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Inconel™ 718 Material Property Data Sheet

Do you need custom fasteners created with Inconel™ 718? Since our inception, Vegas Fastener Manufacturing has met every challenge of providing Quality, Timely, Cost-effective solutions for specialty fastener applications. Every product is built to your specifications, using your prints if necessary.

Below are the 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. %
Al0.2 - 0.8 
BMax 0.006 
CMax 0.08 
CoMax 1 
Cr17 - 21 
Component   Wt. %
CuMax 0.3 
MnMax 0.35 
Mo2.8 - 3.3 
Component   Wt. %
Ni50 - 55 
PMax 0.015 
SMax 0.015 
SiMax 0.35 
Ti0.65 - 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 PropertiesMetricEnglishComments
Density8.19 g/cc0.296 lb/inł 

Mechanical Properties
Tensile Strength, Ultimate1375 MPa199000 psi Precipitation Hardened. Value at room temperature. Value at 650°C is 1100 MPa.
Tensile Strength, Yield1100 MPa160000 psi Precipitation Hardened. Value at room temperature; 0.2% offset. Value at 650°C is 980 MPa.
Elongation at Break25 %25 % Precipitation Hardened. Value at room temperature. Value at 650°C is 18%.

Electrical Properties
Electrical Resistivity0.000125 ohm-cm0.000125 ohm-cm 
Magnetic Permeability1.00111.0011 at 200 oersted (15.9 kA/m)
Curie Temperature-112 °C-170 °F 

Thermal Properties
CTE, linear 20°C13 µm/m-°C7.22 µin/in-°F 20-100°C
Heat Capacity0.435 J/g-°C0.104 BTU/lb-°F 
Thermal Conductivity11.4 W/m-K79.1 BTU-in/hr-ft˛-°F 
Melting Point1260 - 1336 °C2300 - 2440 °F 
Solidus1260 °C2300 °F 
Liquidus1336 °C2440 °F 


 This information is provided by MatWeb.com, The Online Materials Database and is reprinted with their permission.

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