1. It has very excellent corrosion resistance to the oxidation and a variety of corrosive medium in reduction environment.
2. Excellent resistance to point corrosion and crevice corrosion, and it does not cause stress corrosion cracking due to chloride.
3. Excellent resistance to inorganic acid corrosion, such as nitric acid, phosphoric acid, sulfuric acid, hydrochloric acid, sulfuric acid and hydrochloric acid mixed acid etc.
4. The excellent corrosion resistance ability to mixed solution of inorganic acid.
5. When the temperature is up to 40 degrees, it can exhibit good corrosion resistance in hydrochloric acid solution with different concentration.
6. Good workability and weldability without susceptibility to post weld cracking.
7. It has the wall temperature in -196 to 450 degrees for pressure vessel manufacturing certification.
8. The National Association of corrosion engineers NACE standards (MR-01-75) in accordance with the highest standards of grade VII environment using acid gas.
W.Nr.2.4856 application area:
Organic chemical process of chloride containing components, especially in the use of acid chloride catalyst.
Used in the manufacture of pulp and paper industry digester and bleaching.
The absorption tower, flue gas desulfurization system and heater flue gas inlet baffle, fan (damp), mixer, guide plate and flue.
Used in the manufacture of equipment and components used in acid gas environment.
Acetic acid and acetic anhydride reaction generator.
Sulfuric acid condenser.
Similar grades:
GH3625, GH625 (Chinese), NC 22, W.Nr.2.4856 DNb (France), NiCr22Mo9Nb (Germany), NA 21 (UK) Inconel625, UNS NO6625 (USA) NiCr22Mo9Nb (ISO).
Physical property:
W.Nr.2.4856 density
The density is =8.4g/cm3
W.Nr.2.4856 melting temperature range
The melting temperature range is 1290~1350 degrees.
W.Nr.2.4856 welding:
It is suitable for the use of any traditional welding process of welding, such as gas tungsten arc welding, plasma arc welding, manual arc welding, metal inert gas welding, MIG welding.
The welding materials shall be solid solution treatment state, remove oxide, oil and various mark prints. The welding operation shall be carried out in the provisions of the low heat input, interpass temperature does not exceed 150 degrees. Before and after welding heat treatment is no longer needed.
