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EN 10095 X15CrNiSi25-4 Solution-Annealed Steel (+AT) – Superior Heat Resistance

The heat-resistant steel Stahl X15CrNiSi25-4, mat. No 1.4821 shows a max. resistance up to 1100 °C (highest application temp. in air). The material is resistant to oxidizing, sulfureous gases shows resistance to reducing, sulfureous, carburizing, nitrogenous and oxygen deficient gases. Application in a temp. range of 400 to 500°C and 600 to 850 °C should be avoided due to the embrittlement risk. Permanent application temp. accounts for 900 °C. Application for oven components and fittings, for winding ropes, rails, drums.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.66 - 7.7 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

20.0 °C

203 GPa

100.0 °C

197 GPa

200.0 °C

190 GPa

300.0 °C

181 GPa

400.0 °C

171 GPa

500.0 °C

158 GPa

600.0 °C

147 GPa

700.0 °C

140 GPa

800.0 °C

135 GPa

900.0 °C

131 GPa

1000.0 °C

127 GPa

Elongation

20.0 °C

16 %

Elongation, transverse

20.0 °C

12 %

Hardness, Brinell

20.0 °C

235 [-]

Poisson's ratio

23.0 °C

0.3 [-]

Typical for Austenitic Stainless Steel

Shear modulus

23.0 °C

77 GPa

Typical for Austenitic Stainless Steel

Tensile strength

20.0 °C

600 - 850 MPa

Tensile strength, transverse

20.0 °C

600 - 850 MPa

Yield strength Rp0.2

20.0 °C

400 MPa

Yield strength Rp0.2, transverse

20.0 °C

400 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

-100.0 °C

1.08E-5 1/K

20.0 °C

1.15E-5 1/K

100.0 °C

1.18E-5 1/K

200.0 °C

1.24E-5 - 1.3E-5 1/K

300.0 °C

1.29E-5 1/K

400.0 °C

1.32E-5 - 1.35E-5 1/K

500.0 °C

1.35E-5 1/K

600.0 °C

1.38E-5 - 1.4E-5 1/K

700.0 °C

1.4E-5 1/K

800.0 °C

1.42E-5 - 1.45E-5 1/K

900.0 °C

1.46E-5 1/K

1000.0 °C

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

Max service temperature, long

0 - 950 °C

Melting point

1230 - 1480 °C

Typical for Austenitic Stainless Steel

Specific heat capacity

20.0 °C

459 - 500 J/(kg·K)

100.0 °C

498 J/(kg·K)

200.0 °C

530 J/(kg·K)

300.0 °C

549 J/(kg·K)

400.0 °C

569 J/(kg·K)

500.0 °C

594 J/(kg·K)

600.0 °C

632 J/(kg·K)

700.0 °C

640 J/(kg·K)

800.0 °C

642 J/(kg·K)

900.0 °C

643 J/(kg·K)

1000.0 °C

645 J/(kg·K)

Thermal conductivity

20.0 °C

17 - 17.2 W/(m·K)

100.0 °C

18.3 W/(m·K)

200.0 °C

19.5 W/(m·K)

300.0 °C

20.8 W/(m·K)

400.0 °C

21.8 W/(m·K)

500.0 °C

22.7 - 23 W/(m·K)

600.0 °C

23.6 W/(m·K)

700.0 °C

24.9 W/(m·K)

800.0 °C

26.1 W/(m·K)

900.0 °C

27.6 W/(m·K)

1000.0 °C

28.8 W/(m·K)

Thermal diffusivity

20.0 °C

4.9 mm²/s

100.0 °C

4.5 mm²/s

200.0 °C

4.5 mm²/s

300.0 °C

4.6 mm²/s

400.0 °C

4.6 mm²/s

500.0 °C

3.6 mm²/s

600.0 °C

4.2 mm²/s

700.0 °C

5.1 mm²/s

800.0 °C

5.4 mm²/s

900.0 °C

5.7 mm²/s

1000.0 °C

5.9 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

8.41E-7 - 9E-7 Ω·m

100.0 °C

8.89E-7 Ω·m

200.0 °C

9.47E-7 Ω·m

300.0 °C

9.91E-7 Ω·m

400.0 °C

1.05E-6 Ω·m

500.0 °C

1.1E-6 Ω·m

600.0 °C

1.15E-6 Ω·m

700.0 °C

1.18E-6 Ω·m

800.0 °C

1.21E-6 Ω·m

900.0 °C

1.23E-6 Ω·m

1000.0 °C

1.25E-6 Ω·m

Chemical properties

PropertyValue

Carbon

0.1 - 0.2 %

Chromium

24.5 - 26.5 %

Manganese

2 %

Nickel

3.5 - 5.5 %

Nitrogen

0.11 %

Phosphorus

0.04 %

Silicon

0.8 - 1.5 %

Sulfur

0.015 %


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