DIN 17744 Grade NiCr21Mo6Cu

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Description

The general corrosion properties of NiCr21Mo6Cu with the material number 2.4641 are comparable with those of NiCr21Mo (material number 2.4858). It possesses a good resistance to reducing and oxidizing mediums and, due to the high Mo-content, it also is resistant to pitting in strongly chlorine-polluted mediums. Furthermore, the material is virtually insensitive to stress cracking corrosion. Among other things, it is applied in the production of phosphoric acid, in the offshore technology and in flue-gas washing devices. In the new edition of the DIN 17744 : 2002-09, the material is not contained any more.

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

8.3 g/cm³

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Mechanical

PropertyTemperatureValue

Elastic modulus

20.0 °C

200 GPa

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Elongation

100.0 °C

50 %

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200.0 °C

50 %

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300.0 °C

45 %

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400.0 °C

50 %

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500.0 °C

50 %

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600.0 °C

50 %

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Tensile strength

100.0 °C

620 MPa

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200.0 °C

605 MPa

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300.0 °C

580 MPa

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400.0 °C

560 MPa

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500.0 °C

550 MPa

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600.0 °C

540 MPa

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Yield strength Rp0.2

100.0 °C

290 MPa

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200.0 °C

280 MPa

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300.0 °C

250 MPa

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400.0 °C

220 MPa

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500.0 °C

215 MPa

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600.0 °C

210 MPa

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Yield strength Rp1.0

100.0 °C

310 MPa

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200.0 °C

310 MPa

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300.0 °C

280 MPa

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400.0 °C

260 MPa

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500.0 °C

255 MPa

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600.0 °C

250 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

500 J/(kg·K)

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Thermal conductivity

20.0 °C

11 W/(m·K)

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Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

1.1E-6 Ω·m

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Chemical properties

PropertyValue

Aluminium

0.2 %

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Carbon

0.025 %

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Chromium

20 - 23 %

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Cobalt

1 %

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Copper

1.5 - 3 %

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Iron

17.2 %

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Manganese

1 %

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Molybdenum

5.5 - 7 %

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Nickel

39 - 46 %

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Phosphorus

0.03 %

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Silicon

0.5 %

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Sulfur

0.015 %

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Titanium

0.6 - 1 %

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