Properties of Alloy 600?

Alloy 600 is a nickel-chromium alloy with good corrosion resistance to a wide range of acids and bases, even at high temperatures. It withstands oxidation and carburization in high-temperature environments. Therefore, it is often used in heat exchangers, steam generators, combustion chambers, and other applications requiring high temperatures and corrosion resistance. When welding Alloy 600, CEWELD® NiCro 600 can be used as filler material. This ensures consistent corrosion resistance and mechanical properties in the weld joint. Welding processes like TIG welding (GTAW) and MIG welding (GMAW) are commonly used.

Typical chemical composition in %:

Ni: 72
Cr: 14-17
Fe: 6-10

Small amounts of other elements such as carbon, manganese, sulfur, silicon, and copper

Corrosion Resistance of Alloy 600:

Acidic Corrosion: Alloy 600 exhibits excellent resistance to corrosion by acids such as sulfuric acid and hydrochloric acid at different concentrations and temperatures.

Alkaline Corrosion: It also resists corrosion by alkaline solutions, including sodium hydroxide (caustic soda) and potassium hydroxide.

Oxidation Resistance: Alloy 600 maintains good resistance to oxidation at high temperatures, making it suitable for applications in elevated-temperature environments.

Chloride-Ion Stress Corrosion Cracking (SCC) Resistance: It shows good resistance to chloride-ion stress corrosion cracking, a type of corrosion that occurs in the presence of chlorides at elevated temperatures.

Water Corrosion: Alloy 600 is resistant to corrosion in freshwater and steam.

It's important to note that while Alloy 600 provides excellent corrosion resistance, its performance can be affected by various factors such as temperature, concentration of corrosive substances, and mechanical stresses. Additionally, in certain severe environments, a more specialized alloy with enhanced corrosion resistance may be recommended.