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Inconel 718 plates are crucial in aerospace, oil and gas, nuclear, and industrial manufacturing applications where high strength, corrosion resistance, and excellent weldability are mandatory. Understanding the factors influencing Inconel 718 plate prices can help procurement managers and engineers make informed decisions. This comprehensive guide explores material characteristics, influencing factors, pricing trends, supplier options, and more with detailed tables for clarity.
Inconel 718 is a precipitation-hardenable nickel-chromium alloy known for high strength, outstanding corrosion resistance, and superb performance at temperatures ranging from cryogenic to 1300°F (705°C). Its unique combination of properties makes it ideal for highly demanding environments.
| Property | Details |
|---|---|
| Material Type | Nickel-Chromium Alloy |
| Strengthening Mechanism | Precipitation Hardening |
| Operating Temperature Range | -423°F to 1300°F (-253°C to 705°C) |
| Corrosion Resistance | Excellent |
| Common Forms | Plate, Sheet, Bar, Pipe |
The superior mechanical and corrosion resistance properties of Inconel 718 stem from its unique chemical composition.
| Element | Content (%) |
|---|---|
| Nickel (Ni) | 50 - 55 |
| Chromium (Cr) | 17 - 21 |
| Iron (Fe) | Balance |
| Niobium (Nb) + Tantalum (Ta) | 4.75 - 5.5 |
| Mo (Molybdenum) | 2.8 - 3.3 |
| Ti (Titanium) | 0.65 - 1.15 |
| Al (Aluminum) | 0.2 - 0.8 |
Inconel 718 is favored for applications requiring high strength over a wide range of temperatures. Here are its key mechanical properties:
| Property | Typical Value |
|---|---|
| Tensile Strength | 135 ksi (930 MPa) |
| Yield Strength | 75 ksi (517 MPa) |
| Elongation | 12% |
| Hardness | 331 HBW |
Multiple variables contribute to the final price of Inconel 718 plates.
| Factor | Impact |
|---|---|
| Raw Material Costs | Nickel market volatility directly affects pricing. |
| Plate Thickness | Thicker plates generally cost more due to material volume and processing. |
| Certification and Testing | Plates meeting aerospace standards (AMS 5596) are more expensive. |
| Manufacturing Method | Hot-rolled plates are cheaper than precision cold-rolled plates. |
| Order Quantity | Large orders usually benefit from bulk discounts. |
| Geographic Region | Shipping and local demand affect the final price. |
