Gnee Steel produces Inconel 718 products in various specifications, always adhering to the highest standards. In addition, we also deal in other specialty alloys and are recognized as one of the largest stockists of low-expansion and controlled-expansion alloys in China. Interested in learning more about Inconel 718 plates, our products, or obtaining a quote? Contact our team today to discuss your requirements.
Inconel 718 alloy plate properties and composition
Inconel 718 alloy plate properties and composition
Inconel 718 plate is a high-strength, corrosion-resistant nickel-chromium-iron precipitation-hardening superalloy (containing 50-55% nickel and 17-21% chromium) with excellent weldability, creep rupture strength up to 1300°F (700°C), and good post-weld crack resistance. It is primarily used in aerospace, rocket engines, and nuclear reactors, and its plate form is ideal for manufacturing high-stress, high-temperature components.
At what temperature does Inconel 718 oxidize?
1223 K to 1573 K
In a normal atmospheric environment, the oxidation rate of Inconel 718 exhibits a parabolic behavior and is diffusion-controlled over a wide temperature range of 1223 K to 1573 K for extended periods (up to several weeks). When the temperature exceeds 1573 K, oxidation becomes very severe, and the material undergoes significant deformation.
Inconel 718 alloy plate is a nickel-based high-temperature alloy product known for its high strength and excellent corrosion resistance at elevated temperatures. This alloy is designed for harsh environments and is widely used in industries such as aerospace, power generation, and oil and gas. Its plate form is particularly suitable for applications requiring precision machining and structural integrity.
Inconel 718 plate Composition
| Element | Composition (%) |
| Nickel (Ni) | 50.0 – 55.0 |
| Chromium (Cr) | 17.0 – 21.0 |
| Iron (Fe) | Balance (typically 17 – 20%) |
| Niobium (Nb) + Tantalum (Ta) | 4.75 – 5.50 |
| Molybdenum (Mo) | 2.80 – 3.30 |
| Titanium (Ti) | 0.65 – 1.15 |
| Aluminum (Al) | 0.20 – 0.80 |
| Cobalt (Co) | ≤ 1.0 |
| Manganese (Mn) | ≤ 0.35 |
| Silicon (Si) | ≤ 0.35 |
| Copper (Cu) | ≤ 0.30 |
| Carbon (C) | ≤ 0.08 |
| Phosphorus (P) | ≤ 0.015 |
| Sulfur (S) | ≤ 0.015 |
| Boron (B) | ≤ 0.006 |
Inconel 718 Sheets Mechanical Properties
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.2 g/cm3 | 1350 °C (2460 °F) | Psi – 1,35,000 , MPa – 930 | Psi – 75,000 , MPa – 482 | 45 % |
Inconel 718 Sheets Physical Properties
| Density (Kg.m-1) | 82.3 |
|---|---|
| Magnetic Permeability (20°C) | <1.002 |
| Curie Temperature (°C) | -152 |
| Young's Modulus (N/mm2) | 200 x 10 |
| Specific Heat, 20°C (J.Kg-1.°K-1) | 435 |
| Specific Electrical Resistance, 20°C (?O.m) | 1.25 |
| Thermal conductivity,20°C (W.m-1.°K-1) | 11.1 |
| Mean coefficient of thermal expansion, 20-100°C (°K-1) | 12.1 x 10 |
Characteristics of Inconel 718 Plate
High Strength: Inconel 718 plate maintains high mechanical strength even under harsh conditions. It retains its structural integrity in high-pressure and high-temperature environments.
This makes it suitable for aerospace and high-performance applications.
Corrosion Resistance: The alloy exhibits oxidation and corrosion resistance in harsh environments. It performs well in acidic, marine, and high-temperature environments. This corrosion resistance extends the lifespan of parts.
Creep Resistance: Inconel 718 plate can withstand deformation caused by long-term mechanical stress. It maintains its shape and strength over extended periods at high temperatures. Therefore, it can be used in parts subjected to continuous loads.
Weldability: Compared to most other high-temperature alloys, it is easy to weld and less prone to cracking. It is suitable for various welding processes with minimal post-welding treatment. This makes manufacturing and repairing components more convenient.
Thermal Stability: The alloy remains stable at temperatures up to 1300°F (700°C) without performance degradation. It maintains its mechanical properties and corrosion resistance at high temperatures. It is an ideal material for turbine engines and exhaust systems.
Low-Temperature Performance: Inconel 718 plate exhibits high strength and good ductility at extremely low temperatures. It is not prone to embrittlement and is suitable for cryogenic environments. It is commonly used in aerospace and liquefied gas applications.
Inconel 718 Sheets Price List
Nickel Alloy 718 Rolled Plate and Inconel 718 Perforated Plate Suppliers, View ASME SB 670 UNS N07718 Strip Surface Treatment Chart
Annealed and Descaled Cold Rolled Inconel 718 Plate ASTM B670 UNS N07718
FOB Price: US$1200-6000/ton
UNS N07718 ASTM B670 Inconel 718 Nickel Alloy Plate
FOB Price: US$10-30/kg
Best ASTM B670 Inconel 718 UNS N07718 AMS5540 Plate Manufacturer
10 kg (Minimum Order Quantity)
Inconel 718 Plate ASTM B670 ASMR SB670 UNS N07718
FOB Price: US$10-50/kg
ASME SB670 /ASTM B670 UNS N07718 Plate
FOB Price: US$10-30/kg
Custom Inconel 718 UNS N07718 ASTM B670 Plate for Marine Industry
FOB Price: US$15-45/kg
ASME SB670 ASTM B670 UNS N07718 Inconel 718 Plate
FOB Price: US$15-45/kg
ASME SB670 UNS N07718 Steel Plate
FOB Price: US$1-999/kg
UNS N07718 ASTM B670 Inconel 718 Nickel Alloy Plate
FOB Price: US$15-45/kg
High Quality ASTM B670 UNS N07718 Alloy Steel Plate, In Stock
FOB Price: US$10-50/kg
ASTM B670 UNS N07718 Steel Plate
FOB Price: US$1-999/kg
UNS N07718 Nickel 718 Alloy Plate ASTM B670
FOB Price: US$15-45/kg
| 0.016 | 0.020 | 0.025 | 0.031 | 0.035 | 0.040 | 0.050 | |
|---|---|---|---|---|---|---|---|
| 12×12 | $ 299.00 | $ 319.00 | $ 318.00 | $ 331.00 | $ 338.00 | $ 344.00 | $ 363.00 |
| 12×24 | $ 398.00 | $ 348.00 | $ 367.00 | $ 391.00 | $ 399.00 | $ 419.00 | $ 455.00 |
| 12×36 | $ 397.00 | $ 380.00 | $ 399.00 | $ 442.00 | $ 459.00 | $ 481.00 | $ 583.00 |
| 12×48 | $ 399.00 | $ 419.00 | $ 453.00 | $ 499.00 | $ 579.00 | $ 599.00 | $ 669.00 |
| 24×24 | $ 399.00 | $ 417.00 | $ 453.00 | $ 499.00 | $ 578.00 | $ 599.00 | $ 669.00 |
| 24×36 | $ 493.00 | $ 489.00 | $ 585.00 | $ 664.00 | $ 699.00 | $ 742.00 | $ 837.00 |
| 24×48 | $ 591.00 | $ 599.00 | $ 675.00 | $ 765.00 | $ 821.00 | $ 967.00 | $1,109.00 |
| 36×36 | $ 596.00 | $ 639.00 | $ 719.00 | $ 821.00 | $ 983.00 | $1,046.00 | $1,186.00 |
Please contact us for a quick quote on the 718 alloy sheet products you require
We supply these Inconel alloy hot-rolled, cold-rolled, and sheet products in accordance with ASTM, ASME, and API standards.
Gnee Steel is a professional manufacturer 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. We specialize in the production and sales of alloy materials. Gnee Steel's products are widely used in aerospace, chemical, power, automotive, and nuclear energy industries, and we can provide customized alloy material solutions according to customer needs. For alloy material price inquiries or to request customized alloy material solutions, please feel free to contact us at ru@gneesteelgroup.com for a quote.