Inconel 625
Material Data Sheet
Inconel 625 is a corrosion and oxidation resistant nickel alloy that is used both for both its high strength and its aqueous corrosion resistance. Its outstanding strength and toughness is derived from the stiffening effect of molybdenum and niobium on its nickel-chromium matrix. Although the alloy was developed for high-temperature strength, its highly alloyed composition also provides a significant level of general corrosion resistance. This alloy resists a wide range of severely corrosive environments and is especially resistant to pitting and crevice corrosion.
Inconel 625 has excellent fatigue strength and stress-corrosion cracking resistance to chloride ions.
Some typical applications for Inconel 625 include chemical processing, aerospace, & marine engineering, pollution-control equipment, and nuclear reactors.
| Element | Content (%) |
|---|---|
| Nickel, Ni | 58.0 |
| Chromium, Cr | 20.0 – 23.0 |
| Molybdenum, Mo | 8.0 – 10.0 |
| Iron, Fe | ≤ 5.0 |
| Niobium, Nb | 3.51 – 4.15 |
| Cobalt, Co | ≤ 1.0 |
| Manganese, Mn | ≤ 0.5 |
| Silicon, Si | ≤ 0.5 |
| Titanium, Ti | ≤ 0.4 |
| Aluminum, Al | ≤ 0.4 |
| Carbon, C | ≤ 0.1 |
| Phosphorus, P | ≤ 0.015 |
| Sulfur, S | ≤ 0.015 |
| Properties | Metric | Imperial |
|---|---|---|
| Density | 8.44 g/cc | 0.305 lb/in³ |
| Melting Range | 1290-1350°C | 2350-2460°F |
| Specific Heat | 410 J/kg°C | .0.098 Btu/lb°F |
| Properties | Metric | Imperial |
|---|---|---|
| Tensile Strength, Ultimate | 880 MPa | 128000 psi |
| Tensile Strength, Yield | 460 MPa | 66700 psi |
| Elongation at Break | 50% | 50% |
- Bellows
- Fasteners
- Spray Bars
- Expansion Joints
- Exhaust Systems
- Heat Exchangers
- Combustion Liners
- Furnace Hardware
- Combustion Liners
- Propulsion Motors
- Propellers and Shafts
- Gas Turbine Engine Ducting
- Reactor Core & Control Rod Components
- Downhole Equipment for Corrosive/Sour Service
Key Words:inco 625, inconel 625,ASME SB-443, SB-444, SB-446, SB-564, Boiler Code Sections I, III, VIII, IX; AFNOR NC 22 D Nb; VdTUV 499, AMS 5581, AMS 5599, AMS 5666, AMS 5837; DIN 17744, 17750-17752, 17754; Werkstoff Nr. 2.4856; NACE MR-01-75, UNS N06625; BS 3072, 3074, 3076 (NA21); ASTM B443, ASTM B444, ASTM B446, ASTM B564, ASTM B704, ASTM B705, ASTM B751
