Inconel 718 Alloy Plate

Brief Introduction to the Properties of Inconel 718 Alloy Plate
Inconel 718 is a high-strength nickel-based superalloy plate known for its excellent properties over a wide temperature range, from cryogenic temperatures to approximately 704°C (1300°F). It exhibits high tensile strength, yield strength, and creep-rupture strength, along with good resistance to oxidation and corrosion due to its nickel and chromium content. This age-hardenable alloy is also nonmagnetic and nonsparking, making it suitable for high-performance applications in aerospace, power generation, and other demanding industries.
What are the standards for Inconel alloy 718?
INCONEL alloy 718 (UNS N07718/W.Nr. 2.4668) is a high-strength, corrosion-resistant nickel-chromium alloy with a service temperature range of -200°C to 700°C. This age-hardenable alloy is easy to fabricate, even into complex parts.

Inconel 718 Plates Spec
| ASME and ASTM designation | ASTM B670 / ASME SB670 |
| Producing Thickness | 0.1mm to 12 mm Thk |
| Inconel 718 Plates Sizes range | 1220 mm x 2440 mm, 1000 mm x 2000 mm, 2000 mm x 4000 mm, 2000 mm x 2000 mm, 1500 mm x 3000 mm |
| Standard Finish | Cold rolled sheet (CR), 2D, 2B, SATIN, BA NO(8), Hot rolled plate (HR) |
| Various Form | Rolls, Coils, Flats, Foils, Strip, Ring (Flange), Shim Sheet, Blank (Circle), Plain Sheet |
| Manufacturing Hardness | Quarter Hard, Half Hard, Hard, Spring Hard, Soft etc |
Chemical Composition Of Alloy 718 Sheet
| Ni | Cr | Fe | Mo | Nb+Ta | C | Mn | Si | Ph | S | Ti | Cu | B | Al | Co | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | 50 | 17 | Bal | 2.8 | 4.75 | - | - | - | - | - | 0.65 | - | - | 0.20 | - |
| Max | 55 | 21 | - | 3.3 | 5.50 | 0.08 | 0.035 | 0.35 | 0.015 | 0.015 | 1.15 | 0.30 | 0.0006 | 0.80 | 1.00 |
Mechanical Properties Of UNS N07718 Plate
| 0.2% Proof Stress | Tensile Strength | Elongation | Reduction of area | Hardness |
|---|---|---|---|---|
| MPA | MPA | % | % | HB |
| Min | Min | Min | Min | Min |
| 1034 | 1275 | 12 | 15 | 331 |
Features of Inconel 718 Steel Plate
Excellent mechanical properties-tensile strength, fatigue strength, and creep rupture strength
Extremely high yield strength, creep strength, and rupture strength
Excellent resistance to chloride and sulfide stress corrosion cracking
Resistant to aqueous corrosion and chloride stress corrosion cracking
High-temperature resistance
Age-hardenable, with a unique slow aging response that allows heating and cooling during annealing without risk of cracking
Excellent weldability, resistant to post-weld age cracking

Gnee Steel specializes in the production and sale of various nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel Alloy 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy Alloy 800, Incoloy 800H/HT, Incoloy 825, Monel Alloy 400, Monel K500, and high-temperature alloys. Gnee Steel's products are widely used in aerospace, chemical, electric power, automotive, and nuclear energy applications. We also offer customized alloy solutions tailored to customer needs. For alloy pricing inquiries or customized alloy solutions, please contact us for a quote at ss@gneesteel.com.





