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EN 10272 Grade X2CrNi18-9 (Solution Annealed) – Corrosion‑Resistant Steel for Pressure Vessels

The austenitic steel grade X2CrNi18-9 acc. to DIN EN 10272 : 2001-01is used for hot and cold formed rods for pressure vessels. The material is resistant to intercrystalline corrosion also in sensitized condition.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.9 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

20.0 °C

200 GPa

100.0 °C

194 GPa

200.0 °C

186 GPa

300.0 °C

179 GPa

400.0 °C

172 GPa

500.0 °C

165 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

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 - 700 MPa

100.0 °C

410 MPa

150.0 °C

380 MPa

200.0 °C

360 MPa

250.0 °C

350 MPa

300.0 °C

340 MPa

350.0 °C

340 MPa

Tensile strength, transverse

20.0 °C

450 - 700 MPa

Yield strength Rp0.2

20.0 °C

175 MPa

100.0 °C

145 MPa

150.0 °C

130 MPa

200.0 °C

118 MPa

250.0 °C

108 MPa

300.0 °C

100 MPa

350.0 °C

94 MPa

400.0 °C

89 MPa

450.0 °C

85 MPa

500.0 °C

81 MPa

550.0 °C

80 MPa

Yield strength Rp0.2, transverse

20.0 °C

175 MPa

Yield strength Rp1.0

20.0 °C

210 MPa

100.0 °C

180 MPa

150.0 °C

160 MPa

200.0 °C

145 - 147 MPa

250.0 °C

135 MPa

300.0 °C

127 MPa

350.0 °C

121 - 221 MPa

400.0 °C

116 MPa

450.0 °C

112 MPa

500.0 °C

109 MPa

550.0 °C

108 MPa

Yield strength Rp1.0, transverse

20.0 °C

210 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

100.0 °C

1.6E-5 1/K

200.0 °C

1.65E-5 1/K

300.0 °C

1.7E-5 1/K

400.0 °C

1.8E-5 1/K

500.0 °C

1.8E-5 1/K

Melting point

1230 - 1480 °C

Typical for Austenitic Stainless Steel

Specific heat capacity

20.0 °C

500 J/(kg·K)

Thermal conductivity

20.0 °C

15 W/(m·K)

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

7.3E-7 Ω·m

Chemical properties

PropertyValue

Carbon

0.03 %

Chromium

17.5 - 19.5 %

Manganese

2 %

Nickel

8 - 10 %

Nitrogen

0.1 - 0.11 %

Phosphorus

0.05 %

Silicon

1 %

Sulfur

0.015 - 0.03 %


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