Alloy 625 Inconel®: Premium Nickel Alloy for High-Temperature, Corrosion-Resistant Aerospace & Offshore Applications
2.4856 (NiCr22Mo9Nb) is a nickel-chromium-molybdenum alloy with a small niobium and tantalum addition. It is an excellent general purpose material for elevated temperature use in high strength, oxidation problem areas and finds particular application in the aerospace and offshore oil & gas industries. It shows excellent resistance to a variety of corrosive media. It shows the following features and properties:
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 23.0 °C | 8.44 g/cm³ |
Mechanical
| Property | Temperature | Value |
|---|---|---|
Elastic modulus | 23.0 °C | 207 GPa |
Elongation | 23.0 °C | 30 % |
Tensile strength | 23.0 °C | 690 - 830 MPa |
Yield strength Rp0.2 | 23.0 °C | 275 - 415 MPa |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 23.0 °C | 1.28E-5 1/K | for 0-100°C |
Melting point | 1290 - 1350 °C | ||
Thermal conductivity | 23.0 °C | 9.8 W/(m·K) |
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical resistivity | 23.0 °C | 1.32E-6 Ω·m |
Magnetic
| Property | Temperature | Value | Comment |
|---|---|---|---|
Relative magnetic permeability | 23.0 °C | 1 [-] | max. |
Chemical properties
| Property | Value | Comment |
|---|---|---|
Aluminium | 0.2 % | |
Chromium | 22 % | |
Iron | 2 % | |
Molybdenum | 9 % | |
Nickel | 58 - 61 % | |
Niobium | 3.5 % | Nb+Ta |
Tantalum | 3.5 % | Nb+Ta |
Titanium | 0.2 % |
Technological properties
| Property | ||
|---|---|---|
| Application areas | Offshore & marine: Components where exposure to sea water and high mechanical stresses are required, oil and gas production where hydrogen sulphide and elementary sulphur exist at temperature in excess of 150C, flare stacks, hydrocarbon processing from tar-sand and oil-shale recovery projects;Chemical processing: Flue gas desulphurisation plant, flare stacks, offshore sour oil and gas production, waste incineration, phosphoric acid production and nuclear fuel processing | |
| Corrosion properties | Very good corrosion resistance | |
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