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DIN 17440 X6CrNiMoTi17-12-2 Quenched Steel – High Corrosion Resistance for Chemical Engineering

Properties: - with Ti stabilised variant of 1.4401 - due to the high Mo-content corrosion resistance increased, in particular to not-oxidizing acids and halogen containing media - due to the titanium content the steel possesses a increased resistance to intergranular corrosion - is not high polishable - application temperature: -200 to 550 °C Application: - in the chemical apparatus engineering preferably for the textile, sulfite, cellulose, fatty acid, rubber and dye industry - for the construction of pressure tanks to 300 °C certified, until 550 °C, if no disintegration of grains-causative media influence - architecture for brick-work anchorages, is used as reinforcing steels for fire-places, fronts and sanitary engineering - is certified for construction units with bearing function (extended licence notice No. Z-30.44.1 of Institut für Bautechnik Berlin, of the 1.Februar 1994) - prevailing strength grades E 225, E 355

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Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.96 - 7.98 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

-100.0 °C

206 GPa

20.0 °C

196 - 200 GPa

100.0 °C

190 - 194 GPa

200.0 °C

182 - 186 GPa

300.0 °C

174 - 179 GPa

400.0 °C

166 - 172 GPa

500.0 °C

158 - 165 GPa

600.0 °C

150 GPa

700.0 °C

142 GPa

800.0 °C

134 GPa

900.0 °C

127 GPa

1000.0 °C

120 GPa

Elongation

20.0 °C

35 %

Elongation, transverse

20.0 °C

30 - 40 %

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

500 - 730 MPa

Tensile strength, transverse

20.0 °C

500 - 730 MPa

Yield strength Rp0.2

20.0 °C

210 MPa

50.0 °C

202 MPa

100.0 °C

185 MPa

150.0 °C

177 MPa

200.0 °C

167 MPa

250.0 °C

157 MPa

300.0 °C

145 MPa

350.0 °C

140 MPa

400.0 °C

135 MPa

450.0 °C

131 MPa

500.0 °C

129 MPa

550.0 °C

127 MPa

Yield strength Rp0.2, transverse

20.0 °C

210 MPa

Yield strength Rp1.0

20.0 °C

245 MPa

50.0 °C

234 MPa

100.0 °C

218 MPa

150.0 °C

206 MPa

200.0 °C

196 MPa

250.0 °C

186 MPa

300.0 °C

175 MPa

350.0 °C

169 MPa

400.0 °C

164 MPa

450.0 °C

160 MPa

500.0 °C

158 MPa

550.0 °C

157 MPa

Yield strength Rp1.0, transverse

20.0 °C

245 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

1.65E-5 - 1.67E-5 1/K

200.0 °C

1.72E-5 - 1.75E-5 1/K

300.0 °C

1.77E-5 - 1.85E-5 1/K

400.0 °C

1.81E-5 - 1.85E-5 1/K

500.0 °C

1.84E-5 - 1.9E-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

900.0 °C

1.97E-5 1/K

1000.0 °C

2E-5 1/K

Max service temperature, long

-200 - 550 °C

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)

900.0 °C

565 J/(kg·K)

1000.0 °C

571 J/(kg·K)

Thermal conductivity

20.0 °C

13.3 - 15 W/(m·K)

100.0 °C

14.9 W/(m·K)

200.0 °C

16.5 W/(m·K)

300.0 °C

18.1 W/(m·K)

400.0 °C

19.5 W/(m·K)

500.0 °C

21 W/(m·K)

600.0 °C

22.4 W/(m·K)

700.0 °C

23.8 W/(m·K)

800.0 °C

25.2 W/(m·K)

Thermal diffusivity

20.0 °C

3.5 mm²/s

100.0 °C

3.8 mm²/s

200.0 °C

4 mm²/s

300.0 °C

4.3 mm²/s

400.0 °C

4.5 mm²/s

500.0 °C

4.7 mm²/s

600.0 °C

4.8 mm²/s

700.0 °C

5.1 mm²/s

800.0 °C

5.4 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

7.5E-7 - 7.91E-7 Ω·m

100.0 °C

8.45E-7 Ω·m

200.0 °C

9.19E-7 Ω·m

300.0 °C

9.77E-7 Ω·m

400.0 °C

1.03E-6 Ω·m

500.0 °C

1.08E-6 Ω·m

600.0 °C

1.12E-6 Ω·m

700.0 °C

1.15E-6 Ω·m

800.0 °C

1.18E-6 Ω·m

Chemical properties

PropertyValue

Carbon

0.08 %

Chromium

16.5 - 18.5 %

Manganese

2 %

Molybdenum

2 - 2.5 %

Nickel

10.5 - 13.5 %

Phosphorus

0.05 %

Silicon

1 %

Sulfur

0.015 - 0.03 %

Titanium

0.7 %


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