DIN 17730 Grade G-NiCu30Si4 cast condition

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Description

The copper-nickel 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-NiCu30Si4 shows only low galling and fouling in running against other metallic materials. In comparison to the material G-NiCu30Si3(2.4367), the alloy G-NiCu30Si4 (2.4368) shows improved bearing and strength properties (higher Si-content!) The material is not weldable. G-NiCu30Si4 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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Properties

General

PropertyTemperatureValue

Density

20.0 °C

8.4 g/cm³

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Mechanical

PropertyTemperatureValueComment

Elastic modulus

23.0 °C

120 - 156 GPa

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Typical for Nickel Copper Alloy

Elongation

20.0 °C

1 %

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Hardness, Brinell

20.0 °C

260 [-]

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Tensile strength

20.0 °C

750 MPa

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Yield strength Rp0.2

20.0 °C

500 MPa

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Thermal

PropertyTemperatureValueComment

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

PropertyValue

Aluminium

0.5 %

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Carbon

0.25 %

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Copper

27 - 31 %

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Iron

1 - 2.5 %

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Lead

0.01 %

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Magnesium

0.12 %

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Manganese

0.5 - 1.5 %

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Nickel

60 - 68 %

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Silicon

3.5 - 4.5 %

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Sulfur

0.01 %

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Titanium

0.2 %

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Technological properties

Property
Processing methods

sand casting, separately cast test sample