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DIN 17440: X3CrTi17 Soft Annealed Steel – Superior Corrosion Resistance for Pressure Vessels

The for pressure vessels approved material X3CrTi17, mat. no. 1.4510, has an similar corrosion behaviour like the X6Cr17 (1.4016). The steel is resistant to intercrystalline corrosion in the delivery condition and also in the welded condition. It is higher resistant to stress corrosion in hot lyes and weak chloride containing waters. Because of the Ti-content there is no danger for intercrystalline corrosion after welding. Thats why the steel is not high polishable. According DIN 17440 : 1996-09 it is used for flat products and rods and drawn wire and acc. DIN 17441 : 1997-02 for cold rolled strips and slit strips for pressure vessels. For the application acc. DIN 17440 : 1985-07 (X 6 CrTi 17) resp. acc. DIN EN 10088-1,-2,-3 : 1995-08 (X3CrTi17) applies: application for welded parts in washing machines (lye bins) and partially in the chemical apparatus engineering (weak acids), in the milk industry, food industry, brewery industry, textile industry and cosmetic industry.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.56 - 7.7 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

20.0 °C

218 - 220 GPa

100.0 °C

213 - 218 GPa

200.0 °C

206 - 212 GPa

300.0 °C

198 - 205 GPa

400.0 °C

190 - 197 GPa

500.0 °C

180 GPa

600.0 °C

167 GPa

700.0 °C

150 GPa

Elongation

20.0 °C

20 - 23 %

Elongation A80

20.0 °C

18 - 23 %

Elongation, transverse

20.0 °C

18 %

Hardness, Brinell

20.0 °C

185 [-]

Hardness, Brinell, trans

20.0 °C

185 [-]

Hardness, Vickers

20.0 °C

185 [-]

Poisson's ratio

23.0 °C

0.3 [-]

Typical for Ferritic Stainless Steel

Shear modulus

23.0 °C

77 GPa

Typical for Ferritic Stainless Steel

Tensile strength

20.0 °C

420 - 600 MPa

Tensile strength, transverse

20.0 °C

430 - 600 MPa

Yield strength

20.0 °C

270 MPa

Yield strength Rp0.2

20.0 °C

230 - 270 MPa

100.0 °C

195 MPa

150.0 °C

190 MPa

200.0 °C

185 MPa

250.0 °C

175 MPa

300.0 °C

165 MPa

350.0 °C

155 MPa

Yield strength Rp0.2, transverse

20.0 °C

270 MPa

Yield strength, transverse

20.0 °C

270 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

20.0 °C

9.9E-6 1/K

100.0 °C

1E-5 - 1.03E-5 1/K

200.0 °C

1E-5 - 1.08E-5 1/K

300.0 °C

1.05E-5 - 1.12E-5 1/K

400.0 °C

1.05E-5 - 1.16E-5 1/K

500.0 °C

1.1E-5 - 1.19E-5 1/K

600.0 °C

1.21E-5 1/K

700.0 °C

1.24E-5 1/K

800.0 °C

1.29E-5 1/K

Melting point

1425 - 1530 °C

Typical for Ferritic Stainless Steel

Specific heat capacity

20.0 °C

450 - 460 J/(kg·K)

100.0 °C

482 J/(kg·K)

200.0 °C

506 J/(kg·K)

300.0 °C

525 J/(kg·K)

400.0 °C

547 J/(kg·K)

500.0 °C

576 J/(kg·K)

600.0 °C

616 J/(kg·K)

Thermal conductivity

20.0 °C

16 - 25 W/(m·K)

100.0 °C

17.2 W/(m·K)

200.0 °C

18.6 W/(m·K)

300.0 °C

20 W/(m·K)

400.0 °C

21.2 W/(m·K)

500.0 °C

22.3 W/(m·K)

600.0 °C

23.3 W/(m·K)

700.0 °C

24.1 W/(m·K)

800.0 °C

25.5 W/(m·K)

900.0 °C

26.9 W/(m·K)

1000.0 °C

28.3 W/(m·K)

Thermal diffusivity

20.0 °C

4.7 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

4.4 mm²/s

500.0 °C

4.1 mm²/s

600.0 °C

3.6 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

6E-7 - 9.06E-7 Ω·m

100.0 °C

9.42E-7 Ω·m

200.0 °C

9.87E-7 Ω·m

300.0 °C

1.03E-6 Ω·m

400.0 °C

1.08E-6 Ω·m

500.0 °C

1.12E-6 Ω·m

600.0 °C

1.18E-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

Carbon

0.05 %

Chromium

16 - 18 %

Manganese

1 %

Phosphorus

0.04 %

Silicon

1 %

Sulfur

0.015 - 0.03 %

Titanium

0.8 %


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