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EN 10095 Grade X10NiCrAlTi32‑21 – Solution Annealed Steel for High‑Temperature Pressure Applications

The high heat-resistant steel X 10 NiCrAlTi 32 20 (now: X10NiCrAlTi32-21), mat. No 1.4876, is applicated acc. to VdTÜV-Wbl 412 : 2001-06 for pressure vessels acc. to AD-data sheet W 2 in soft annealed condition from -10 to 600 °C and in solution annealed condition from -10 to 900 °C, for pressure boilers acc. to TRD 101, TRD 102, TRD 105 and TRD 107 in soft annealed and solution annealed condition like for pressure vessels. Further application in nuclear power engineering as far as nuclear rules or object related specifications approve the use from -10 to 600 °C (soft annealed condition) resp. from -10 to 900 °C (solution annealed condition). The steel has to be used in long-term range in solution annealed delivery condition of grit size 5 or coarsier acc. to DIN 50601. The steel is fusion weldable using metal arc welding by covered rod electrodes (additional materials: 2.4805, 2.4807, 2.4651, 2.4648, 2.4620) and inert arc welding by welding rods and wire electrodes (additional material: 2.4806). Preheating is not necessary, also heat-treatment after welding. For wall thicknesses >50 mm is for reduction of self-equilibrating stress an annealing at 850°C necessary. To material DIN EN 10095 : 1999-03 applies: The high alloyed steel shows scaling resistance up to max. 1100°C (highest application temp. in air). It has favorable resistance to alternation of oxidizing and reducing athmosphere. No embrittlement risk. Well corrosion resistance to hydrocarbon and petrochemical products. Application in reforming and pyrolysis facilities as well as in high-temperature and cracking facilities.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.94 - 8 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

-100.0 °C

201 GPa

20.0 °C

194 GPa

100.0 °C

189 GPa

200.0 °C

183 GPa

300.0 °C

177 GPa

400.0 °C

170 GPa

500.0 °C

163 GPa

600.0 °C

156 GPa

700.0 °C

149 GPa

800.0 °C

141 GPa

900.0 °C

134 GPa

1000.0 °C

127 GPa

Elongation

20.0 °C

30 %

Elongation A80

20.0 °C

28 %

Hardness, Brinell

20.0 °C

192 [-]

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

450 - 680 MPa

Yield strength Rp0.2

20.0 °C

170 MPa

Yield strength Rp1.0

20.0 °C

210 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

-100.0 °C

1.36E-5 1/K

20.0 °C

1.46E-5 1/K

100.0 °C

1.51E-5 1/K

200.0 °C

1.5E-5 - 1.57E-5 1/K

300.0 °C

1.62E-5 1/K

400.0 °C

1.6E-5 - 1.66E-5 1/K

500.0 °C

1.7E-5 1/K

600.0 °C

1.7E-5 - 1.74E-5 1/K

700.0 °C

1.77E-5 1/K

800.0 °C

1.75E-5 - 1.8E-5 1/K

900.0 °C

1.83E-5 1/K

1000.0 °C

1.85E-5 - 1.86E-5 1/K

Max service temperature, long

0 - 1000 °C

Melting point

1230 - 1480 °C

Typical for Austenitic Stainless Steel

Specific heat capacity

-100.0 °C

440 J/(kg·K)

20.0 °C

472 - 550 J/(kg·K)

100.0 °C

487 J/(kg·K)

200.0 °C

503 J/(kg·K)

300.0 °C

512 J/(kg·K)

400.0 °C

520 J/(kg·K)

500.0 °C

530 J/(kg·K)

600.0 °C

541 J/(kg·K)

700.0 °C

551 J/(kg·K)

800.0 °C

559 J/(kg·K)

900.0 °C

565 J/(kg·K)

1000.0 °C

571 J/(kg·K)

Thermal conductivity

20.0 °C

11.5 - 12 W/(m·K)

100.0 °C

13.1 W/(m·K)

200.0 °C

14.8 W/(m·K)

300.0 °C

16.4 W/(m·K)

400.0 °C

18.1 W/(m·K)

500.0 °C

17 - 19.6 W/(m·K)

600.0 °C

21.2 W/(m·K)

700.0 °C

22.8 W/(m·K)

800.0 °C

24.3 W/(m·K)

900.0 °C

25.7 W/(m·K)

1000.0 °C

27.3 W/(m·K)

Thermal diffusivity

20.0 °C

3.1 mm²/s

100.0 °C

3.3 mm²/s

200.0 °C

3.6 mm²/s

300.0 °C

3.9 mm²/s

400.0 °C

4.2 mm²/s

500.0 °C

4.4 mm²/s

600.0 °C

4.6 mm²/s

700.0 °C

4.9 mm²/s

800.0 °C

5.2 mm²/s

900.0 °C

5.5 mm²/s

1000.0 °C

5.7 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

1E-6 - 1.01E-6 Ω·m

100.0 °C

1.04E-6 Ω·m

200.0 °C

1.08E-6 Ω·m

300.0 °C

1.12E-6 Ω·m

400.0 °C

1.15E-6 Ω·m

500.0 °C

1.18E-6 Ω·m

600.0 °C

1.2E-6 Ω·m

700.0 °C

1.22E-6 Ω·m

800.0 °C

1.24E-6 Ω·m

900.0 °C

1.26E-6 Ω·m

1000.0 °C

1.27E-6 Ω·m

Chemical properties

PropertyValue

Aluminium

0.15 - 0.6 %

Carbon

0.12 %

Chromium

19 - 23 %

Manganese

2 %

Nickel

30 - 34 %

Phosphorus

0.03 %

Silicon

1 %

Sulfur

0.015 %

Titanium

0.15 - 0.6 %


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