The Cr content in Incoloy 800 alloy is usually 15-25%, the nickel content is 30-45%, and contains small amounts of aluminum and. Alloy 800 is in the austenite single phase zone after rapid cooling from high temperature. Therefore, the service state is a single austenite structure.

The alloy has a high chromium content and sufficient nickel content, so it has high high temperature corrosion resistance and is widely used in industry. It has excellent resistance to stress corrosion cracking in chloride, low-concentration NaOH aqueous solutions and high-temperature and high-pressure water, so it is used to manufacture equipment resistant to stress corrosion cracking.

Incoloy800 similar brands

China:0Cr20Ni32AITi

United States:No8800

Japan:NCF800

Germany:X2NiCrAITi3220

Incoloy 800 corrosion resistance: The corrosion resistance is better than general austenitic stainless steel and better than inconel 600 alloy; in the manufacture of corrosion-resistant stress cracking equipment, it is better than Inconel 600 and Monel400 alloy

Incoloy 800 chemical composition Typical values(Weight %)

Incoloy800 physical properties

Melting temperature range: 1350~1400C Specific heat capacity: 455J/ (kgC) Density: 8.0 g/cm3 Magnetic: None

Incoloy800 application areas

1. Chemical industry, nuclear generator

2. Nitric acid cooler, vinegar cracking tube

3. Heat exchange equipment, heat exchange tubes

Incoloy800 variety specifications: Negotiable supply of plates, strips, pipes, and silverware

Incoloy800 standard

ASTM B409...Stainless steel hot steel plate ASTM B514...Stainless steel cold rolled steel plate ASTM B515...Stainless steel/acid-resistant steel cold rolled steel strip Incoloy800 supply status: hot or cold, heat treated, oxidized or Pickling treatment Incoloy800 thermal processing

1. Temperature range 1200C~950C, cooling method is water quenching or rapid air cooling

2. In order to obtain the best performance and creep resistance, solution treatment must be carried out after thermal processing.

3. The material can be directly fed into the furnace that has been heated to 1200 degrees Celsius. After being kept warm for a sufficient time, it can be quickly discharged from the furnace and thermally processed within the specified temperature range. When the material temperature drops below the thermal processing temperature, it needs to be reheated.

Cold working

1. The work hardening rate is greater than that of austenitic stainless steel, so processing equipment needs to be selected. Cold-worked materials should be in a solution heat-treated state, and intermediate annealing should be performed when the amount of cold work is large.

2. If the amount of cold working is greater than 10%, the workpiece needs to be subjected to secondary solid solution treatment. The Incoloy800 welding process is suitable for welding with the same material or other metals using any traditional welding process, such as tungsten electrode inert gas shielded welding, plasma arc welding, manual welding, etc. Sub-arc welding, metal inert gas shielded welding, and melting inert gas shielded welding, among which pulse arc welding is the preferred solution.

If manual arc welding is used, it is recommended to use (Ar+He+H2+CO2) as the shielding gas