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EN 10088-1 Grade X1CrNiMoN25-22-2 – Solution Annealed Steel for High-Temperature Pressure Vessels

Material X 2 CrNiMoN 25 22, (now: X1CrNiMoN25-22-2 ), material number 1.4466 is applicated acc. to VdTÜV-Wbl 415 : 2001-09 (sheets) for pressure vessels acc. to TRB 100 and AD-data sheet W 2 and W 10 from -195 to 400 °C (heavy duty). Further application in nuclear power engineering as far as nuclear regulations or object-related specifications permit use from -195 to 400 °C. Acc. to VdTÜV-Wbl 415-2 : 2002-03 (pipes, seamless) it is used for pressure vessels as per TU 100 and AD-data sheet W 2 from -10 to 400 °C. under full loading. Further application in nuclear power engineering as far as nuclear regulations or object-related specifications permit use from -10 to 400 °C. Acc. to VdTÜV-Wbl 415-3 : 2001-09 (section steel and bar steel, forged parts) it is applicable for pressure vessels as per TRB 100 and AD-data sheets W 2 and W 10 from -50 to 400 °C. Further application in nuclear power engineering as far as nuclear regulations or object-related specifications permit use from -50 to 400 °C. The welding suitability is examined allowing for generally accepted engineering rules for metal arc welding (VdTÜV-Wbl 415 : 2001-09 without subsequent heat treatment), MIG-welding with covered rod electrodes, metal arc welding with welding wire and welding rods (VdTÜV-Wbl 415-2 : 2002-03 preheating normally not necessary, intermediate temp. max. 200 °C., heat aftertreatment normally not necessary) and for arc hand welding resp. TIG-welding (VdTÜV-Wbl 415-3 : 2001-09 preheating normally not necessary, intermediate temp. max. 150 °C., heat aftertreatment normally not necessary). To the austenitic steel X1CrNiMoN25-22-2 nach DIN EN 10088-1 : 1995-04 applies: the material is comparable to X 2 CrNiMoN 25 22 2 acc. to Key to steel 1995 resp. Register of European steels 1994. It is a fully austenitic special steel with good corrosion resistance in the urea synthesis. It is resistant to intercrystalline corrosion also in sensitized condition and polishable.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.76 - 8 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

-100.0 °C

206 GPa

20.0 °C

195 - 196 GPa

100.0 °C

190 GPa

200.0 °C

182 GPa

300.0 °C

174 GPa

400.0 °C

166 GPa

500.0 °C

158 GPa

600.0 °C

150 GPa

700.0 °C

142 GPa

800.0 °C

134 GPa

900.0 °C

127 GPa

1000.0 °C

120 GPa

Elongation

20.0 °C

20 - 35 %

Elongation A80, transverse

20.0 °C

40 %

Elongation, transverse

20.0 °C

30 - 40 %

Hardness, Brinell

20.0 °C

240 [-]

Hardness, Brinell, trans

20.0 °C

240 [-]

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

540 - 1100 MPa

Tensile strength, transverse

20.0 °C

540 - 740 MPa

Yield strength Rp0.2

20.0 °C

250 MPa

100.0 °C

195 MPa

150.0 °C

170 MPa

200.0 °C

160 MPa

250.0 °C

150 MPa

300.0 °C

140 MPa

350.0 °C

135 MPa

Yield strength Rp0.2, transverse

20.0 °C

250 MPa

Yield strength Rp1.0

20.0 °C

290 MPa

100.0 °C

225 MPa

150.0 °C

205 MPa

200.0 °C

190 MPa

250.0 °C

180 MPa

300.0 °C

170 MPa

350.0 °C

165 MPa

Yield strength Rp1.0, transverse

20.0 °C

290 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

-100.0 °C

1.49E-5 1/K

20.0 °C

1.61E-5 1/K

100.0 °C

1.57E-5 - 1.67E-5 1/K

200.0 °C

1.72E-5 1/K

300.0 °C

1.7E-5 - 1.77E-5 1/K

400.0 °C

1.81E-5 1/K

500.0 °C

1.84E-5 1/K

600.0 °C

1.88E-5 1/K

700.0 °C

1.91E-5 1/K

800.0 °C

1.94E-5 1/K

900.0 °C

1.97E-5 1/K

1000.0 °C

2E-5 1/K

Max service temperature, long

-196 - 400 °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 - 500 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

11.9 - 14 W/(m·K)

100.0 °C

13.3 W/(m·K)

200.0 °C

15.1 W/(m·K)

300.0 °C

16.7 W/(m·K)

400.0 °C

18.3 W/(m·K)

500.0 °C

19.8 W/(m·K)

600.0 °C

21.3 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

27.1 W/(m·K)

Thermal diffusivity

20.0 °C

3.3 mm²/s

100.0 °C

3.4 mm²/s

200.0 °C

3.7 mm²/s

300.0 °C

4.1 mm²/s

400.0 °C

4.3 mm²/s

500.0 °C

4.5 mm²/s

600.0 °C

4.7 mm²/s

700.0 °C

5 mm²/s

800.0 °C

5.4 mm²/s

900.0 °C

5.7 mm²/s

1000.0 °C

5.8 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

8E-7 - 9.59E-7 Ω·m

100.0 °C

1.01E-6 Ω·m

200.0 °C

1.05E-6 Ω·m

300.0 °C

1.1E-6 Ω·m

400.0 °C

1.13E-6 Ω·m

500.0 °C

1.17E-6 Ω·m

600.0 °C

1.19E-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

1.28E-6 Ω·m

Chemical properties

PropertyValue

Carbon

0.02 %

Chromium

24 - 26 %

Manganese

2 %

Molybdenum

2 - 2.5 %

Nickel

21 - 23 %

Nitrogen

0.1 - 0.16 %

Phosphorus

0.03 %

Silicon

0.7 %

Sulfur

0.01 %


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