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X1NiCrMoCu31-27-4 (Grade X1) – EN 10088-1 Solution‑Annealed Alloy for Superior Corrosion Resistance

The highly corrosion resistant austenitic material X1NiCrMoCu31-27-4, mat. number 1.4563, is comparable to X 1 NiCrMoCu 31 27 4 acc. to SEW 400 : 1991-02 (invalid, replaced by edition SEW 400 : 1997-02 where this trademark is not contained anymore). The rolled and forged steel is applicable acc. to VdTÜV-material specification 483 : 1996-06 for pressure vessels acc. to TRB 100 and AD-data sheet W 2 and W 10 from -196 to 550 °C., for steam boilers as per TRD 101, TRD 102 and TRD 107 up to 550 °C. as well as for pressure gas vessels acc. TRG 201 and TRG 203 from -196 to 550 °C. Further application in nuclear power engineering as far as nuclear regulations or object-related specifications permit use from -196 to 550 °C. The material is resistant to intercrystalline corrosion up to 400 °C. both in delivery and welded condition. It shows very good resistance to stress corrosion, pitting and crevice corrosion in chloride containing media as well as good resistance to organic and inorganic acids. This material is cold and warm formable. It is within the examined dimensional range fusion weldable by metal arc welding with covered rod electrodes and TIG-welding. Preheating and heat treatment are for material reasosns not necessary. The intermediate temperature should not exceed 150 °C. for thicknesses to be welded of up to 30 mm and 100 °C. for higher thicknesses. Related or higher alloyed welding additions should be preferred with regard to the special corrosion properties of the material (e.g. welding additions acc. to VdTÜV-Wbl 1153).

Properties

General

PropertyTemperatureValue

Density

20.0 °C

8 - 8.08 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

20.0 °C

191 - 195 GPa

100.0 °C

186 - 190 GPa

200.0 °C

179 - 182 GPa

300.0 °C

172 - 174 GPa

400.0 °C

166 GPa

500.0 °C

158 - 159 GPa

Elongation

20.0 °C

20 - 35 %

Elongation A80, transverse

20.0 °C

40 %

Elongation, transverse

20.0 °C

30 - 40 %

Hardness, Brinell

20.0 °C

230 [-]

Hardness, Brinell, trans

20.0 °C

230 [-]

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 - 1100 MPa

Tensile strength, transverse

20.0 °C

500 - 750 MPa

Yield strength Rp0.2

20.0 °C

220 MPa

100.0 °C

190 MPa

150.0 °C

175 MPa

200.0 °C

160 MPa

250.0 °C

155 MPa

300.0 °C

150 MPa

350.0 °C

145 MPa

400.0 °C

135 MPa

450.0 °C

125 MPa

500.0 °C

120 MPa

550.0 °C

115 MPa

Yield strength Rp0.2, transverse

20.0 °C

220 MPa

Yield strength Rp1.0

20.0 °C

250 MPa

100.0 °C

220 MPa

150.0 °C

205 MPa

200.0 °C

190 MPa

250.0 °C

185 MPa

300.0 °C

180 MPa

350.0 °C

175 MPa

400.0 °C

165 MPa

450.0 °C

155 MPa

500.0 °C

150 MPa

550.0 °C

145 MPa

Yield strength Rp1.0, transverse

20.0 °C

250 - 260 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

100.0 °C

1.51E-5 - 1.58E-5 1/K

200.0 °C

1.55E-5 - 1.61E-5 1/K

300.0 °C

1.58E-5 - 1.65E-5 1/K

400.0 °C

1.62E-5 - 1.69E-5 1/K

500.0 °C

1.66E-5 - 1.73E-5 1/K

Max service temperature, long

-196 - 550 °C

Melting point

1230 - 1480 °C

Typical for Austenitic Stainless Steel

Specific heat capacity

20.0 °C

450 - 452 J/(kg·K)

100.0 °C

463 J/(kg·K)

200.0 °C

474 J/(kg·K)

300.0 °C

483 J/(kg·K)

400.0 °C

491 J/(kg·K)

500.0 °C

500 J/(kg·K)

Thermal conductivity

20.0 °C

11.7 - 12 W/(m·K)

100.0 °C

13.2 W/(m·K)

200.0 °C

15 W/(m·K)

300.0 °C

16.8 W/(m·K)

400.0 °C

18.5 W/(m·K)

500.0 °C

20.2 W/(m·K)

Thermal diffusivity

20.0 °C

3.2 mm²/s

100.0 °C

3.5 mm²/s

200.0 °C

3.8 mm²/s

300.0 °C

4.1 mm²/s

400.0 °C

4.5 mm²/s

500.0 °C

4.8 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

1E-6 - 1.04E-6 Ω·m

100.0 °C

1.07E-6 Ω·m

200.0 °C

1.1E-6 Ω·m

300.0 °C

1.13E-6 Ω·m

400.0 °C

1.16E-6 Ω·m

500.0 °C

1.18E-6 Ω·m

Chemical properties

PropertyValue

Carbon

0.02 %

Chromium

26 - 28 %

Copper

0.7 - 1.5 %

Manganese

2 %

Molybdenum

3 - 4 %

Nickel

30 - 32 %

Nitrogen

0.11 %

Phosphorus

0.03 %

Silicon

0.7 %

Sulfur

0.01 %


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