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Inconel 625

Nickel Ni 58.0%
Chromium Cr 20.0~23.0%
Molybdenum Mo 8.0~10.0%
Iron Fe ≤5.0%
Niobium Nb 3.15~4.15%
Manganese Mn ≤0.5%
Silicon Si ≤0.5%
Titanium Ti ≤0.4%
Aluminium Al ≤0.4%
Cobalt Co ≤0.1%
Phosphorus P ≤0.015%
Sulphur S ≤0.015%
Carbon C ≤0.01%


            

Inconel 625 is an alloy grade with a density of 8.4 g/cm3 and a melting point of 1290-1350°C. It has excellent resistance to inorganic acid corrosion and has excellent corrosion resistance to various corrosive media in oxidation and reduction environments. Alloy 625 shows excellent corrosion resistance in many media. It has excellent resistance to pitting, crevice corrosion, intergranular corrosion and erosion in chloride media.

Alloy 625 shows excellent corrosion resistance in many media. It has 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., and also has alkali and organic acid corrosion resistance in oxidation and reduction environments. Effective resistance to chloride ion reductive stress corrosion cracking. There is almost no corrosion in seawater and industrial gas environments, and it has high corrosion resistance to seawater and salt solutions, even at high temperatures. No sensitivity during welding. It is resistant to carbonization and oxidation in static or circulating environments, and is resistant to corrosion by chlorine-containing gases.

The softened and annealed low-carbon alloy 625 is widely used in the chemical process industry. Its good corrosion resistance and high strength enable it to be used as a thinner structural part. Alloy 625 can be used in situations where it is exposed to seawater and subjected to high mechanical stress.

The minimum mechanical properties of Inconel 625 alloy at room temperature

 
Alloy state Tensile strength
Rm N/mm
Yield Strength
RP0.2 N/mm
Elongation
A5 %
Brinell hardness
HB
Solid solution 827 414 30 ≤220

Inconel 625 Physical properties

Density Melting point Thermal conductivity Specific heat capacity Elastic Modulus Shear modulus Linear expansion coefficient Poisson's ratio
g/cm3 λ/(W/(m•C)) J/(kg·℃)  E/ Gpa  E/ Gpa a/10-6·K-1  
8.44 1290~1350 12.1(100℃) 430 205 79 12.3(20~100℃) 308

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