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Inconel® 625 Foil/Sheet
Available Configurations
Properties common to all products in this list
| Thickness | Size | Temper ⓘ | Other Variant |
|---|---|---|---|
| 0.025 mm (foil) to 5 mm (sheet) | 10 x 10 mm to 1000 x 1000 mm | As rolled Annealed |
Light Tight (Pinhole Free) |
Need custom configurations? Please contact us.
Key Features
Inconel® 625 Foil (Ni 61/Cr 22/Mo 9/Fe 5, UNS N06625) is a solid-solution-strengthened nickel-chromium-molybdenum alloy in thin flat sheet form, supplied in the Annealed temper:
Broadest Corrosion Resistance Profile of Any Commercially Available High-Temperature Alloy Foil
625 covers the broadest corrosion resistance profile of any commercially available high-temperature alloy foil, from cryogenic through to approximately 1,095 °C in oxidizing environments, with outstanding resistance to pitting, crevice corrosion, and chloride SCC.
Cr-Ni-Mo Passive Film: Chloride Resistance Far Exceeding Austenitic Stainless Steels
The 9% molybdenum and niobium additions stabilize a Cr-Ni-Mo passive film that provides corrosion resistance in chloride environments significantly exceeding that of austenitic stainless steels, making 625 foil the reference material for the most demanding corrosive service.
Annealed Temper: Maximum Ductility and Best Corrosion Resistance Profile
The Annealed temper delivers maximum ductility and the best corrosion resistance profile of any temper, supporting demanding forming operations and ensuring the passive film is in its most stable state.
Essentially Non-Magnetic: Curie Temperature at or Below −196 °C
625 is essentially non-magnetic with a Curie temperature at or below −196 °C throughout its service range, qualifying foil for use in magnetically sensitive aerospace and instrumentation applications.
Tensile Strength 950 MPa
The 950 MPa tensile strength in the As Rolled condition confirms sufficient mechanical performance for barrier and structural foil applications alongside the alloy’s defining corrosion resistance.
Industrial Applications
Inconel® 625 Foil is used across marine, aerospace, chemical processing, and oil and gas industries wherever thin flat sheet must provide the highest available corrosion resistance in aggressive chloride, seawater, and acid environments:
- ✦ Barrier Layers in Corrosive Fluid Handling and Chemical Reactor Systems
- Used for barrier layers in corrosive fluid handling and chemical reactor systems, where the Cr-Ni-Mo passive film’s chloride resistance far exceeding that of austenitic stainless steels qualifies 625 for the most aggressive chemical service.
- ✦ Aerospace Sealing Elements in Salt-Fog and Seawater Environments
- Applied as aerospace sealing elements in salt-fog and seawater environments, where essentially non-magnetic character and outstanding chloride corrosion resistance combine to meet the demanding environmental and electromagnetic requirements of aerospace systems.
- ✦ Marine Exhaust Liner and Heat Exchanger Components
- Used as marine exhaust liner and heat exchanger components, where resistance to seawater pitting, crevice corrosion, and high-temperature oxidizing environments sustains performance in the most aggressive marine service conditions.
- ✦ Cladding and Barrier Foil in Oil and Gas Process Equipment
- Applied as cladding and barrier foil in oil and gas process equipment exposed to acidic or chloride-containing fluids, where 625’s passive film stability provides reliable barrier performance throughout the equipment service life.
- ✦ Electrochemical Corrosion, Passive Film and Hot Corrosion Research
- Used for electrochemical corrosion characterization in aggressive chloride and acid media, passive film stability studies, high-temperature oxidation and hot corrosion investigations, and as a reference corrosion-resistant alloy foil for surface treatment and coating adhesion evaluation.
Material Properties
| Element | Value |
|---|---|
| Hardness - Brinell | 175-240 |
| Elongation at break( % ) | <40 |
| Modulus of elasticity( GPa ) | 147-210 |
| Tensile strength( MPa ) | 950 |
| Element | Value |
|---|---|
| Initial permeability | 1.0006 |
| Curie temperature( C ) | -196 |
| Element | Value |
|---|---|
| Electrical resistivity( µOhmcm ) | 129 |
| Temperature coefficient( K⁻¹ ) | - |
| Element | Value |
|---|---|
| Melting point( C ) | 1290-1350 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 410@23°C |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 9.8@23°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 12.8@20-100°C |
| Element | Value |
|---|---|
| Density( gcm⁻³ ) | 8.44 |
Tolerances
| Thickness | <0.01mm | ±25% |
|---|---|---|
| Thickness | 0.01mm - 0.05mm | ±15% |
| Thickness | >0.05mm | ±10% |
| Linear dimension | <100mm | ±1mm |
| Linear dimension | >=100mm | +2 / -1% |