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EN 10095 NiCr23Fe Alloy – Solution Annealed for Superior High‑Temperature Oxidation Resistance

NiCr23Fe shows favorable oxidation resistance at high temperatures due to the Al- and high Cr-content. Excellent high-temperature strength and excellent scaling resistance allow application temperatures up to 1200°C (highest application temperatures in air). Favorable resistance to carburization and nitriding. Resistance to stress corrosion in presence of chloride ions as well as to corrosion in high-purity water and alkaline media. Application for boxes, fastener, steel tubes, transpot bands, furnace sheaves in annealing furnaces, insulation inerts in ammoniac cracking plants and for catalyst-fences in nitrous acid production, components for catalytic converters, combuster of waste incineration plants, components for heat-treatment furnaces, muffles and transport sheaves for ceramic stoves, components for gas turbines, oxygen preheater in titanium dioxide production, bolts and screws for refractory anchorage as well as for flare heads. processing properties: formability: good weldability: satisfactory machinability: good (solution annealed condition)

Properties

General

PropertyTemperatureValue

Density

20.0 °C

8.1 g/cm³

Mechanical

PropertyTemperatureValue

Elastic modulus

20.0 °C

207 GPa

100.0 °C

201 GPa

200.0 °C

196 GPa

300.0 °C

191 GPa

400.0 °C

186 GPa

500.0 °C

180 GPa

600.0 °C

171 GPa

700.0 °C

161 GPa

800.0 °C

150 GPa

900.0 °C

138 GPa

1000.0 °C

129 GPa

1100.0 °C

130 GPa

Elongation

20.0 °C

30 %

Hardness, Brinell

20.0 °C

220 [-]

Tensile strength

20.0 °C

550 - 750 MPa

Yield strength Rp0.2

20.0 °C

205 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

100.0 °C

1.38E-5 1/K

200.0 °C

1.44E-5 1/K

300.0 °C

1.46E-5 1/K

400.0 °C

1.48E-5 1/K

500.0 °C

1.51E-5 1/K

600.0 °C

1.57E-5 1/K

700.0 °C

1.63E-5 1/K

800.0 °C

1.67E-5 1/K

900.0 °C

1.72E-5 1/K

1000.0 °C

1.77E-5 1/K

1100.0 °C

1.83E-5 1/K

Max service temperature, long

0 - 1200 °C

Melting point

1200 - 1480 °C

Typical for Nickel Chromium Iron Alloy

Specific heat capacity

20.0 °C

450 J/(kg·K)

100.0 °C

470 J/(kg·K)

200.0 °C

500 J/(kg·K)

300.0 °C

525 J/(kg·K)

400.0 °C

550 J/(kg·K)

500.0 °C

580 J/(kg·K)

600.0 °C

600 J/(kg·K)

700.0 °C

630 J/(kg·K)

800.0 °C

660 J/(kg·K)

900.0 °C

690 J/(kg·K)

1000.0 °C

710 J/(kg·K)

1100.0 °C

740 J/(kg·K)

Thermal conductivity

20.0 °C

11.3 W/(m·K)

100.0 °C

12.7 W/(m·K)

200.0 °C

14.4 W/(m·K)

300.0 °C

16 W/(m·K)

400.0 °C

17.6 W/(m·K)

500.0 °C

19.2 W/(m·K)

600.0 °C

20.6 W/(m·K)

700.0 °C

22.2 W/(m·K)

800.0 °C

24.5 W/(m·K)

900.0 °C

26.1 W/(m·K)

1000.0 °C

27.7 W/(m·K)

1100.0 °C

29.3 W/(m·K)

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

1.19E-6 Ω·m

100.0 °C

1.2E-6 Ω·m

200.0 °C

1.22E-6 Ω·m

300.0 °C

1.24E-6 Ω·m

400.0 °C

1.25E-6 Ω·m

500.0 °C

1.25E-6 Ω·m

600.0 °C

1.26E-6 Ω·m

700.0 °C

1.26E-6 Ω·m

800.0 °C

1.27E-6 Ω·m

900.0 °C

1.28E-6 Ω·m

1000.0 °C

1.29E-6 Ω·m

1100.0 °C

1.3E-6 Ω·m

Chemical properties

PropertyValue

Aluminium

1 - 1.7 %

Boron

6E-3 %

Carbon

0.03 - 0.1 %

Chromium

21 - 25 %

Copper

0.5 %

Iron

18 %

Manganese

1 %

Nickel

58 - 63 %

Phosphorus

0.02 %

Silicon

0.5 %

Sulfur

0.015 %

Titanium

0.5 %


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