DIN 17730 Grade G-NiCu30Si3 cast condition

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The nickel-copper alloys show very good resistance to sea water and possesse good corrosion-resistance against non-oxidizing inorganic acids, especially against sulphuric, hydrofluoric and phosphorous acid, against most organic acids and especially against alkaline solutions. Furthermore, they are of excellent resistance to erosion and cavitation. The material G-NiCu30Si3 shows only low galling and fouling in running against other metallic materials, so that the abrasion-resistant materal shows good bearing properties. The strength properties are substantially higher than those of G-NiCu30Nb (2.4365), but they are lower than those of G-NiCu30Si4(2.4368). The material is not weldable. G-NiCu30Si3 is applied in shipbuilding, in the chemical industry, in the oil, paper and food industry, for pickling plants, washing machines, as castings for pumps and pump components, fittings, valves and valve seats, nozzles, turbine blades, guide rails, sliding elements and bearings. The casting is well suitable for stress in terms of pressure-tightness.

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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20.0 °C

8.5 g/cm³

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Elastic modulus

23.0 °C

120 - 156 GPa

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Typical for Nickel Copper Alloy


20.0 °C

10 %

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Hardness, Brinell

20.0 °C

220 [-]

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Tensile strength

20.0 °C

650 MPa

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Yield strength Rp0.2

20.0 °C

350 MPa

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Coefficient of thermal expansion

23.0 °C

1.1E-5 - 1.6E-5 1/K

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Typical for Nickel Copper Alloy

Melting point

1170 - 1365 °C

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Typical for Nickel Copper Alloy

Specific heat capacity

23.0 °C

418 - 540 J/(kg·K)

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Typical for Nickel Copper Alloy

Thermal conductivity

23.0 °C

16 - 45 W/(m·K)

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Typical for Nickel Copper Alloy

Chemical properties



0.5 - 1.5 %

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0.25 %

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27 - 33 %

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1 - 2.5 %

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0.01 %

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0.12 %

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61 - 68 %

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2.7 - 3.7 %

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0.01 %

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0.2 %

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Technological properties

Processing methods

sand casting, separately cast test sample