Inconel 718 Nickel-Chromium-Molybdenum Hardenable Alloy
Inconel 718 is a nickel-chromium-molybdenum hardenable alloy designed to display exceptionally high yield, tensile and creep-rupture properties at temperatures up to 1300°F (704°C). The age-hardening response of Inconel 718 permits annealing and welding without spontaneous hardening during heating and cooling. Nickel Alloy 718 has excellent weldability when compared to the nickel-base super alloys hardened by aluminum and titanium. Nickel Alloy 718 is used in aircraft engine parts and high-speed airframe parts such as wheels, buckets, spacers, and high temperature bolts and fasteners.
Material Notes
Nickel content above includes cobalt. Iron content as remainder. Developed in the early 1960’s, IN718 is still considered the material of choice for the majority of aircraft engine components with service temperatures below 1200°F (650°C). Inconel 718 is a precipitation-hardenable nickel-chromium alloy containing also significant amounts of iron, niobium, and molybdenum along with lesser amounts of aluminum and titanium. It combines corrosion resistance and high strength with outstanding weldability including resistance to postweld cracking. The alloy has excellent creep-rupture strength at temperatures to 1300°F (700°C).
Applications; Aerospace, gas turbines, rocket motors, spacecraft, space shuttles, nuclear reactors, pumps, turbo pump seals, and tooling.
Forms: round, flat, extruded section, pipe, tube, forging stock, plate, sheet, strip and wire.
| Physical Properties | Metric | English | Comments |
| Density | 8.19 g/cc | 0.296 lb/in³ | |
| Mechanical Properties |
| Tensile Strength, Ultimate | 1375 MPa | 199000 psi | Precipitation Hardened. Value at room temperature. Value at 650°C is 1100 MPa. |
| Tensile Strength, Yield | 1100 MPa | 160000 psi | Precipitation Hardened. Value at room temperature; 0.2% offset. Value at 650°C is 980 MPa. |
| Elongation at Break | 25 % | 25 % | Precipitation Hardened. Value at room temperature. Value at 650°C is 18%. |
| Electrical Properties |
| Electrical Resistivity | 0.000125 ohm-cm | 0.000125 ohm-cm | |
| Magnetic Permeability | 1.0011 | 1.0011 | at 200 oersted (15.9 kA/m) |
| Curie Temperature | -112 °C | -170 °F | |
| Thermal Properties |
| CTE, linear 20°C | 13 µm/m-°C | 7.22 µin/in-°F | 20-100°C |
| Heat Capacity | 0.435 J/g-°C | 0.104 BTU/lb-°F | |
| Thermal Conductivity | 11.4 W/m-K | 79.1 BTU-in/hr-ft²-°F | |
| Melting Point | 1260 – 1336 °C | 2300 – 2440 °F | |
| Solidus | 1260 °C | 2300 °F | |
| Liquidus | 1336 °C | 2440 °F | |
Product Pictures
Company Introduction:
FAQ:
Q: Are you trading company or manufacturer ?
A: A professional steel pipes materials inventor, manufacturer and solution provider
Q: How long is your delivery time?
A: Generally it is 7-14 days if the goods are in stock. or it is 30-60 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample of Cold drawn ERW DOM tubes ASTM A513 1010 1020 1026 for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us.
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Inconel 718 Nickel-Chromium-Molybdenum Hardenable Alloy Images
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