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625 corrosion resistant alloy You are here: Home — 625 Corrosion Resistant Alloy

Inconel 625 (American Standard UNS N06625 / German Standard W.Nr.2.4856)
Chemical composition of Inconel 625:
alloy
%
nickel
chromium
molybdenum
Niobium Tantalum
iron
aluminum
titanium
carbon
manganese
silicon
copper
phosphorus
sulfur
625
Smallest
58
20
8
3.15
maximum
twenty three
10
4.15
5
0.4
0.4
0.1
0.5
0.5
0.5
0.015
0.015
Physical properties of Inconel 625:
density
8.4 g / cm3
Melting point
1290-1350 ℃
Inconel 625 solid solution state, mechanical properties of the alloy at room temperature:
Alloys and states
Tensile strength σb (Mpa)
Yield strength σ0.2 (Mpa)
Elongation
A5%
hardness
HB
625
≥760
≥345
≥30
≤220
This alloy has the following characteristics:
625 alloy has good processability and weldability, without crack sensitivity after welding. Shows excellent corrosion resistance in many media. Excellent resistance to pitting, crevice corrosion, intergranular corrosion and erosion in chloride media. It has good resistance to inorganic acid corrosion, such as nitric acid, phosphoric acid, sulfuric acid, hydrochloric acid, etc. At the same time, it also has resistance to alkali and organic acid corrosion in the oxidation and reduction environment. Effective resistance to chloride-reducing stress corrosion cracking. It produces almost no corrosion in seawater and industrial gas environments, and has high corrosion resistance to seawater and salt solutions, even at high temperatures. No sensitivity during welding. Resistant to carbonization and oxidation in static or cyclic environments, and resistant to corrosion by chlorine-containing gases
Metallographic structure of Inconel 625:
625 is a face-centered cubic lattice structure. After holding at about 650 กใ C for a sufficient time, the carbon particles and unstable quaternary phase are precipitated and transformed into a stable Ni3 (Nb, Ti) orthorhombic lattice phase. After solution strengthening, the molybdenum and niobium in the nickel-chromium matrix will improve the mechanical properties of the material, but the plasticity will be reduced.
Inconel 625 application areas are:
The softened and annealed low carbon alloy 625 is widely used in the chemical process industry. Its good corrosion resistance and high strength make it a thinner structural component. 625 alloy can be used in places that are exposed to seawater and subjected to high mechanical stress. Typical application areas:
1. Chlorinated organic chemical process components, especially when using acid chloride catalysts
2. digesters and bleaching tanks for the pulp and paper industry
3. Absorption tower, reheater, flue gas inlet baffle, fan (wet), agitator, deflector and flue in the flue gas desulfurization system
4. Equipment and components used in the manufacture of sour gas environments
5.Acid and acetic anhydride reaction generator
6. Sulfuric acid condenser
Varieties of products produced by our company:
Cold and hot plate, strip, pipe, wire, forged rod, hot rolled rod, machined product
Copyright ? 2013 Jiangsu Xinhua Alloy Co., Ltd. Copyright Statement Su ICP No. 14001587
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