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EN 10088-1 X3CrTi17 Soft Annealed (+A): Premium Stainless Steel for High‑Temperature, High‑Pressure Tubing

Acc. VdTÜV material data sheet 494 : 1996-06 the stainless ferritic steel X 6 CrTi 17, mat. no. 1.4510, is used for longitudinal welded tubes for pressure vessels acc. TRB 100 and AD data sheet W 2 at operating temperatures from - 10 to 280 °C. and pressures up to 50 bar and for type approved hot water boiler up to 100 °C. The weldability is examined allowing for the generally accepted engineering rules for inert arc welding without filler or with wire electrode and for seam welding. Preheating is mostly not necessary, the intermediate layer temperature amounts to max. 200 °C. An heat treatment after the welding is unusual. Longitudinal welded tubes have to recrystallising annealed. The material is also in the welded condition resistant against intercrystalline corrosion. For the material acc. DIN EN 10088-1 : 1995-08 applies: The mark X3CrTi17 is comparable to X 6 CrTi 17 (here higher C-content). This material is a ferritic steel with comparable general corrosion properties like 1.4016. It is widely resistant in water, steam, weak acids and bases as well as in oxidizing acids. The steel shows increased stress corrosion resistance in hot bases, low chloride containing water. No risk of intercrystalline corrosion after welding due to Ti-addition, but it is therefore unsuitable for mirror finishing. Application for welded parts in washing machines (lye tanks) and partly in chemical apparatus engineering (weak acids), in dairy, food, brewery, dyeing and soap 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 - 215 GPa

200.0 °C

206 - 210 GPa

300.0 °C

198 - 205 GPa

400.0 °C

190 - 195 GPa

500.0 °C

180 GPa

600.0 °C

167 GPa

700.0 °C

150 GPa

Elongation

20.0 °C

23 %

Elongation A80

20.0 °C

23 %

Elongation A80, transverse

20.0 °C

23 %

Elongation, transverse

20.0 °C

23 %

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

420 - 600 MPa

Yield strength Rp0.2

20.0 °C

230 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

240 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

Max service temperature, long

-10 - 280 °C

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 %

Titanium

0.8 %


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