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EN 10095 NiCr22Mo9Nb Soft‑Annealed Alloy (+A) – High‑Temperature Corrosion Resistance

NiCr22Mo9Nb, also contained in VDTÜV-material specification 489 : 1992-03 shows excellent resistance to pitting, crevice, erosion and intercrystalline corrosion. Insensitivity to chloride induced stress corrosion. Favorable resistance to mineral acids, such as nitrous, phosphoric, sulphuric and muriatic acid as well as to alkaline substances and organic acids. Applicable up to 1000°C (highest application temp. in air) due to the excellent high-temperature strength and abrasion properties and favorable resistance to oxidation and carburization. The delivery condition solution annealed should be chosen for application temperatures above 600°C. The material shows an embrittlement tendency in a temperature range of 600 to 800 °C. Use for offshore facilities, production lines for sulphuric, phosphoric, nitrous, hydrofluoric and muriatic acid and for organic acids and alkaline substances as well as for flue gas cleaning systems, for petroleum and natural gas converting plants. The material is approved for pressure vessels in a temperature range from -196 to 450 °C. processing properties: formability: good weldability: good

Properties

General

PropertyTemperatureValue

Density

20.0 °C

8.4 g/cm³

Mechanical

PropertyTemperatureValue

Elastic modulus

20.0 °C

209 GPa

100.0 °C

202 GPa

200.0 °C

195 GPa

300.0 °C

190 GPa

400.0 °C

185 GPa

500.0 °C

178 GPa

600.0 °C

170 GPa

700.0 °C

162 GPa

800.0 °C

153 GPa

900.0 °C

142 GPa

1000.0 °C

128 GPa

Elongation

20.0 °C

25 - 30 %

Elongation A80

20.0 °C

30 %

Hardness, Brinell

20.0 °C

240 [-]

Tensile strength

20.0 °C

760 - 1050 MPa

Yield strength Rp0.2

20.0 °C

345 - 415 MPa

Thermal

PropertyTemperatureValue

Coefficient of thermal expansion

100.0 °C

1.28E-5 1/K

200.0 °C

1.11E-5 - 1.31E-5 1/K

300.0 °C

1.34E-5 1/K

400.0 °C

1.26E-5 - 1.37E-5 1/K

500.0 °C

1.41E-5 1/K

600.0 °C

1.38E-5 - 1.46E-5 1/K

700.0 °C

1.52E-5 1/K

800.0 °C

1.49E-5 - 1.58E-5 1/K

900.0 °C

1.64E-5 1/K

1000.0 °C

1.58E-5 - 1.7E-5 1/K

Max service temperature, long

0 - 1000 °C

Specific heat capacity

20.0 °C

410 - 415 J/(kg·K)

100.0 °C

435 J/(kg·K)

200.0 °C

460 J/(kg·K)

300.0 °C

480 J/(kg·K)

400.0 °C

505 J/(kg·K)

500.0 °C

525 J/(kg·K)

600.0 °C

550 J/(kg·K)

700.0 °C

575 J/(kg·K)

800.0 °C

600 J/(kg·K)

900.0 °C

625 J/(kg·K)

1000.0 °C

650 J/(kg·K)

Thermal conductivity

20.0 °C

9.8 - 10 W/(m·K)

100.0 °C

11.2 W/(m·K)

200.0 °C

12.8 W/(m·K)

300.0 °C

14.4 W/(m·K)

400.0 °C

16.3 W/(m·K)

500.0 °C

17 - 17.3 W/(m·K)

600.0 °C

19.3 W/(m·K)

700.0 °C

21 W/(m·K)

800.0 °C

22.6 W/(m·K)

900.0 °C

24.6 W/(m·K)

1000.0 °C

26.7 W/(m·K)

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

1.28E-6 - 1.29E-6 Ω·m

100.0 °C

1.3E-6 Ω·m

200.0 °C

1.32E-6 Ω·m

300.0 °C

1.33E-6 Ω·m

400.0 °C

1.35E-6 Ω·m

500.0 °C

1.36E-6 Ω·m

600.0 °C

1.36E-6 Ω·m

700.0 °C

1.36E-6 Ω·m

800.0 °C

1.36E-6 Ω·m

900.0 °C

1.35E-6 Ω·m

1000.0 °C

1.32E-6 Ω·m

Chemical properties

PropertyValue

Aluminium

0.4 %

Carbon

0.03 - 0.1 %

Chromium

20 - 23 %

Cobalt

1 %

Copper

0.5 %

Iron

5 %

Manganese

0.5 %

Molybdenum

8 - 10 %

Nickel

58 %

Phosphorus

0.02 %

Silicon

0.5 %

Sulfur

0.015 %

Titanium

0.4 %


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