ISO 4957 Grade S 18-1-2-5 quenched (+Q)

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Description

Tough high alloyed W-Co high speed steel with high hot hardness. Application: turning, planing and blow tools, scrub cutter

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

8.12 g/cm³

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Mechanical

PropertyTemperatureValueComment

Elastic modulus

20.0 °C

224 GPa

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100.0 °C

220 GPa

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200.0 °C

214 GPa

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300.0 °C

207 GPa

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400.0 °C

199 GPa

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500.0 °C

191 GPa

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600.0 °C

180 GPa

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Poisson's ratio

20.0 °C

0.28 [-]

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Shear modulus

23.0 °C

79 GPa

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Typical for Tool And Machining Steel

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

-100.0 °C

9.6E-6 1/K

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20.0 °C

1.05E-5 1/K

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100.0 °C

1.11E-5 1/K

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200.0 °C

1.16E-5 1/K

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300.0 °C

1.2E-5 1/K

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400.0 °C

1.24E-5 1/K

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500.0 °C

1.27E-5 1/K

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600.0 °C

1.3E-5 1/K

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Melting point

1370 - 1425 °C

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Typical for Tool And Machining Steel

Specific heat capacity

23.0 °C

420 - 460 J/(kg·K)

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Typical for Tool And Machining Steel

Thermal conductivity

20.0 °C

27.6 W/(m·K)

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100.0 °C

27.9 W/(m·K)

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200.0 °C

27.7 W/(m·K)

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300.0 °C

27.5 W/(m·K)

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400.0 °C

27 W/(m·K)

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500.0 °C

26.6 W/(m·K)

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600.0 °C

26.1 W/(m·K)

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Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

5.24E-7 Ω·m

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100.0 °C

5.81E-7 Ω·m

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200.0 °C

6.64E-7 Ω·m

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300.0 °C

7.51E-7 Ω·m

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400.0 °C

8.44E-7 Ω·m

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500.0 °C

9.41E-7 Ω·m

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600.0 °C

1.04E-6 Ω·m

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Chemical properties

PropertyValue

Carbon

0.75 - 0.83 %

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Chromium

3.8 - 4.5 %

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Cobalt

4.5 - 5 %

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Manganese

0.4 %

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Molybdenum

0.5 - 0.8 %

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Phosphorus

0.03 %

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Silicon

0.45 %

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Sulfur

0.03 %

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Tungsten

17.5 - 18.5 %

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Vanadium

1.4 - 1.7 %

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