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DIN 17465: GX40CrNiSi25-20 Cast Steel – Optimal for High-Heat Oven Components

G-X 40 CrNiSi 25 20, for parts of ovens with highest mechanical loadings, previously loaded to high heat resistance, like transport elements in oven for annealing, tempering, sheet normalising and throughput, this are for example rolls, bearing arbor, bearing grate, bolts, anchor, lever, oven plates, burner, chains, snail retorts, transport rolls. Furthermore for insert boxes, annealing boxes, mortar trough, annealing hood, saucer, caps, burn roods and bearing stator. resistance: - in oxidising burning atmosphere: 1150°C - in reductive burning atmosphere: sensitive for carborising, especially upper 900°C - in oxidising sulfureous gas: in limited case - in reductive sulfureous gas: unresistant

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.9 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

20.0 °C

200 GPa

Elongation

20.0 °C

6 %

Poisson's ratio

23.0 °C

0.3 [-]

Typical for Austenitic Stainless Steel

Shear modulus

23.0 °C

77 GPa

Typical for Austenitic Stainless Steel

Tensile strength

20.0 °C

440 MPa

Yield strength Rp0.2

20.0 °C

230 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

400.0 °C

1.7E-5 1/K

800.0 °C

1.8E-5 1/K

1000.0 °C

1.9E-5 1/K

1200.0 °C

1.95E-5 1/K

Max service temperature, long

0 - 1150 °C

Melting point

1230 - 1480 °C

Typical for Austenitic Stainless Steel

Specific heat capacity

20.0 °C

500 J/(kg·K)

Thermal conductivity

20.0 °C

14.6 W/(m·K)

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

8.6E-7 Ω·m

Chemical properties

PropertyValue

Carbon

0.3 - 0.5 %

Chromium

24 - 26 %

Manganese

1.5 %

Nickel

19 - 21 %

Phosphorus

0.04 %

Silicon

1 - 2.5 %

Sulfur

0.03 %


Metal

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