DIN 17742 Grade NiCr20AlSi soft annealed (+A)

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Description

The material NiCr20AlSi with the material number 2. 4872 is applied in the form of strips and wires (see also heating conductor alloys according to DIN 17470 or electrical resistance alloys according to DIN 17471) for heating conductors and resistors. The material possesses a high electric resistance. A determinate low temperature coefficient can be adjusted, it shows a low thermoelectric potential against copper, shows a high strength and is not ferro-magnetic. The alloy is highly creep-resistant and scale-resistant. Application particularly for high-ohm resistors for measuring purposes and precision resistors.

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 g/cm³

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Mechanical

PropertyTemperatureValueComment

Elastic modulus

23.0 °C

150 - 245 GPa

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Typical for Nickel Chromium Alloy

Elongation A100

20.0 °C

8 - 25 %

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Tensile strength

20.0 °C

1000 MPa

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Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

23.0 °C

7.6E-6 - 1.7E-5 1/K

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Typical for Nickel Chromium Alloy

Melting point

1400 °C

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Typical for Nickel Chromium Alloy

Specific heat capacity

20.0 °C

460 J/(kg·K)

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Thermal conductivity

20.0 °C

14 W/(m·K)

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Chemical properties

PropertyValue

Aluminium

2.5 - 4 %

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Carbon

0.05 %

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Chromium

19 - 21 %

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Copper

0.15 %

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Iron

1 %

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Manganese

0.7 %

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Nickel

73 %

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Phosphorus

0.02 %

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Silicon

0.5 - 2 %

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Sulfur

0.015 %

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