EN 10089 Grade 38Si7 quenched and tempered (+QT)

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Description

The steel 38Si7 is used for spring rings, spring plates, screw locks and load securing devices.

Related Standards

Equivalent Materials

This material data has been provided by WIAM.

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.

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Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.78 - 7.85 g/cm³

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Mechanical

PropertyTemperatureValueComment

Elastic modulus

-100.0 °C

217 GPa

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20.0 °C

210 - 212 GPa

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100.0 °C

206 - 207 GPa

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200.0 °C

195 - 199 GPa

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300.0 °C

185 - 192 GPa

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400.0 °C

184 GPa

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500.0 °C

175 GPa

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600.0 °C

164 GPa

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Elongation

20.0 °C

8 %

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Poisson's ratio

23.0 °C

0.3 [-]

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Typical for Steel

Reduction of area

20.0 °C

35 %

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Shear modulus

20.0 °C

80 GPa

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Tensile strength

20.0 °C

1300 - 1600 MPa

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Yield strength Rp0.2

20.0 °C

1150 MPa

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Thermal

PropertyTemperatureValue

Coefficient of thermal expansion

-100.0 °C

1.05E-5 1/K

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20.0 °C

1.15E-5 1/K

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100.0 °C

1.21E-5 1/K

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200.0 °C

1.27E-5 1/K

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300.0 °C

1.32E-5 1/K

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400.0 °C

1.36E-5 1/K

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500.0 °C

1.4E-5 1/K

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600.0 °C

1.44E-5 1/K

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Specific heat capacity

20.0 °C

461 J/(kg·K)

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100.0 °C

479 J/(kg·K)

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200.0 °C

499 J/(kg·K)

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300.0 °C

517 J/(kg·K)

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400.0 °C

536 J/(kg·K)

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500.0 °C

558 J/(kg·K)

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600.0 °C

587 J/(kg·K)

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Thermal conductivity

20.0 °C

34.1 W/(m·K)

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100.0 °C

35.2 W/(m·K)

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200.0 °C

36.5 W/(m·K)

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300.0 °C

36.7 W/(m·K)

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400.0 °C

35.8 W/(m·K)

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500.0 °C

34.5 W/(m·K)

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600.0 °C

32.9 W/(m·K)

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Thermal diffusivity

20.0 °C

9.5 mm²/s

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100.0 °C

9.2 mm²/s

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200.0 °C

8.9 mm²/s

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300.0 °C

8.3 mm²/s

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400.0 °C

7.7 mm²/s

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500.0 °C

6.7 mm²/s

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600.0 °C

5.6 mm²/s

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Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

3.05E-7 Ω·m

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100.0 °C

3.64E-7 Ω·m

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200.0 °C

4.32E-7 Ω·m

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300.0 °C

5.12E-7 Ω·m

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400.0 °C

6.07E-7 Ω·m

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500.0 °C

7.16E-7 Ω·m

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600.0 °C

8.42E-7 Ω·m

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Chemical properties

PropertyValue

Carbon

0.35 - 0.42 %

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Manganese

0.5 - 0.8 %

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Phosphorus

0.03 %

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Silicon

1.5 - 1.8 %

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Sulfur

0.025 %

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Technological properties

Property
Features

Spring