Inconel 600 Alloy
General Characteristics of Inconel 600 Alloy
Inconel 600 alloy is a nickel-chromium alloy with good high-temperature oxidation resistance and resistance to chloride-ion stress-corrosion cracking, corrosion by high-purity water and caustic corrosion.
| Chemical Analysis | |
|---|---|
| C | Carbon 0.15 max |
| Mn | Manganese 1.00 max |
| S | Sulfur 0.015 max |
| Fe | Iron 6.0/10.0 |
| Si | Silicon 0.50 max |
| Ni | Nickel 72.0 min |
Cr | Chromium 14.0/17.0 |
Cu | Copper 0.50 max |
Applications
The alloy is used for furnace components, chemical and food processing, nuclear engineering and sparking electrodes.
Forging
This alloy was designed to resist deformation at high temperatures, hence it is difficult to forge and the temperature range in which it may be safely forged is narrow.
For this grade of alloy, slight changes in the relative amounts of sulfur and elements that tend to tie up sulfur cause large differences in ductility. Furnace atmospheres and lubricants used in forging the superalloys, as these highly-alloyed materials are known, should be free from sulfur.
Inconel 600 alloy may be forged between 2100/1900ºF (1150/1040ºC.)
Heat treatment
Annealing
Inconel 600 is not an age-hardening alloy, but its corrosion resistance is improved by a soft annealing process following forging. This anneal is carried out between 1700/1900ºF (925/1040ºC) followed by air cooling or water quenching, depending upon the size and the complexity of the part.
Machinability
The alloy may be machined in the forged/rolled or annealed conditions. A large amount of heat is generated during machining, hence cemented carbide tools should be used.
Weldability
The alloy may be welded using shielded fusion or resistance methods.
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