Alloy 600
Alloy 600 is a non-magnetic nickel-chromium-iron high temperature alloy with an excellent combination of high strength, hot and cold workability and high corrosion resistance. It has good high temperature strength up to 1150ºC and displays freedom from stress corrosion.
The high chromium content of Alloy 600 raises its oxidation resistance, whilst the high nickel content provides good corrosion resistance under reducing conditions. The alloy also displays very good levels of resistance to chloride stress-corrosion cracking, ammonia, pitting in fresh and salt water, exhaust gasses and most organic acids and compounds. Alloy 600 also performs well at cryogenic temperatures.
Related Specifications of Alloy 600
- NA14
- N06600
- BS3076
- ASTM B166
- 2.4816
- NCr15Fe (FR)
- NiCr15Fe (EU)
- NiCr15Fe8 (DE)
Nominal Composition of Alloy 600
Ni 72.0%min, Cr 14%~17%, Fe 6.0%~10%
Mechanical Properties of Alloy 600
| Ultimate Tensile Strength (N/mm²) | Proof Stress (N/mm²) | Elongation (%) | Hardness (HB) |
|---|---|---|---|
| 550 | 240 | 30 |
Microstructure
Alloy 600 has a face-centered cubic structure and is a stable, austenitic solid-solution alloy
Characters
A good corrosion resistance to the media of reducing, oxidation and nitridation
Virtual immunity to chloride-ion stress-corrosion cracking even at elevated temperatures;
Very good resistance ti high-temperature corrosion in drychlorine and hydrogen chloride
Corrosion Resistance
The composition of Alloy 600 enables it to resist a variety of corrosives. The chromium content of the alloy makes it
superior to commercially pure nickel under oxidizing condition, and its high nickel content enables it to retain
considerable resistance under reducing condition. The nickel content also provides excellent resistance to alkaline
solutions
The alloy has fair resistance to strongly oxidizing acid solution. However, the oxidizing effect of dissolved air alone is not
sufficient to insure complete passivity and freedom from attack by air-saturated mineral acids and certain concentrated
organic acids.
Applications
1. Pressurised-water-reactor steam-generator tube;
2. Heat exchangers for sodium hydroxide
3. Component used in the manufacture of photographic materials and film processing
4. Oxychlorinator internals in vinyl chloride production
5. Strip for flight recorders.
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