Inconel 625
Inconel 625 Alloy
What is Inconel Alloy 625?
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Inconel 625 (UNS N06625 / W.Nr. 2.4856) is a solid solution alloy with high strength and excellent corrosion resistance. It can be used at room temperature or at temperatures as high as 1800°F (982°C).
Inconel 625 adds molybdenum and niobium elements to Inconel 600. Both of these elements are excellent solid solution strengthening elements. They give Inconel 625 higher strength than similar alloys. In addition, molybdenum is very resistant to reductive corrosion. It also gives the alloy better resistance to severe corrosion.
Due to its excellent corrosion resistance, a typical application of Inconel 625 is marine. Its resistance to localized corrosion (pitting and crevice corrosion), chloride ion stress corrosion, and its excellent fatigue strength make it widely used in marine parts such as propeller blades, exhaust pipes, and fasteners. For ambient temperature applications, Inconel 625 is recommended to be delivered annealed.
In addition, Inconel 625 is also widely used in the aerospace field, thanks to its excellent high-temperature tensile properties and creep strength. Through processing and welding, Inconel 625 can be used in components such as aircraft piping systems, engine exhaust systems, fuel and hydraulic lines, and heat exchanger tubes. The high temperature properties of Inconel 625 alloy also make it used in heat treatment equipment and chemical industry. Different from normal temperature applications, in high temperature applications, Inconel 625 is generally delivered as solution annealed.
Inconel 625 Standards
ASTM B444
-Seamless Pipe & Tube
ASTM B705
-Welded Pipe & Tube
ASTM B446
-Rod & Bar
ASTM B443
-Plate, Sheet, Strip & Foil
Inconel 625 Chemical Composition
Inconel 625 Data Sheet
Inconel 625 Equivalent Grades
STANDARD | WERKSTOFF NR. | UNS | GOST | AFNOR | JIS | BS | EN | OR |
Alloy 625 | 2.4856 | N06625 | ХН75МБТЮ | NC22DNB4M | NCF 625 | NA 21 | NiCr22Mo9Nb | ЭИ602 |
Inconel 625 Mechanical Properties
Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
8.4 g/cm3 | 1350 °C (2460 °F) | Psi – 135,000 , MPa – 930 | Psi – 75,000 , MPa – 517 | 42.5 % |
Inconel 625 Physical Properties
Melting Range | Specific Heat, 20°C (J/(g.K)) | Magnetic Permeability (20°C) | Thermal Conductivity, 20°C (W/(m.K)) | Curie Temperature (°C) |
1350 °C (2460 °F) | 410 | <1.001 | 9.9 | -196 |
Inconel 625 Applications
Inconel 625 Related Resources
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