DIN 1691 Grade GG-25

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GG-25, for castings in general machine construction, including ship building, for tool machines, machines in textile and electronic industry, apparatus engineering, agricultural machinery, household machines, writing and calculating machines, construction of vehicles, for pumps, turbine case, armatures. The material is comparable to F 12801 (see to material 40 B, ASTM A 48) and/or US with US F 12803 (see to material 40 B, ASTM A 278 and ASME SA 278) of the USA.

Related Standards

This material data has been provided by WIAM.

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
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

7.2 g/cm³

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Elastic modulus

20.0 °C

103 - 118 GPa

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Hardness, Brinell

20.0 °C

250 - 285 [-]

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Plane-Strain Fracture Toughnes

20.0 °C

15.2 MPa·√m

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Poisson's ratio

20.0 °C

0.26 [-]

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Shear modulus

23.0 °C

41 GPa

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Typical for Cast Iron

Tensile strength

20.0 °C

155 - 350 MPa

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Melting point

1120 °C

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Typical for Cast Iron

Specific heat capacity

200.0 °C

460 J/(kg·K)

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600.0 °C

535 J/(kg·K)

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Thermal conductivity

23.0 °C

55 W/(m·K)

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Typical for Cast Iron



Electrical resistivity

20.0 °C

7.3E-7 Ω·m

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