Alloy 718
UNS N07718
Werkstoff – Nr. 2.4668
DIN 17744/17752/17753

Alloy 718 (UNS N07718 / 2.4668) is a high-strength alloy with excellent mechanical properties at elevated temperatures, as well as cryogenic temperatures from -253°C to 705°C. It combines high strength in the aged condition with good corrosion resistance and weldability. Typically sold in the solution annealed temper, but can be ordered aged, cold worked, or cold worked & aged.

Chemical composition

NickelNi50.0-55.0% ChromiumCr17.0-21.0% MolybdenumMo2.8-3.3% ManganeseMn0.35% SiliconSi0.35% CarbonC0.08%

Physical properties

Density at room°C Electrical resistivity at 21°C Termal conductivity at 21°C Modulus of Elasticity at room °C Mean Coefficient Thermal Expansion at 21-93°C
8.22 g/cm3 1.22 Ω mm2/m 11.4 W/m/°C 202 GPa 13.5μm/m°C

Mechanical properties

Material Yield Strength, 0.2 (MPa) Tensile Strength (MPa) Elongation %
Alloy 718 930-1034 530-1275 12-38

Product forms

Product Size, mm Condition of supply
wire 0.2 – 12.0 soft annealed
stranded wire 5.0 – 60.0 hot finished
cold finished
bright turned
bright annealed


Uses of this alloy tend to be in the field of gas turbine components and cryogenic storage tanks, jet engines, pump bodies and parts, rocket motors and thrust reversers, nuclear fuel element spacers, hot extrusion tooling. Other popular applications are high strength bolting, and down hole shafting.

Typical Applications for the Alloy 718 include:
  • valves
  • well head completion equipment
  • fasteners
  • blow out preventers (BOPs)
  • tubing hangers
  • mandrels

Our customers can buy Alloy 718 wire online according to their requests.