What you need to know about Inconel 718 round bar
Inconel 718 alloy rod is a high-strength nickel-chromium-iron superalloy known for its excellent high-temperature mechanical properties and resistance to corrosion and oxidation. Bars made from Inconel 718 are commonly used in aerospace, gas turbines, and other demanding applications where these properties are critical.
How should 718 Inconel alloy be heat treated?
For optimal tensile and stress-rupture properties, the following heat treatment should be used: 1 hour at 1750°F to 1800°F (954 to 982°C) in air, followed by 8 hours at 1325°F (718°C), followed by cooling at 100°F/hour to 1150°F (56°C/hour to 621°C), holding for 8 hours, and then air cooling.
Mechanical Strength Table Chart Alloy 718 Round Bar
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 718 | 8.14 g/cm3 | 1400 °C (2550 °F) | Psi – 80,000 , MPa – 550 | Psi – 32,000 , MPa – 220 | 30 % |
Chemical Compatibility Chart of Inconel 718 Round Bar
| Grade | C | Mn | Si | Fe | S | Cr | Al | Ni | |
| 718 | min. | – | – | – | bal | – | 17.0 | 0.2 | 50.0 |
| max. | 0.08 | 0.35 | 0.35 | bal | 0.01 | 21.0 | 0.8 | 55.0 | |
Material Specification of Nickel 718 Round Bar
| Inconel alloy 718 Round bar size | Diameter: 3-~800mm |
|---|---|
| Nickel Alloy 718 Hex Bar size | 2-100mm A/F |
| Inconel 718 din 2.4668 Flat bar size | Thickness: 2 -100mm |
| Width: 10 to 500mm | |
| Alloy 718 Square bar size | 4 to 100mm |
| ASTM B166 UNS N07718 Angle bar size (in mm) | 3*20*20~12*100*100 |
| Nickel 718 Section | 3.0 to 12.0mm thickness |
Key Properties and Characteristics of Inconel 718 Bar:
High Strength and Toughness: Inconel 718 alloy bar exhibits excellent tensile strength, yield strength, and creep-rupture strength, especially at elevated temperatures.
Corrosion and Oxidation Resistance: It withstands harsh environments, including corrosive chemicals and high-temperature oxidation.
Weldability: Compared to other nickel-based high-temperature alloys, Inconel 718 alloy bar is relatively easy to weld.
Age Hardenability: Its strength can be significantly increased through heat treatment processes.
Temperature Range: It is suitable for use in a wide range of temperatures, from cryogenic to elevated temperatures (up to 1300°F or 704°C).
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, and we can provide 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.
