What is AMS 5662 Inconel 718 specifies?
AMS 5662 specifies Inconel 718 (Nickel Alloy 718) as a premium aircraft-quality, precipitation-hardenable nickel alloy with high strength, excellent corrosion/oxidation resistance, and superior creep resistance up to 1300°F (705°C), supplied as bars, forgings, and rings, often used in demanding aerospace (jet engines) and oil/gas (downhole tools) applications requiring strength from cryogenic to high temperatures.
what is AMS 5663 Inconel 718 material?
Inconel 718 (AMS 5663) is a high-strength, nickel-based superalloy known for excellent corrosion resistance and performance in extreme temperatures (cryogenic to 1200°F/650°C), specified by the Aerospace Material Specification (AMS) 5663 for solution-treated and aged bar/forgings, making it ideal for demanding parts in aerospace (turbine engines), oil & gas (downhole tools), and high-stress applications. It offers great tensile/creep strength and good weldability, though it's harder to machine than annealed 718.
Alloy 718:AMS 5662 VS. AMS 5336
Alloy 718 is the same material (UNS N07718), but AMS 5662 is the solution annealed (soft) condition for easier machining, while AMS 5663 is the solution treated and aged (hardened) condition, providing high strength for final aerospace parts, with 5662 often being the starting point for machining before aging to 5663 for performance. The key difference is heat treatment: 5662 is soft/annealed; 5663 is strengthened via age hardening.
Alloy 718:AMS 5662 VS. AMS 5336 Chemical Composition (wt.%)
| Element | AMS 5662 | AMS 5336 |
|---|---|---|
| Nickel (Ni) | 50.0 – 55.0 | 50.0 – 55.0 |
| Chromium (Cr) | 17.0 – 21.0 | 17.0 – 21.0 |
| Iron (Fe) | Balance | Balance |
| Niobium + Tantalum (Nb + Ta) | 4.75 – 5.50 | 4.75 – 5.50 |
| Molybdenum (Mo) | 2.80 – 3.30 | 2.80 – 3.30 |
| Titanium (Ti) | 0.65 – 1.15 | 0.65 – 1.15 |
| Aluminum (Al) | 0.20 – 0.80 | 0.20 – 0.80 |
| Cobalt (Co) | ≤ 1.00 | ≤ 1.00 |
| Carbon (C) | ≤ 0.08 | ≤ 0.08 |
| Manganese (Mn) | ≤ 0.35 | ≤ 0.35 |
AMS 5662 (Bars, Forgings, Rings – Solution Treated & Aged)
| Property | Typical Requirement |
|---|---|
| Tensile Strength | ≥ 1240 MPa (180 ksi) |
| Yield Strength (0.2%) | ≥ 1035 MPa (150 ksi) |
| Elongation | ≥ 12% |
| Reduction of Area | ≥ 15% |
| Hardness | HRC 36 – 45 |
AMS 5336 Solution Treated
| Property | Typical Requirement |
|---|---|
| Tensile Strength | ≥ 1275 MPa (185 ksi) |
| Yield Strength (0.2%) | ≥ 1100 MPa (160 ksi) |
| Elongation | ≥ 10% |
| Reduction of Area | ≥ 12% |
| Hardness | HRC 38 – 45 |
Annealed (Solution-Treated) Condition
| Item | AMS 5662 | AMS 5336 |
|---|---|---|
| Solution Treatment | 940–980 °C (1725–1800 °F), air cool | Same |
| Annealed Hardness | HRC 20 – 25 | HRC 20 – 25 |
| Machinability | Better than aged condition | Better than aged condition |
| Typical Use Before Aging | Rough machining | Pre-form machining |
Inconel 718 suppliers
At GNEE, Inconel 718 is available in various forms to meet diverse industrial needs:
Plates and Sheets (cold rolled and hot rolled)
Bars and Rods (round, square, hexagonal)
Tubes (seamless and welded)
Wires and Strips (for springs, fasteners, electrical applications)
Forgings and Custom Parts (according to drawings or specifications)
Specifications: UNS NO7718, WNR 2.4668, AFNOR NC19FeNb, JIS NCF 718, GOST ХН75МБТЮ, EURONORM NiCr22Mo9Nb, OR ЭИ602, BS NA 21.
Temperature Range: -423°F to 1300°F.
Testing and Documentation: Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, Destructive Testing Reports, Non-Destructive Testing Reports, PMI Test Reports, Visual Inspection Reports, Third-Party Inspection Reports, NABL Certified Laboratory Reports.
Packaging: Wooden crates, bubble wrap, steel strapping, or packaged according to customer requirements.
