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DIN 17440 Grade X6CrNiTi18-10 Quenched (+Q) Steel – Titanium-Stabilized, High-Temperature, Corrosion-Resistant

Properties: - is the with titanium stabilised variant of 1.4301 - thus after welding also with material thicknesses > 6 mm resistant to intergranular corrosion - due to the Ti-additive the steel is not high polishable - is certified for the construction of pressure tanks to 300 °C, if no disintegration of grains-releasing media are present, then up to 550°C is possible - the strength grades E 225, E 355 are usual. Application: - employment in large extent for welded parts in the chemical apparatus engineering - food, luxuries, fat and soap industry - in the film and photo industry, in leather and sugar factories and for houseware - in architecure for construction units with supporting function is certified (extended licence notice No. Z-30.44.1 of Institut für Bautechnik Berlin from 1 February 1994)

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Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.9 - 7.93 g/cm³

Mechanical

PropertyTemperatureValue

Elastic modulus

-100.0 °C

206 GPa

20.0 °C

196 - 200 GPa

95.0 °C

193.05 GPa

100.0 °C

190 - 194 GPa

150.0 °C

188.23 GPa

200.0 °C

182 - 186 GPa

205.0 °C

182.71 GPa

260.0 °C

177.88 GPa

300.0 °C

174 - 179 GPa

315.0 °C

174.44 GPa

370.0 °C

168.92 GPa

400.0 °C

166 - 172 GPa

425.0 °C

164.1 GPa

485.0 °C

159.96 GPa

500.0 °C

158 - 165 GPa

540.0 °C

155.13 GPa

595.0 °C

151 GPa

600.0 °C

150 GPa

650.0 °C

146.17 GPa

700.0 °C

142 GPa

705.0 °C

140.65 GPa

760.0 °C

135.83 GPa

800.0 °C

134 GPa

815.0 °C

131.69 GPa

900.0 °C

127 GPa

1000.0 °C

120 GPa

Elongation

20.0 °C

35 - 40 %

Elongation A80

20.0 °C

35 %

Elongation A80, transverse

20.0 °C

42 %

Elongation, transverse

20.0 °C

30 - 42 %

Poisson's ratio

20.0 °C

0.29 [-]

95.0 °C

0.3 [-]

150.0 °C

0.29 [-]

205.0 °C

0.29 [-]

260.0 °C

0.3 [-]

315.0 °C

0.3 [-]

370.0 °C

0.3 [-]

425.0 °C

0.31 [-]

485.0 °C

0.32 [-]

540.0 °C

0.32 [-]

595.0 °C

0.34 [-]

650.0 °C

0.34 [-]

705.0 °C

0.33 [-]

760.0 °C

0.33 [-]

815.0 °C

0.35 [-]

Shear modulus

20.0 °C

77.22 GPa

95.0 °C

74.46 GPa

150.0 °C

73.08 GPa

205.0 °C

71.02 GPa

260.0 °C

68.26 GPa

315.0 °C

66.88 GPa

370.0 °C

64.81 GPa

425.0 °C

62.74 GPa

485.0 °C

60.67 GPa

540.0 °C

58.61 GPa

595.0 °C

56.54 GPa

650.0 °C

54.47 GPa

705.0 °C

53.09 GPa

760.0 °C

51.02 GPa

815.0 °C

48.95 GPa

Tensile strength

20.0 °C

500 - 730 MPa

Tensile strength, transverse

20.0 °C

500 - 730 MPa

Yield strength Rp0.2

20.0 °C

200 MPa

50.0 °C

190 MPa

100.0 °C

176 MPa

150.0 °C

167 MPa

200.0 °C

157 MPa

250.0 °C

147 MPa

300.0 °C

136 MPa

350.0 °C

130 MPa

400.0 °C

125 MPa

450.0 °C

121 MPa

500.0 °C

119 MPa

550.0 °C

118 MPa

Yield strength Rp0.2, transverse

20.0 °C

200 MPa

Yield strength Rp1.0

20.0 °C

235 MPa

50.0 °C

222 MPa

100.0 °C

208 MPa

150.0 °C

195 MPa

200.0 °C

185 MPa

250.0 °C

175 MPa

300.0 °C

165 - 167 MPa

350.0 °C

161 MPa

400.0 °C

156 MPa

450.0 °C

152 MPa

500.0 °C

149 MPa

550.0 °C

147 MPa

Yield strength Rp1.0, transverse

20.0 °C

235 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

1.6E-5 - 1.67E-5 1/K

200.0 °C

1.7E-5 - 1.72E-5 1/K

300.0 °C

1.7E-5 - 1.77E-5 1/K

400.0 °C

1.8E-5 - 1.81E-5 1/K

500.0 °C

1.8E-5 - 1.84E-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

0 - 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

14.3 - 15 W/(m·K)

100.0 °C

15.8 W/(m·K)

200.0 °C

17.5 W/(m·K)

300.0 °C

19 W/(m·K)

400.0 °C

20.5 W/(m·K)

500.0 °C

21.9 W/(m·K)

600.0 °C

23.3 W/(m·K)

700.0 °C

24.6 W/(m·K)

800.0 °C

26 W/(m·K)

900.0 °C

27.4 W/(m·K)

1000.0 °C

28.8 W/(m·K)

Thermal diffusivity

20.0 °C

3.8 mm²/s

100.0 °C

4 mm²/s

200.0 °C

4.2 mm²/s

300.0 °C

4.6 mm²/s

400.0 °C

4.8 mm²/s

500.0 °C

4.9 mm²/s

600.0 °C

5 mm²/s

700.0 °C

5.3 mm²/s

800.0 °C

5.6 mm²/s

900.0 °C

5.9 mm²/s

1000.0 °C

6 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

7.1E-7 - 7.3E-7 Ω·m

100.0 °C

7.76E-7 Ω·m

200.0 °C

8.49E-7 Ω·m

300.0 °C

9.14E-7 Ω·m

400.0 °C

9.71E-7 Ω·m

500.0 °C

1.02E-6 Ω·m

600.0 °C

1.07E-6 Ω·m

700.0 °C

1.1E-6 Ω·m

800.0 °C

1.14E-6 Ω·m

900.0 °C

1.17E-6 Ω·m

1000.0 °C

1.19E-6 Ω·m

Chemical properties

PropertyValue

Carbon

0.08 %

Chromium

17 - 19 %

Manganese

2 %

Nickel

9 - 12 %

Phosphorus

0.05 %

Silicon

1 %

Sulfur

0.015 - 0.03 %

Titanium

0.7 %


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