Characteristics Of Inconel 625 Metallographic Structure

Inconel 625 is a face-centered cubic lattice structure. When kept at about 650 ℃ for a long enough time, carbon particles and unstable quaternary phase will be precipitated and converted into stable Ni3 (Nb, Ti) orthorhombic lattice phase. After solid solution strengthening, the molybdenum and niobium components in the nickel-chromium matrix will improve the mechanical properties of the material, but the plasticity will be reduced.
1. It has excellent corrosion resistance to various corrosive media in oxidizing and reducing environments
2. Excellent resistance to pitting and crevice corrosion, and will not produce stress corrosion cracking caused by chloride
3. Excellent corrosion resistance to inorganic acids, such as nitric acid, phosphoric acid, sulfuric acid, hydrochloric acid and mixed acids of sulfuric acid and hydrochloric acid, etc.
4. Excellent resistance to corrosion of various inorganic acid mixed solutions
5. When the temperature reaches 40 ℃, it can show good corrosion resistance in various concentrations of hydrochloric acid solution
6. Good workability and weldability, no cracking sensitivity after welding
7. Manufacture certification of pressure vessel with wall temperature between -196 ～ 450 ℃
8. Certified by the American Society of Corrosion Engineers NACE standard (MR-01-75) to meet the highest standard level VII for use in acid gas environments