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EN 10028-7 Grade X6CrNiMoTi17-12-2 – Solution‑Annealed (AT) – Superior Corrosion‑Resistant Steel

The austenitic steel X6CrNiMoTi17-12-2 is the sensitized by Ti variant of 1.4401. Increased corrosion resistance especially to nonoxidizing acids and halogenated media due to the high Mo-cotent. Increased resistance to intercrystalline corrosion even in sensitized condition due to the Ti-content. Material is unusable for mirror-polishing, in opposition to 1.4404. Allowed for pressure vessel construction up to 300 °C, up to 550 °C if there are no media causing intercrystalline corrosion. The steel is applicated in civil engineering due to its high corrosion resistance and strength for masonry anchorage coupler in concrete, as reinforcing steel for chimney, facades and sanitary engineering. The Mo-alloyed steel is permitted for structural parts (extended approval certificate Nr. Z-30.44.1 of the Institut für Bautechnik Berlin, dated 01/02/1989. In this approval certificate are scheduled material, calculation, construction and monitoring demands. Strength grades E 225 and E355 are common. Application: in chemical apparatus engineering preferable for textile-, sulfite- cellulose, fatty acid- rubber and coloring industry Application temperatur: -200 to 550 °C

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Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.96 - 8 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 A80, transverse

20.0 °C

40 %

Elongation, transverse

20.0 °C

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

520 - 690 MPa

50.0 °C

490 MPa

100.0 °C

440 MPa

150.0 °C

410 MPa

200.0 °C

390 MPa

250.0 °C

385 MPa

300.0 °C

375 MPa

350.0 °C

375 MPa

400.0 °C

375 MPa

450.0 °C

370 MPa

500.0 °C

360 MPa

550.0 °C

330 MPa

Tensile strength, transverse

20.0 °C

520 - 690 MPa

Yield strength Rp0.2

50.0 °C

207 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

220 - 240 MPa

Yield strength Rp1.0

50.0 °C

244 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

260 - 270 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 - 1.8E-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 %

Titanium

0.7 %


Metal

  1. EN 10222-5 X6CrNiMoTi17-12-2 (Solution Annealed) – High Corrosion‑Resistant Stainless Steel
  2. EN 10250-4 X6CrNiMoTi17-12-2 (Solution Annealed) – High-Performance Stainless Steel
  3. EN 10217-7 Grade X6CrNiMoTi17-12-2 Solution-Annealed Steel – High‑Temperature Corrosion Resistance & Structural Strength
  4. EN 10216‑5 X6CrNiMoTi17‑12‑2: Solution‑Annealed Stainless Steel with Enhanced Corrosion Resistance
  5. X6CrNiTiB18-10 Grade – EN 10028-7 Solution Annealed (+AT) High‑Temperature Austenitic Steel
  6. EN 10028-7 Grade X2CrNiMo18-14-3 – Solution-Annealed Stainless Steel with Superior Corrosion Resistance
  7. EN 10028-7 Grade X6CrNiMoTi17-12-2 – Solution‑Annealed (AT) – Superior Corrosion‑Resistant Steel
  8. EN 10272 X6CrNiMoTi17-12-2 Steel – Solution-Annealed, High‑Performance Corrosion Resistance
  9. EN 10028-7 Grade X5CrNi18-10 Solution Annealed (+AT) – High-Performance Austenitic Stainless Steel
  10. EN 10028-7 X6CrNiTi18-10 Solution-Annealed Steel: High-Temp, Corrosion-Resistant, Pressure Vessel & Civil Engineering Grade