This alloy exhibits excellent overall performance across a broad temperature spectrum, from -253 to 700 ℃. It boasts superior yield strength below 650 ℃, surpassing other deformed superalloys, and also demonstrates impressive fatigue resistance, radiation resistance, oxidation resistance, and corrosion resistance. Additionally, it possesses favorable characteristics for processing and welding.
The alloy's versatility allows for the fabrication of intricately shaped components, which has led to its extensive application in sectors such as aerospace, nuclear energy, the petroleum industry, and in the creation of extrusion dies within the specified temperature range.
Alloy 718 Physical Properties
Melting point: 1260-1340 ℃
Density: 8.2 g/cm3
Hardness: ≥ 331 (HBS)
Magnetism: None
Similar brands
China: GH4169
Germany: W.Nr.2.4668
France: Nc19FeNb
Chemical Composition
The chemical composition of 718 Nickel-based Forging Alloy typically includes 50-55% nickel, 17-21% chromium, 4.75-5.5% niobium, 2.8-3.3% molybdenum, and 0.65-1.15% titanium. Other minor elements may be present in smaller quantities, including aluminum, copper, carbon, manganese, and sulfur.
Mechanical Properties
The mechanical properties of 718 Nickel-based Forging Alloy are impressive, with high strength, excellent corrosion resistance, and good heat resistance. Its tensile strength ranges from 150 to 200 ksi, while its yield strength is between 95 and 160 ksi. The alloy is also highly resistant to fatigue and creep, making it suitable for use in high-stress applications for long periods.
Product Applications
718 Nickel-based Forging Alloy is used in a wide range of applications in the aerospace, chemical, and nuclear industries. It is often used to manufacture aircraft engines, gas turbines, rocket motors, and nuclear reactors. The alloy's high strength and corrosion resistance make it suitable for use in harsh environments where other materials would quickly deteriorate.