AISI 4140 Forged

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Equivalent Materials

This material data has been provided by Songshun Steel.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

Ashby charts

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Properties

General

PropertyTemperatureValue

Density

23.0 °C

7.8 g/cm³

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Dimension

PropertyValueComment

Diameter

20 - 800 mm

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Length

2000 - 5800 mm

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Thickness

800 mm

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max.

Width

205 - 800 mm

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Mechanical

PropertyTemperatureValueComment

Elastic modulus

23.0 °C

200 - 210 GPa

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Typical for Steels

Elongation

23.0 °C

12 %

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Hardness, Brinell

23.0 °C

217 [-]

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Poisson's ratio

23.0 °C

0.29 [-]

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Typical for Steels

Tensile strength

23.0 °C

1080 MPa

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Yield strength

23.0 °C

550 MPa

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Thermal

PropertyTemperatureValue

Coefficient of thermal expansion

23.0 °C

1.22E-5 1/K

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Thermal conductivity

23.0 °C

42.6 W/(m·K)

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Chemical properties

PropertyValue

Carbon

0.4 - 0.45 %

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Chromium

0.8 - 1.1 %

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Iron

Balance

Manganese

0.75 - 1 %

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Molybdenum

0.15 - 0.25 %

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Phosphorus

0.04 %

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Silicon

0.15 - 0.35 %

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Sulfur

0.04 %

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