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DESCRIPTION
Nickel Alloy 625 (Inconel® 625/UNS N06625) is a popular nickel-chromium alloy that offers users a high level of strength, ease of fabrication, and excellent corrosion resistance. Nickel Alloy 625 is known for its impressive high temperature strength, resistance to oxidation and a wide range of corrosive elements, and weldability.
PRODUCT FORM
Supra Alloys meets its customers’ specialty metal needs by offering Nickel Alloy 625 in the following product forms:
- Nickel Alloy 625 Bar/Rod (ASTM B446/AMS 5666)
- Nickel Alloy 625 Plate (ASTM B443/AMS 5599)
- Nickel Alloy 625 Sheet (ASTM B443/AMS 5599)
- Nickel Alloy 625 Strip (ASTM B443/AMS 5599)
APPLICATION
High Temperature Alloys like Nickel Alloy 625 can be used in a number of different applications due to its strength, environmental resistance, and high-temperature stability. Supra Alloys’ customers represent many different sectors but most often Nickel Alloy 625 is seen in:
Aerospace applications:
- Aircraft ducting systems
- Engine exhaust
- Thrust reverser systems
Sea water applications:
- Wire rope for mooring cables
- Propeller blades
- Submarine auxiliary propulsion motors
- Sheathing for undersea communication cables
Chemical processing field:
- Heat exchangers
- Valves
Nuclear reactors:
- Reactor-core components
- Control rod components
CHEMICAL COMPOSITION
The chemical composition of Nickel Alloy 625 is as follows:
| Element | Content |
| Nickel, Ni | 60 |
| Chromium, Cr | 22 |
| Molybdenum, Mo | 9 |
| Iron, Fe | 4 |
| Niobium, Nb | 3.5 |
| Titanium, Ti | 0.3 |
| Manganese, Mn | 0.3 |
| Aluminum, Al | 0.3 |
| Silicon, Si | 0.25 |
| Carbon, C | 0.05 |
| Sulfur, S | 0.003 |
| Phosphorous, P | 0.01 |
PHYSICAL PROPERTIES
The physical properties of Nickel Alloys 625 are:
| Properties | Metric | Imperial |
| Density | 8.44 g/cm³ | 0.305 lb/in³ |
| Melting Point | 1330°C | 2425°F |
MECHANICAL PROPERTIES
The following table shows the mechanical properties of Nickel Alloys 625.
| Properties | Metric | Imperial |
| Hardness, Rockwell B (typical annealed) | 95 | 95 |
| Tensile strength (for flat products (<4″ thickness) and seamless tube and pipe) | ≥ 827 MPa | ≥ 120000 psi |
| Yield strength (for flat products (<4″ thickness) and seamless tube and pipe) | ≥ 414 MPa | ≥ 60000 psi |
| Elongation at break (typical annealed) | 45% | 45% |