EN 1562 Grade GJMW-350-4 decarburized annealed

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Material EN-GJMW-350-4 (former GTW-35-04 acc. to DIN 1692-82) is a white malleable cast iron which is used in electrical engineering for electric fittings and contact line components for rail vehicles, in machine engineering for roll carrier, roller suspension tracks as well as for fabric downholder for textile machines, for axle sleeves and nuts of agricultural machines, in construction trade for couplings in scaffolding, as wood connectors for roof framings, for components in scaffolding and concrete formwork as well as for water barriers and toggle nuts. Further application for hose couplings, gas meter fittings, hose clips for compressed air lines, de-aerator casings, for fittings as well as for steering units and fork heads for bicycles.

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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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20.0 °C

7.3 - 7.8 g/cm³

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Elastic modulus

20.0 °C

175 - 195 GPa

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Hardness, Brinell

20.0 °C

230 [-]

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Poisson's ratio

23.0 °C

0.27 [-]

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Typical for Malleable Cast Iron

Shear modulus

23.0 °C

64 GPa

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Typical for Malleable Cast Iron

Tensile strength

20.0 °C

270 - 360 MPa

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Coefficient of thermal expansion

23.0 °C

1E-5 - 1.4E-5 1/K

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Typical for Malleable Cast Iron

Melting point

1120 °C

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Typical for Cast Iron

Specific heat capacity

20.0 °C

460 - 500 J/(kg·K)

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Thermal conductivity

20.0 °C

42 - 63 W/(m·K)

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Electrical resistivity

20.0 °C

3E-7 - 4E-7 Ω·m

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Chemical properties



3 - 3.4 %

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0.4 - 0.6 %

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0.4 - 0.8 %

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0.12 - 0.25 %

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