Incoloy825 (UNS NO8825/W.Nr2.4858)

Product Description:

An alloy comparable to Incoloy 825 [1] alloy - a highly corrosion-resistant nickel-based alloy with high Ni, which has extremely high corrosion resistance to both oxidizing and non-oxidizing acids.

Because Incoloy 825 alloy is rich in Cr, Mo, and Cu, it has good general corrosion resistance to both oxidizing acids and non-oxidizing acids. Especially has extremely high corrosion resistance to sulfuric acid. Due to the high content of Cr, Mo, and Ni, it has excellent pitting corrosion resistance, crevice corrosion resistance, and stress corrosion cracking resistance in chloride environments. Incoloy 825 alloy controls the carbon content to very low levels, is not easily sensitized during welding, and has low susceptibility to intergranular corrosion.

Physical properties:

Density: 8.1g/cm³

Melting point: 1370-1400℃

Extreme chemical composition:

Nickel: 38-46

Chromium: 19.5-23.5

Iron: balance

Carbon: 0.05max

Molybdenum: 2.5-3.5

Manganese: 1.0max

Silicon: 0.5max

Sulfur: 0.03max

Titanium: 0.6-1.2

Phosphorus: 0.02max

Aluminum: 0.2max

Copper: 1.5-3

Characteristic:

1. Good resistance to stress corrosion cracking

2. Good resistance to pitting corrosion and crevice corrosion

3. Very good antioxidant and non-oxidizing hot acid properties

4. Excellent mechanical properties at room temperature and high temperatures up to 550°C

5. Certification for pressure vessels with manufacturing temperatures up to 450°C

Application areas:

825 alloy is widely used in various industrial fields where the operating temperature does not exceed 550°C.

Heating tubes, containers, baskets and chains used in sulfuric acid pickling plants, seawater cooling heat exchangers, marine product pipeline systems, acid gas environment pipelines, heat exchangers, evaporators, washing, dipping tubes, etc. in phosphoric acid production, petroleum Air heat exchangers in refining. Food engineering chemical processes, flame retardant alloys for high pressure oxygen applications.

Form:

Plank stuff, bars, pipes, wires, strips and forgings