Gnee is a professional Inconel 718 plate suppliers, provide ASTM B637 Inconel 718 plates/sheets, such as alloy 718 cold rolled sheet, hot rolled plate, custom size sheets, etc. with precision processing, global shipping, and customized solutions for various industrial applications. Bulk discounts available.
Inconel 718 Plate Supplier
Gnee specializes in the production and supply of Inconel 718 plate raw materials. Our plates comply with ASTM B637, ASTM B705 and other international standards and can be used to manufacture equipment such as chemical reactors, heat exchangers, oil extraction, turbine components, etc.
We offer nickel-based alloy plates in a variety of sizes with thicknesses ranging from 3mm to 100mm, and provide precision processing services such as cutting, machining and heat treatment. We also supply other grades and shapes of nickel-based alloy products, and custom orders are welcome!
| About Gnee Alloy | Founded in 2008, Factory Area 35,000m², expert nickel alloy manufacturer & supplier & exporter with rich experience. |
|---|---|
| Rich Grades & Shapes | Inconel Plate & Pipe & Tube & Sheet & Bar & Coil & Fitting In Stock |
We have rich inconel 718 plate forms in stock
Gnee provide aerospace-grade Inconel 718 hot rolled plate, cold rolled plate, coil and custom size sheets, ensuring end-to-end solutions from prototyping to mass production. We support third-party inspection: optional NDE (non-destructive testing), including hydrostatic, ultrasonic and eddy current testing
718 Hot Rolled Plate 
718 Cold Rolled Plate 
Inconel 718 Sheet 
Inconel 718 Clad Plate 
718 Perforated Plate 
718 Checkered Plate 
Inconel 718 Coil 
Inconel 718 Strip
Basic Information Of Inconel 718 Plate
The following is the product specifications of Alloy 718 plate/sheet that Gnee can provide. If you need more information, please contact us
Description
Inconel 718 Plate is a high-strength, corrosion-resistant nickel-chromium alloy with excellent performance at elevated temperatures (up to 700°C/1292°F). Composed mainly of nickel (50-55%) and chromium (17-21%), it also contains molybdenum, niobium, aluminum, and titanium.
Inconel 718 is particularly noted for its ability to maintain high tensile and yield strength, along with excellent fatigue and oxidation resistance at temperatures up to 700°C (1292°F). It’s used in aerospace, power generation, and chemical processing industries for turbine engines, exhaust systems, and high-temperature components. It is recognized by ASTM B637 and UNS N07718.
Inconel 718 sheet Product Parameters
| Property | Value |
| Product | Inconel 718 Plate |
| Material Type | Nickel-Chromium Alloy |
| Grade | Inconel 718 |
| Thickness Range | 0.5 mm – 200 mm |
| Width Range | 100 mm – 2000 mm |
| Length Range | 100 mm – 6000 mm |
| Standard | ASTM B637, AMS 5662, UNS N07718 |
| Chemical Composition | Ni: 50-55%, Cr: 17-21%, Fe: 18-21%, Mo: 2.8-3.3%, Ti: 0.65-1.15% |
| Density | 8.19 g/cm³ |
| Tensile Strength | 1035 MPa |
| Yield Strength | 690 MPa |
| Elongation | 0.15 |
| Hardness | 35-43 HRC |
| Melting Point | 1260°C – 1330°C |
| Manufacturing Process | Hot Rolling, Cold Rolling, Annealing |
| Applications | Aerospace, Gas Turbines, Nuclear Reactors, High-Temperature Service |
What ASTM standards of Inconel 718 Plate can Gnee produce?
| ASTM Standard | Description |
| ASTM B637 | Specification for Inconel 718, precipitation-hardened alloy |
| ASTM B705 | Specification for nickel alloys, sheet & plate |
| ASTM B751 | Specification for high-temperature alloys |
| AMS 5662 | Aerospace specification for Inconel 718 |
Inconel 718 Plate & sheet material Equivalent grades
| Standard | UNS | EN | DIN |
| Inconel 718 | N07718 | 2.4668 | NiCr19FeNb |
We provide Inconel 718 Plate surface treatment services
- Bright Annealed (BA): A smooth, shiny surface with minimal oxidation, ideal for high-performance applications.
- Polished: A high-gloss finish achieved through mechanical polishing.
- Pickled: Removal of scale and oxide layers through acid treatment to improve surface quality.
- Mill Finish: The raw, unpolished surface from the rolling process.
Custom finishes tailored to specific customer requirements
Parameter Information
Chemical Parameters
| Element | Content (%) |
| Nickel (Ni) | 50-55 |
| Chromium (Cr) | 17-21 |
| Iron (Fe) | Balance |
| Molybdenum (Mo) | 2.8-3.3 |
| Niobium (Nb) | 4.75-5.5 |
| Titanium (Ti) | 0.65-1.15 |
| Aluminum (Al) | 0.2-0.8 |
| Cobalt (Co) | Up to 1.0 |
| Carbon (C) | ≤ 0.08 |
| Manganese (Mn) | ≤ 0.35 |
| Silicon (Si) | ≤ 0.35 |
| Phosphorus (P) | ≤ 0.015 |
| Sulfur (S) | ≤ 0.015 |
Mechanical Properties
| Property | Value |
| Tensile Strength | 1,270 MPa (185 ksi) |
| Yield Strength (0.2%) | 1,030 MPa (150 ksi) |
| Elongation at Break | 15-25% |
| Hardness (Rockwell B) | 90-95 |
| Modulus of Elasticity | 200 GPa (29 x 10³ ksi) |
Physical Property
| Property | Value |
| Density | 8.19 g/cm³ (0.296 lb/in³) |
| Melting Point | 1,300°C (2,372°F) |
| Thermal Conductivity | 11.4 W/m·K at 100°C |
| Specific Heat Capacity | 0.44 J/g·K at 25°C |
| Electrical Resistivity | 1.15 µΩ·m |
Inconel 718 Plate Heat Treatment Parameters
| Step | Temperature (°C) | Time (hours) |
| Annealing | 850-1050 | 1-4 |
| Quenching | 1100-1350 | 1-4 |
- Annealing: Appropriate annealing temperature and time can eliminate internal stress and improve the toughness and plasticity of the material.
- Quenching: Normalizing is to optimize the grain boundary structure and improve the strength and hardness of the material.
- Annealing temperature: usually between 850-1050°C, the specific time is adjusted according to the material thickness and target performance.
- Normalizing temperature: usually between 1100-1350°C, the time is also adjusted according to the material thickness and specific needs.
- Different manufacturing processes and application scenarios may have slight differences
Features And Applications
Features and advantages of Inconel 718 plate/sheet
- High-Temperature Strength: Maintains excellent mechanical properties at temperatures up to 700°C (1292°F), ideal for high-stress, high-temperature applications.
- Superior Corrosion Resistance: Resistant to oxidation and corrosion, particularly in acidic and saltwater environments, ensuring long-term durability.
- Excellent Weldability: Well-suited for welding applications, offering high joint integrity and minimal cracking risk.
- Fatigue and Thermal-Cyclic Properties: Outstanding resistance to fatigue and thermal cycling, which extends the service life of components under fluctuating temperature conditions.
- Versatile Alloy: Used in aerospace, nuclear, and gas turbine industries for demanding applications like turbine blades, engine components, and pressure vessels.
- High Strength: Combines high strength with good ductility and toughness, particularly in cryogenic and elevated temperature environments.
In what fields is Inconel 718 plate mainly used?
- Aerospace: Engine components, turbine blades, and gas turbines.
- Marine Engineering: High-stress components like shafts and marine exhaust systems.
- Nuclear Power: Reactor core support structures and fasteners.
- Chemical Processing: Heat exchangers, reactors, and pipes.
- Industrial Gas Turbines: Hot-section components exposed to extreme conditions.
Inconel 718 plate Size Chart
Inconel 718 Hot Rolled Plate
| Dimension Parameter | Range | Applicable Standard |
| Thickness | 4.5–100 mm or as required | ASTM B670, AMS 5662 |
| Width | 650–2500 mm or as required | GB/T 14992 |
| Length | 1000–6000 mm or as required | DIN 2.4668 |
Notes: For high-temperature load-bearing components. Requires control of Nb segregation. Delivery condition: typically solution-annealed.
Inconel 718 Cold Rolled Sheet
| Dimension Parameter | Range | Applicable Standard |
| Thickness | 0.2–6.0 mm or as required | ASTM B670, ASME SB670 |
| Width | 20–1500 mm or as required | AMS 5663 |
| Length | 400–2200 mm or as required | EN 10204.3.1 |
Notes:Surface finish: bright/2B/mirror. Suitable for precision stamping. Requires cold rolling after solution annealing.
Inconel 718 Coil
| Dimension Parameter | Range | Applicable Standard |
| Coil Thickness | 0.03–2.0 mm (thin); 0.8–4.0 mm (thick) | ASTM B670 |
| Coil Width | 20–610 mm or as required | In-house standard (equivalent to ASSAB 718) |
| Inner Diameter | 508 mm or as required | Custom agreement |
Notes: Supplied in coils for continuous stamping. Requires control of residual stress cracks.
Why Choose Inconel 718 Plate from Gnee？
Gnee has been deeply involved in the field of high-temperature alloys for more than 20 years. Thanks to the vertically integrated supply chain, we have achieved independent production of the entire process of vacuum melting – hot forging – solution treatment, reducing the cost of intermediate links, supporting customized specifications while providing complete material certification and customized delivery services. Our Inconel 718 plate products has more competitive prices.
Gnee Alloys-nickel alloy Rich Grades For Sale
In addition to Inconel 718, we can also provide the following grades of nickel-based alloys
FAQ
Below are some frequently asked questions about Alloy 718 sheet. If you have any other questions, please feel free to contact us.
English 
Spanish 
Arabic 
Indonesian 
Turkish 
Russian 
Portuguese 
French 
Persian