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NiCr20Ti Grade 2.4630 – Soft Annealed, High‑Temperature Resistant

The aviation material NiCr20Ti with the material number 2.4630 is contained in the Werkstoff-Leistungsblatt der Deutschen Luftfahrt editions WL 2.4630-1 : 1993-08, WL 2.4630-2 : 1993-08, WL 2.4630-3 : 1993-08, WL 2.4630-4 : 1993-08 and WL 2.4630-100 : 1993-08. DIN 17742 among other things contains the material NiCr20Ti with the material number 2.4951. The alloy is scale-resistant up to approximately 1100 °C and possesses high corrosion-resistance and creep strength depending on time up to approximately 750 °C as well as good resistance to temperature variations. The application in carbonizing or sulphur-bearing furnace atmospheres is not recommendable at higher temperatures. Application for components in aviation and space travel, for construction components in gas turbines, such as rings and casing parts, parts for the construction of industrial furnaces, pallets and baskets for the heat treatment of construction components. Processing properties: Formability: good Weldability: good (Werkstoff-Leistungsblatt der Deutschen Luftfahrt/WL: material specification of the German aviation)

Properties

General

PropertyTemperatureValue

Density

20.0 °C

8.4 g/cm³

Mechanical

PropertyTemperatureValue

Elastic modulus

20.0 °C

221 GPa

100.0 °C

216 - 217 GPa

200.0 °C

210 - 211 GPa

300.0 °C

203 - 204 GPa

400.0 °C

196 - 197 GPa

500.0 °C

186 - 190 GPa

600.0 °C

181 - 182 GPa

700.0 °C

173 - 174 GPa

800.0 °C

165 GPa

900.0 °C

153 - 154 GPa

1000.0 °C

140 GPa

Elongation

20.0 °C

25 - 30 %

Elongation A100

20.0 °C

14 - 25 %

Elongation A50, transverse

20.0 °C

30 %

Hardness, Brinell

20.0 °C

229 [-]

Tensile strength

20.0 °C

640 - 930 MPa

Tensile strength, transverse

20.0 °C

640 - 830 MPa

Yield strength Rp0.2

20.0 °C

230 MPa

200.0 °C

304 MPa

300.0 °C

304 MPa

400.0 °C

304 MPa

500.0 °C

294 MPa

600.0 °C

264 MPa

700.0 °C

225 MPa

800.0 °C

118 MPa

900.0 °C

59 MPa

1000.0 °C

49 MPa

Yield strength Rp0.2, transverse

20.0 °C

230 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

100.0 °C

1.1E-5 - 1.17E-5 1/K

200.0 °C

1.26E-5 - 1.27E-5 1/K

300.0 °C

1.32E-5 - 1.34E-5 1/K

400.0 °C

1.38E-5 - 1.39E-5 1/K

500.0 °C

1.43E-5 1/K

600.0 °C

1.48E-5 - 1.5E-5 1/K

700.0 °C

1.54E-5 1/K

800.0 °C

1.6E-5 - 1.65E-5 1/K

900.0 °C

1.66E-5 - 1.71E-5 1/K

1000.0 °C

1.75E-5 - 1.82E-5 1/K

Max service temperature, long

0 - 750 °C

Melting point

1400 °C

Typical for Nickel Chromium Alloy

Specific heat capacity

20.0 °C

445 - 460 J/(kg·K)

100.0 °C

465 J/(kg·K)

200.0 °C

490 J/(kg·K)

300.0 °C

515 J/(kg·K)

400.0 °C

540 J/(kg·K)

500.0 °C

570 J/(kg·K)

600.0 °C

600 J/(kg·K)

700.0 °C

620 J/(kg·K)

800.0 °C

650 J/(kg·K)

900.0 °C

675 J/(kg·K)

1000.0 °C

700 J/(kg·K)

Thermal conductivity

20.0 °C

12.1 - 14 W/(m·K)

100.0 °C

13.7 - 15 W/(m·K)

200.0 °C

15.6 - 16 W/(m·K)

300.0 °C

17.1 - 18 W/(m·K)

400.0 °C

18.8 - 20 W/(m·K)

500.0 °C

20.5 - 22 W/(m·K)

600.0 °C

22.6 - 23 W/(m·K)

700.0 °C

24.5 - 25 W/(m·K)

800.0 °C

26.4 - 27 W/(m·K)

900.0 °C

28.1 - 30 W/(m·K)

1000.0 °C

29.9 W/(m·K)

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

1.09E-6 Ω·m

100.0 °C

1.1E-6 Ω·m

200.0 °C

1.12E-6 Ω·m

300.0 °C

1.15E-6 Ω·m

400.0 °C

1.17E-6 Ω·m

500.0 °C

1.17E-6 Ω·m

600.0 °C

1.15E-6 Ω·m

700.0 °C

1.15E-6 Ω·m

800.0 °C

1.15E-6 Ω·m

900.0 °C

1.15E-6 Ω·m

1000.0 °C

1.16E-6 Ω·m

Chemical properties

PropertyValue

Aluminium

0.3 %

Carbon

0.08 - 0.15 %

Chromium

18 - 21 %

Cobalt

5 %

Copper

0.5 %

Iron

5 %

Lead

5E-3 %

Manganese

1 %

Nickel

65.4 - 65.7 %

Phosphorus

0.2 %

Silicon

1 %

Sulfur

0.02 - 0.15 %

Titanium

0.2 - 0.6 %


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