 MPa general

Property Value Comment
Density Density of 7.8 - 7.9 g/cm³ Typical for Chromium Molybdenum Steel

ASTM A829 Grade 4140 As-Rolled, Annealed, Normalized, Normalized and Tempered, or Quenched and Tempered; Tensile strength range 100 MPa thermal

Property Value Comment
Coefficient of thermal expansion Coefficient of thermal expansion of 1.1e-05 - 1.4e-05 1/K Typical for Chromium Molybdenum Steel
Melting point Melting point of 1382 - 1529 °C Typical for Chromium Molybdenum Steel
Specific heat capacity Specific heat capacity of 448 - 502 J/(kg·K) Typical for Chromium Molybdenum Steel
Thermal conductivity Thermal conductivity of 36 - 43 W/(m·K) Typical for Chromium Molybdenum Steel

ASTM A829 Grade 4140 As-Rolled, Annealed, Normalized, Normalized and Tempered, or Quenched and Tempered; Tensile strength range 100 MPa chemical

Property Value Condition Related Standards Shape
Carbon Carbon of 0.36 - 0.44 % As-Rolled, Annealed, Normalized, Normalized and Tempered, or Quenched and Tempered; Tensile strength range 100 MPa ASTM A829 Plate
Chromium Chromium of 0.8 - 1.1 % As-Rolled, Annealed, Normalized, Normalized and Tempered, or Quenched and Tempered; Tensile strength range 100 MPa ASTM A829 Plate
Manganese Manganese of 0.75 - 1 % As-Rolled, Annealed, Normalized, Normalized and Tempered, or Quenched and Tempered; Tensile strength range 100 MPa ASTM A829 Plate
Molybdenum Molybdenum of 0.15 - 0.25 % As-Rolled, Annealed, Normalized, Normalized and Tempered, or Quenched and Tempered; Tensile strength range 100 MPa ASTM A829 Plate
Phosphorus Phosphorus of 0.03 % As-Rolled, Annealed, Normalized, Normalized and Tempered, or Quenched and Tempered; Tensile strength range 100 MPa ASTM A829 Plate
Silicon Silicon of 0.15 - 0.35 % As-Rolled, Annealed, Normalized, Normalized and Tempered, or Quenched and Tempered; Tensile strength range 100 MPa ASTM A829 Plate
Sulfur Sulfur of 0.04 % As-Rolled, Annealed, Normalized, Normalized and Tempered, or Quenched and Tempered; Tensile strength range 100 MPa ASTM A829 Plate

ASTM A829 Grade 4140 As-Rolled, Annealed, Normalized, Normalized and Tempered, or Quenched and Tempered; Tensile strength range 100 MPa electrical

Property Value Comment
Electrical conductivity Electrical conductivity of 4 S/m Predicted Value
Electrical resistivity Electrical resistivity of 35 Ω·m Predicted Value

ASTM A829 Grade 4140 As-Rolled, Annealed, Normalized, Normalized and Tempered, or Quenched and Tempered; Tensile strength range 100 MPa mechanical

Property Value Condition Related Standards Shape Comment
Elastic modulus Elastic modulus of 200 - 215 GPa - - - Typical for Chromium Molybdenum Steel
Elongation Elongation of 15.2 % - - - Predicted Value, Transverse
- Elongation of 16.6 % - - - Predicted Value, A200
- Elongation of 18.1 % - - - Predicted Value, A80
- Elongation of 18.4 % - - - Predicted Value, A5
- Elongation of 19.0 % - - - Predicted Value, A80 Transverse
- Elongation of 20.1 % - - - Predicted Value, A50
- Elongation of 20.7 % - - - Predicted Value
Poisson's ratio Poisson's ratio of 0.29 [-] - - - Typical for Chromium Molybdenum Steel
Reduction of area Reduction of area of 41.7 % - - - Predicted Value, Transverse
- Reduction of area of 42.9 % - - - Predicted Value
Shear modulus Shear modulus of 79.6 GPa - - - Predicted Value
Shear strength Shear strength of 514.4 MPa - - - Predicted Value
Tensile strength Tensile strength of 480 MPa As-Rolled, Annealed, Normalized, Normalized and Tempered, or Quenched and Tempered; Tensile strength range 100 MPa ASTM A829 Plate -

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