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DIN 17441 X6CrTi12 Soft Annealed Steel – High Temperature Resistance & Corrosion Protection for Automotive Exhaust Systems

- ferritic steel with good resistance to scaling (on air to 800 °C), which also a certain corrosive resistance possesses - employment mainly in the automobile industry for mufflers and for parts of exhaust emission control (stampings, pipes)

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.7 - 7.73 g/cm³

Mechanical

PropertyTemperatureValue

Elastic modulus

20.0 °C

217 - 220 GPa

100.0 °C

215 - 216 GPa

200.0 °C

188 - 209 GPa

300.0 °C

164 - 200 GPa

400.0 °C

192 GPa

500.0 °C

183 GPa

Elongation

20.0 °C

20 - 30 %

Elongation, transverse

20.0 °C

18 - 25 %

Hardness, Brinell

20.0 °C

175 - 180 [-]

Poisson's ratio

20.0 °C

0.29 [-]

Shear modulus

20.0 °C

84.82 GPa

Tensile strength

20.0 °C

390 - 560 MPa

Tensile strength, transverse

20.0 °C

390 - 560 MPa

Yield strength Rp0.2

20.0 °C

190 - 220 MPa

50.0 °C

240 MPa

100.0 °C

230 MPa

150.0 °C

210 MPa

200.0 °C

200 MPa

250.0 °C

195 MPa

300.0 °C

190 MPa

350.0 °C

185 MPa

400.0 °C

180 MPa

Yield strength Rp0.2, transverse

20.0 °C

190 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

20.0 °C

1.02E-5 1/K

100.0 °C

1.04E-5 - 1.05E-5 1/K

200.0 °C

1.08E-5 - 1.09E-5 1/K

300.0 °C

1.12E-5 - 1.13E-5 1/K

400.0 °C

1.16E-5 1/K

500.0 °C

1.19E-5 - 1.2E-5 1/K

600.0 °C

1.22E-5 1/K

Melting point

1425 - 1530 °C

Typical for Ferritic Stainless Steel

Specific heat capacity

20.0 °C

430 - 439 J/(kg·K)

100.0 °C

474 J/(kg·K)

200.0 °C

498 J/(kg·K)

300.0 °C

517 J/(kg·K)

400.0 °C

538 J/(kg·K)

500.0 °C

564 J/(kg·K)

600.0 °C

598 J/(kg·K)

Thermal conductivity

20.0 °C

25 - 25.9 W/(m·K)

100.0 °C

25.3 W/(m·K)

200.0 °C

25.2 W/(m·K)

300.0 °C

25.2 W/(m·K)

400.0 °C

25.4 W/(m·K)

500.0 °C

25.7 W/(m·K)

600.0 °C

25.9 W/(m·K)

Thermal diffusivity

20.0 °C

7.6 mm²/s

100.0 °C

6.6 mm²/s

200.0 °C

6.1 mm²/s

300.0 °C

5.8 mm²/s

400.0 °C

5.3 mm²/s

500.0 °C

4.8 mm²/s

600.0 °C

4.1 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

5.59E-7 - 6E-7 Ω·m

100.0 °C

6.4E-7 Ω·m

200.0 °C

7.32E-7 Ω·m

300.0 °C

8.17E-7 Ω·m

400.0 °C

8.97E-7 Ω·m

500.0 °C

9.74E-7 Ω·m

600.0 °C

1.05E-6 Ω·m

Chemical properties

PropertyValue

Carbon

0.08 %

Chromium

10.5 - 12.5 %

Manganese

1 %

Phosphorus

0.05 %

Silicon

1 %

Sulfur

0.03 %


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