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EN 1561 Grade GJL-250 Cast – Key Properties & Applications

EN-GJL-250 is used for cast parts for general mechanical engineering, e.g. shipbuilding, machine-tools, textile machines, electrotechnical engineering, apparatus engineering, farm machines, household machines, car engineering, pumps, turbine casings, fittings.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.2 g/cm³

Mechanical

PropertyTemperatureValueComment

Compressive yield strength

20.0 °C

752 - 1054 MPa

Compressive yield strength, 0.1%

20.0 °C

325 MPa

Elastic modulus

20.0 °C

103 - 118 GPa

Elongation

20.0 °C

0.3 - 0.8 %

Flexural strength

20.0 °C

415 - 581 MPa

Plane-Strain Fracture Toughnes

20.0 °C

20 MPa·√m

Poisson's ratio

20.0 °C

0.24 - 0.26 [-]

Shear modulus

23.0 °C

41 GPa

Typical for Cast Iron

Shear strength

20.0 °C

290 MPa

Tensile strength

20.0 °C

200 - 350 MPa

100.0 °C

250 MPa

200.0 °C

230 MPa

300.0 °C

240 MPa

400.0 °C

250 MPa

500.0 °C

200 MPa

600.0 °C

130 MPa

Torsion Strength

20.0 °C

340 - 581 MPa

Yield strength Rp0.1

20.0 °C

165 - 228 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

-100.0 °C

1E-5 1/K

100.0 °C

1.05E-5 1/K

200.0 °C

1.17E-5 1/K

300.0 °C

1.2E-5 1/K

400.0 °C

1.3E-5 1/K

500.0 °C

1.3E-5 1/K

600.0 °C

1.3E-5 1/K

Melting point

1127 - 1204 °C

Typical for Grey Cast Iron

Specific heat capacity

200.0 °C

460 J/(kg·K)

600.0 °C

535 J/(kg·K)

Thermal conductivity

20.0 °C

50 W/(m·K)

100.0 °C

48.5 W/(m·K)

200.0 °C

47.5 W/(m·K)

300.0 °C

46.5 W/(m·K)

400.0 °C

45 W/(m·K)

500.0 °C

44.5 W/(m·K)

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

7.3E-7 - 8E-7 Ω·m

Technological properties

Property
Processing methods

sand casting


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