Inconel 718

Do you need custom Iconel fasteners created with Inconel 718? Since our inception, Elgin Fastener Group has met every challenge of providing quality, timely, cost-effective solutions for Iconel 718 bolts and specialty fastener applications. Every product is built to your specifications, using your prints if necessary.

Below are the material properties and technical specifications of the Inconel 718 Bar Stock we have available to meet your needs.

Special Metals INCONEL® Alloy 718

Subcategory: Metal; Nickel Base; Superalloy

Key Words: IN718, INCONEL 718, AFNOR NC 19 Fe Nb, UNS N07718; ASTM B637, B670; ASME Boiler Code Sections I, III; AMS 5589, AMS 5590, AMS 5596, AMS 5597, AMS 5662, AMS 5663, AMS 5664, AMS 5832, Werkstoff Nr. 2.4668; WL Nr. 2.4668; MIL-N-24469; NACE MR-01-75; AECMA Pr EN 2404, 2405, 2407, 2408, 2952, 2961, 3219

Component Wt. %
Al 0.2 – 0.8
B Max 0.006
C Max 0.08
Co Max 1
Cr 17 – 21
Cu Max 0.3
Fe 17
Mn Max 0.35
Mo 2.8 – 3.3
Nb 4.75-5.5
Ni 50 – 55
P Max 0.015
S Max 0.015
Si Max 0.35
Ti 0.65 – 1.15

 

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.

Data provided by the manufacturer, Special Metals.

MicroGroup’s inventory of small diameter 304 and 316 and other stainless steel, nickel based alloys, and titanium alloys exceeds 5 million feet. Redraw of material to specific sizes and shapes, as well as secondary operations to convert tubing into components and assemblies. Visit http://www.microgroup.com or Phone 1-800-ALL-TUBE (1-800 255-8823) or 1-508-533-4925.

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