| Element | Content Range | Function |
|---|---|---|
| Nickel (Ni) | Approximately 50% - 55% | It is the main matrix element of Inconel 718. Nickel can improve the strength, toughness, and corrosion resistance of the alloy, and endow the alloy with good high-temperature performance. |
| Chromium (Cr) | Generally 17% - 21% | Chromium can form a dense oxide film on the surface of the alloy, improving the oxidation resistance and corrosion resistance of the alloy, and enhancing the stability of the alloy in high-temperature and harsh environments. |
| Iron (Fe) | About 18% - 21% | Iron is an important constituent element of the alloy, which helps to improve the strength and toughness of the alloy, and at the same time reduces the cost. |
| Niobium (Nb) | Usually 4.75% - 5.50% | Niobium can form stable carbides with carbon, improving the strength and creep resistance of the alloy. Especially at high temperatures, it can effectively prevent grain growth and enhance the high-temperature mechanical properties of the alloy. |
| Molybdenum (Mo) | Approximately 2.8% - 3.3% | Molybdenum can improve the strength, hardness, and corrosion resistance of the alloy, especially having a significant effect on pitting corrosion and crevice corrosion resistance. It also helps to improve the high-temperature strength and toughness of the alloy. |
| Titanium (Ti) | Between 0.65% - 1.15% | Titanium can form a strengthening phase with nickel, improving the strength and hardness of the alloy. At the same time, it can also improve the welding performance of the alloy. |
| Aluminum (Al) | Generally 0.20% - 0.80% | Similar to titanium, aluminum can form a strengthening phase with nickel, improving the high-temperature strength and hardness of the alloy and enhancing the oxidation resistance of the alloy. |
Inconel 718 is a nickel-chromium-molybdenum alloy known for its excellent mechanical properties, especially at high temperatures. Below are its main mechanical properties:
| Mechanical Property | Details |
|---|---|
| High-Temperature Strength | Room Temperature: Tensile Strength: Approximately 1270 - 1370 MPa Yield Strength: Around 1000 - 1070 MPa At 650°C: Tensile Strength: Exceeds 900 MPa Yield Strength: About 750 MPa |
| Fatigue Resistance | Excellent fatigue resistance, can endure a large number of stress cycles without failure, suitable for components with cyclic loading (e.g., turbine blades, engine parts) |
| Creep Resistance | Good creep resistance, low creep rate at 650°C under a given stress level, maintains dimensional stability and mechanical performance during long-term high-temperature service |
| Hardness | After heat treatment, hardness can reach HRC 38 - 42, providing good wear resistance and surface strength |
| Toughness | Good toughness, can absorb energy and resist cracking or brittle fracture under impact and other loading conditions, crucial for component reliability and safety |
Hot Tags: inconel 718 mechanical properties, China, manufacturers, suppliers, factory, 21 4N Valve Steel hexagonal bar, 1 2379 steel plate for Knife, , M2 High Speed Steel Flat Bar, H13 steel block, en36 chemical component