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EN 10272 Grade X5CrNi18-10 Solution-Annealed Steel (+AT): Premium Austenitic Steel for Pressure Vessels

The austenitic steel grade X5CrNi18-10 acc. to DIN EN 10272 : 2001-01is used for hot and cold formed rods for pressure vessel. The standard-type of the austenitic CrNi-steels shows high corrosion resistance but no resistance to intercrystalline corrosion (ic) in sensitized condition (resistance to ic available for cross sections up to 40 mm, if sensitization-treatment of 10 min. has been carried out at 650°C +/- 10°C with subsequent cooling in water). It is resistant in delivery condition for cross sections up to 40 mm. The steel is good processable and very good cold formable and it is suitable for mirror finishing.

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Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.9 - 7.92 g/cm³

Mechanical

PropertyTemperatureValue

Elastic modulus

-100.0 °C

206 GPa

20.0 °C

196 - 200 GPa

24.0 °C

194.4 - 196.5 GPa

100.0 °C

190 - 194 GPa

149.0 °C

188.2 - 189.6 GPa

200.0 °C

182 - 186 GPa

260.0 °C

182.7 - 184.1 GPa

300.0 °C

174 - 179 GPa

371.0 °C

173.1 - 177.9 GPa

400.0 °C

166 - 172 GPa

483.0 °C

157.9 - 160 GPa

500.0 °C

158 - 165 GPa

593.0 °C

149.6 - 155.8 GPa

600.0 °C

150 GPa

700.0 °C

142 GPa

704.0 °C

137.9 - 144.8 GPa

800.0 °C

134 GPa

816.0 °C

120.7 - 128.2 GPa

Elongation

20.0 °C

45 %

Elongation, transverse

20.0 °C

35 %

Hardness, Brinell

20.0 °C

215 [-]

Hardness, Brinell, trans

20.0 °C

215 [-]

Poisson's ratio

20.0 °C

0.28 [-]

24.0 °C

0.24 - 0.25 [-]

149.0 °C

0.27 - 0.3 [-]

260.0 °C

0.29 - 0.32 [-]

371.0 °C

0.32 [-]

483.0 °C

0.27 - 0.29 [-]

593.0 °C

0.29 - 0.3 [-]

704.0 °C

0.27 - 0.3 [-]

816.0 °C

0.23 - 0.27 [-]

Shear modulus

24.0 °C

78.6 GPa

149.0 °C

72.4 - 74.5 GPa

260.0 °C

69.6 - 71 GPa

371.0 °C

65.5 - 67.6 GPa

483.0 °C

62.1 GPa

593.0 °C

57.9 - 60 GPa

704.0 °C

54.5 - 55.9 GPa

816.0 °C

49 - 50.3 GPa

Tensile strength

20.0 °C

500 - 700 MPa

100.0 °C

450 MPa

150.0 °C

420 MPa

200.0 °C

400 MPa

250.0 °C

390 MPa

300.0 °C

380 MPa

350.0 °C

380 MPa

400.0 °C

380 MPa

450.0 °C

370 MPa

500.0 °C

360 MPa

550.0 °C

330 MPa

Tensile strength, transverse

20.0 °C

500 - 700 MPa

Yield strength Rp0.2

20.0 °C

190 MPa

100.0 °C

155 MPa

150.0 °C

140 MPa

200.0 °C

127 MPa

250.0 °C

118 MPa

300.0 °C

110 MPa

350.0 °C

104 MPa

400.0 °C

98 MPa

450.0 °C

95 MPa

500.0 °C

92 MPa

550.0 °C

90 MPa

Yield strength Rp0.2, transverse

20.0 °C

190 MPa

Yield strength Rp1.0

20.0 °C

225 MPa

100.0 °C

190 MPa

150.0 °C

170 MPa

200.0 °C

155 MPa

250.0 °C

145 MPa

300.0 °C

135 MPa

350.0 °C

129 MPa

400.0 °C

125 MPa

450.0 °C

122 MPa

500.0 °C

120 MPa

550.0 °C

120 MPa

Yield strength Rp1.0, transverse

20.0 °C

225 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

1.6E-5 - 1.67E-5 1/K

200.0 °C

1.65E-5 - 1.72E-5 1/K

300.0 °C

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

400.0 °C

1.75E-5 - 1.81E-5 1/K

500.0 °C

1.8E-5 - 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

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)

Thermal conductivity

-100.0 °C

11.7 W/(m·K)

20.0 °C

14.5 - 15 W/(m·K)

100.0 °C

16 W/(m·K)

200.0 °C

17.6 W/(m·K)

300.0 °C

19.1 W/(m·K)

400.0 °C

20.4 W/(m·K)

500.0 °C

21.9 W/(m·K)

600.0 °C

23.3 W/(m·K)

700.0 °C

24.7 W/(m·K)

800.0 °C

26.1 W/(m·K)

Thermal diffusivity

-100.0 °C

3.7 mm²/s

20.0 °C

3.9 mm²/s

100.0 °C

4.3 mm²/s

200.0 °C

4.3 mm²/s

300.0 °C

4.6 mm²/s

400.0 °C

4.7 mm²/s

500.0 °C

4.9 mm²/s

600.0 °C

5 mm²/s

700.0 °C

5.3 mm²/s

800.0 °C

5.7 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

-100.0 °C

5.86E-7 Ω·m

20.0 °C

6.92E-7 - 7.3E-7 Ω·m

100.0 °C

7.58E-7 Ω·m

200.0 °C

8.36E-7 Ω·m

300.0 °C

9.07E-7 Ω·m

400.0 °C

9.73E-7 Ω·m

500.0 °C

1.02E-6 Ω·m

600.0 °C

1.06E-6 Ω·m

700.0 °C

1.1E-6 Ω·m

800.0 °C

1.13E-6 Ω·m

Chemical properties

PropertyValue

Carbon

0.07 %

Chromium

17 - 19.5 %

Manganese

2 %

Nickel

8 - 10.5 %

Nitrogen

0.1 - 0.11 %

Phosphorus

0.05 %

Silicon

1 %

Sulfur

0.015 - 0.03 %


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