Materials / Nickel-Based Superalloy
Inconel 718 Material for Forged, Cast, and Machined Components
Inconel 718, also known as UNS N07718, is a nickel-based superalloy used for components that require high strength, corrosion resistance, oxidation resistance, and performance in demanding aerospace, energy, oil and gas, turbocharger, and industrial environments.
Material Snapshot
| Material | Inconel 718 |
| UNS | N07718 |
| Category | Nickel-Based Superalloy |
| Common Routes | Forging / Casting / CNC Machining |
| Applications | Aerospace / Energy / Oil & Gas / Turbocharger |
Material Overview
What Is Inconel 718?
Inconel 718 is a precipitation-hardenable nickel-chromium alloy commonly selected for components that need strength, fatigue resistance, corrosion resistance, oxidation resistance, and stability in demanding operating conditions.
Within the ForceBeyond website framework, this page is a material hub. It helps customers understand where Inconel 718 fits, which manufacturing routes are commonly used, and which solution pages are most relevant.
Why Engineers Specify Inconel 718
- High strength
- Fatigue resistance
- Creep resistance
- Oxidation resistance
- Corrosion resistance
- Heat resistance
- Aerospace use
- Energy applications
Manufacturing Routes
How ForceBeyond Supports Inconel 718 Projects
Inconel 718 can be manufactured through multiple routes depending on geometry, mechanical requirements, machining allowance, inspection needs, and production quantity.
Route 01
Inconel 718 Forging
Used for high-stress components such as disks, rings, shafts, and structural parts requiring grain flow and mechanical strength.
Route 02
Inconel 718 Casting
Used for complex geometries where casting can reduce machining and support shape complexity.
Route 03
Inconel 718 Machining
Used for final tolerances, holes, threads, mating surfaces, finished geometry, and post-forging or post-casting features.
Technical Reference
Inconel 718 Technical Profile
Material requirements should always be confirmed against the customer drawing, specification, heat treatment condition, section size, inspection scope, and end-use application.
Common Standards
- UNS: N07718
- General: ASTM B637
- Aerospace: AMS 5662 / AMS 5663
- Oil & Gas: NACE MR0175 / ISO 15156 when applicable
Final applicable standards depend on drawing requirements, material condition, customer specifications, heat treatment, and inspection scope.
Representative Material Characteristics
| Characteristic | Why It Matters |
|---|---|
| High Strength | Supports demanding mechanical loads and high-stress components. |
| Fatigue Resistance | Important for rotating parts, aerospace hardware, and cyclic loading. |
| Creep Resistance | Useful for elevated-temperature applications. |
| Corrosion Resistance | Supports oil and gas, energy, and demanding industrial environments. |
| Machinability Planning | Requires careful tooling, process planning, and finishing strategy. |
This table is for page-level material guidance only. Final performance requirements should follow the applicable customer specification and required material condition.
Chemical Composition (UNS N07718 Limit %)
| Element | Typical Limit (%) |
|---|---|
| Nickel (Ni) | 50.00 – 55.00 |
| Chromium (Cr) | 17.00 – 21.00 |
| Iron (Fe) | Balance |
| Niobium (Nb) | 4.75 – 5.50 |
| Molybdenum (Mo) | 2.80 – 3.30 |
| Titanium (Ti) | 0.65 – 1.15 |
| Aluminium (Al) | 0.20 – 0.80 |
Chemical composition ranges should be verified against the applicable material specification, purchase order, and mill certificate.
Typical Mechanical Properties (Room Temp, Precipitation Hardened)
| Property | Metric | Imperial | Reference Condition |
|---|---|---|---|
| Tensile Strength (Ultimate) | ≥ 1240 MPa | ≥ 180 ksi | Heat Treated, AMS 5663 |
| Yield Strength (0.2% Offset) | ≥ 1030 MPa | ≥ 150 ksi | Precipitation Hardened |
| Elongation at Break | ≥ 12% | ≥ 12% | Standard gauge length |
| Max Operating Temp | 650°C | 1200°F | High-strength structural service limit |
Mechanical property values are typical references only. Actual values depend on specification, heat treatment, product form, section size, test direction, and customer requirements.
Applications
Where Inconel 718 Is Used
Inconel 718 is often selected where the component faces mechanical stress, elevated temperature, fatigue loading, or corrosive operating environments.
- Aerospace — turbine disks, rings, compressor parts, and hot-section components
- Energy — high-temperature and high-stress power generation components
- Oil & Gas — corrosion-resistant parts for demanding service environments
- Automotive — turbocharger and high-performance engine-related components
- Industrial Machinery — high-strength components for specialized equipment
Connected Pages
Related Material, Solution, and Product Pages
These pages connect Inconel 718 material selection with specific manufacturing routes, product types, and nearby material families.
Inconel 718 Forging
Material-process solution for high-stress forged Inconel 718 components.
Inconel 718 Casting
Casting solution for complex Inconel 718 geometries and applications.
Inconel 718 Machining
Machining support for final tolerances, features, holes, and finished geometry.
Inconel 625
Related nickel alloy material often selected for corrosion-resistant applications.
Superalloys
Material family page for high-temperature and high-performance alloy applications.
Turbocharger Shaft Wheel
Product category connected with high-temperature and superalloy manufacturing requirements.
FAQ
Inconel 718 FAQ
What is the nickel content of Inconel 718?
Inconel 718 typically contains 50.00% to 55.00% nickel by composition limit, along with chromium, iron, niobium, molybdenum, titanium, and aluminium. Final composition should be verified against the applicable material specification and mill certificate.
What are the typical tensile strengths of forged Inconel 718?
For precipitation-hardened Inconel 718, typical room-temperature reference values may include ultimate tensile strength of at least 1240 MPa, or 180 ksi, and 0.2% offset yield strength of at least 1030 MPa, or 150 ksi. Actual values depend on the specification, heat treatment, section size, and test direction.
What are the key standards for aerospace-grade Inconel 718?
Aerospace components commonly reference AMS 5662 for solution-annealed material and AMS 5663 for precipitation-hardened material. Other project-specific requirements may also apply based on customer drawings, heat treatment, inspection scope, and end-use application.
Can Inconel 718 be investment cast?
Yes. Inconel 718 can be investment cast for complex-shaped components used in aerospace gas turbine engines, turbochargers, and other high-performance applications where machining from solid may be inefficient or uneconomical.
What information is needed for an Inconel 718 quote?
For an Inconel 718 quote, customers should provide drawings, material specification, manufacturing route preference, quantity, tolerances, heat treatment requirements, machining needs, inspection requirements, surface finish requirements, and application details.
Request an Inconel 718 Component Quote
Send your drawings, material specification, quantity, process requirements, and inspection needs. ForceBeyond can help evaluate the best manufacturing route for your Inconel 718 component.