What is Inconel 718 Sheet?
Inconel 718 sheet, also known as UNS N07718, is a nickel-based superalloy that gets its strength from a process called precipitation hardening. This usually involves adding niobium (Nb) to form special structures within the material. It's designed for uses that need both high strength and resistance to rust (oxidation), while staying stable over a wide temperature range-from freezing cold conditions up to around 700°C.
When you compare Inconel 718 sheet to other nickel alloys, it really shines because it offers a great mix of strength, is easy to work with, and holds up well for a long time even under heat and pressure. That's why it's a very popular material in places like aerospace, energy, and other demanding industries.
Product Details
Specifications & Technical Parameters
| Standards |
ASTM B670 / ASME SB670 AMS 5596 / AMS 5597 UNS N07718 |
| Thickness | 0.5 mm – 20 mm |
| Width | Up to 1500 mm |
| Length | Coil form or cut-to-length sheets |
| Tensile strength | approx. 1200 MPa |
| Yield strength | approx. 1000 MPa |
| Elongation | 12–20% |
| Hardness | 330–420 HB |
| Surface Condition | Cold rolled, annealed, pickled, bright finish |
Typical chemical composition
| Ni | Cr | Nb + Ta | Mo | Fe |
| 50–55% | 17–21% | 4.75–5.5% | 2.8–3.3% | Balance |
Titanium, aluminum and cobalt as trace strengthening elements
Features & Advantages
Holds Up Well in Very Hot and Cold Conditions
Inconel 718 sheets stay strong and tough, whether they're in really hot or very cold places. This ability to handle both extremes is crucial for parts that experience big temperature swings or constantly changing work environments.02
Resists Bending and Breaking from Heat Over Time
This metal is engineered to keep its shape even when it's hot and under constant load. That's a must-have for things like turbines, engines, and parts dealing with pressure, where they need to stay the same size for a long time.
Resists Rusting and Scaling in Heat
When it gets hot, Inconel 718 sheets create a strong, protective layer on their surface. This keeps the material from breaking down further, meaning you don't have to fix it as often, and it lasts longer in places where there's a lot of oxygen.
Why Choose Us?
In Jiangsu Cunrui Metal Products Co., Ltd., we can really customize Inconel 718 plates for you, and we can also provide different surface finishes. In addition, we can cut the plate into any size you need by various heat treatments. All our packaging is also suitable for export, ready to use.
Our facilities can handle anything from small orders to mass production. We carefully check the size and surface of each piece of paper. In terms of mechanical testing, we follow your specific requirements, and these tests also meet international standards. If you like, we can even arrange for companies like SGS, BV or TUV to conduct third-party inspection.
We have been supplying superalloys for many years, so we have rich experience and can provide good technical advice. Our main goal is to help customers get truly reliable products.
Where Inconel 718 Sheet is Commonly Used
Because of its reliability under stress and temperature, Inconel 718 sheet is often selected for:
- Aerospace engine components (casings, exhaust parts)
- Gas turbine sheet structures
- Heat shields and thermal barriers
- High-performance fasteners and spring elements
- Nuclear and power generation equipment
For buyers, this means fewer material substitutions and higher confidence in long-term service performance.
FAQ
Q: Is Inconel 718 sheet suitable for high-temperature forming?
A: Yes, it has good hot and cold forming characteristics, making it suitable for complex sheet fabrication.
Q: Can you supply aerospace-grade material?
A: Yes, we can provide materials meeting AMS standards with full certification and testing reports.
Q: Do you support custom sheet sizes?
A: Yes, cut-to-size and coil processing are available based on your drawings or specifications.
Q: How do you ensure material authenticity?
A: All materials undergo PMI testing and are supplied with traceable mill certificates.
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