EN 10277-3 Grade 35S20 cold drawn

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Description

The free cutting case hardening steel 35S20 is used for bulk parts of mean strength, especially if ductility demands in transversal direction are as high as for usual C-steels (e.g. C35). Cutting speed is increased but higher cracking risk according to rising C-content has to be considered. Application in car industry, apparatus, equipment and machine engineering (e.g. screws, nuts, small-size parts). As a bright steel product it is used in the form of bars, bright, straight, in various conditions (see DIN EN 10277 : 1999-10).

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

PropertyValueTemperature

Density

7.8 - 7.85 g/cm³

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20.0 °C

Mechanical

PropertyValueTemperature

Elastic modulus

217 GPa

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-100.0 °C

210 - 212 GPa

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20.0 °C

207 GPa

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100.0 °C

193 - 199 GPa

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200.0 °C

185 - 192 GPa

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300.0 °C

175 - 184 GPa

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400.0 °C

175 GPa

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500.0 °C

164 GPa

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600.0 °C

Elongation

6 - 9 %

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20.0 °C

Poisson's ratio

0.28 [-]

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20.0 °C

Shear modulus

81 GPa

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20.0 °C

Tensile strength

510 - 880 MPa

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20.0 °C

Yield strength Rp0.2

300 - 480 MPa

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20.0 °C

Thermal

PropertyValueTemperatureComment

Coefficient of thermal expansion

1.08E-5 1/K

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-100.0 °C

1.19E-5 1/K

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20.0 °C

1.1E-5 - 1.25E-5 1/K

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100.0 °C

1.18E-5 - 1.3E-5 1/K

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200.0 °C

1.36E-5 1/K

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300.0 °C

1.32E-5 - 1.41E-5 1/K

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400.0 °C

1.45E-5 1/K

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500.0 °C

1.49E-5 1/K

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600.0 °C

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Max service temperature

500 °C

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Typical for Carbon Steel

Melting point

1380 - 1514 °C

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Typical for Medium Carbon Steel

Specific heat capacity

423 J/(kg·K)

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-100.0 °C

420 - 461 J/(kg·K)

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20.0 °C

479 - 490 J/(kg·K)

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100.0 °C

499 - 530 J/(kg·K)

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200.0 °C

517 J/(kg·K)

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300.0 °C

536 - 610 J/(kg·K)

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400.0 °C

558 J/(kg·K)

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500.0 °C

587 J/(kg·K)

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600.0 °C

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Thermal conductivity

44.9 - 49 W/(m·K)

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20.0 °C

46.2 W/(m·K)

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100.0 °C

45.5 W/(m·K)

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200.0 °C

43.1 W/(m·K)

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300.0 °C

40.4 W/(m·K)

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400.0 °C

37.7 W/(m·K)

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500.0 °C

34.9 W/(m·K)

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600.0 °C

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Thermal diffusivity

12.5 mm²/s

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20.0 °C

12 mm²/s

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100.0 °C

11 mm²/s

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200.0 °C

9.8 mm²/s

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300.0 °C

8.6 mm²/s

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400.0 °C

7.3 mm²/s

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500.0 °C

5.9 mm²/s

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600.0 °C

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Electrical

PropertyValueTemperature

Electrical resistivity

1.2E-7 - 2.32E-7 Ω·m

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20.0 °C

2.77E-7 Ω·m

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100.0 °C

3.47E-7 Ω·m

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200.0 °C

4.35E-7 Ω·m

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300.0 °C

5.38E-7 Ω·m

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400.0 °C

6.56E-7 Ω·m

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500.0 °C

7.95E-7 Ω·m

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600.0 °C

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Chemical properties

Property

Carbon

0.32 - 0.39 %

Manganese

0.7 - 1.1 %

Phosphorus

0.06 %

Silicon

0.4 %

Sulfur

0.15 - 0.25 %