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Inconel 718

Inconel 718 Suppliers

Inconel 718 (Alloy 718) is a well-known austenitic nickel-based super alloy which exhibits excellent tensile and impact strength, even at cryogenic temperatures.

City Special Metals manufacture a wide range of Inconel 718 products, always to the highest standard. As well as this, we also work with other specialist alloys and are widely known as Europe's largest stockist of low and controlled expansion alloys. Want to know more about Inconel 718, our products or would like to get a quote? Discuss your requirements by contacting our team today.

Inconel 718 Stockist Range

Product FormRange FromRange To
Inconel 718 Round Bar3.175mm304mm
Inconel 718 Plate4.7mm100mm
Inconel 718 Sheet0.254mm4mm

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Inconel 718 Products & Properties

Inconel 718 is used in applications requiring high strength to approximately 760°C (1400°F) and oxidation resistance to approximately 982°C (1800°F) . Being a mixture of nickel and chromium, it exhibits high levels of strength and durability.

Speak to City Special Metals today if you have an questions or would like to speak to us about Inconel 718 or any of our other speciality alloys. Get in touch by either calling us or messaging us using any of the contact forms on our website.

Beneficial Properties

  • Shock-resistant Their coefficient thermal expansion makes the seal resistant to shock and cracking
  • Flexibility Good workability, weldability and easy to machine
  • Durability Strong performance, toughness and resilience
  • Corrosion-resistant High resistance to certain corrosive environments and elements, fatigue and wear

Markets & Applications

  • Manufacture of turbine engines, both aircraft and automobile
  • Aerospace components such as: wheels, buckets, spacers and fasteners
  • Manufacture of other equipment and instrumentation parts for industrial machinery

Inconel 718 Mechanical Properties

Annealed, Aged
Yield StrengthKSI (MPa)125
Tensile StrengthKSI (MPa)180
HardnessHB109
Elongation50mm10 (%)

Inconel 718 Technical Specifications

ASTMUNSWerkstoffOther
B637N077182.4668API 6A 718

Inconel 718 Chemistry

NickelNi50-55 Max
IronFeBalance
CarbonC0.08 Max
ChromiumCr17-21 Max
SiliconSi0.35 Max
ManganeseMn0.35 Max
SulphurS0.015 Max
PhosphorusP0.015 Max
MolybdenumMo2.80-3.30 Max
TitaniumTi0.65-1.15 Max
CobaltCo1
BoronB0.001-0.006 Max
AluminiumAl0.35-0.80 Max
CopperCu0.15 Max
Niobium + TantalumNb + Ta4.75-5.50 MAx

Inconel 718 Physical Properties

Densityg/cm³8.23
Curie Temp°F-169.6 (aged)
°C-112 (aged)
Melting Point°F2200-2450
°C1210-1344
Coefficient of Thermal Expansion
20-100°C12.1 x 10-6/°C
Youngs / Shears ModulusMPa200,000
Specific HeatJ/g-°C20
Thermal Conductivity at 20°CW/m.K°C11.1
Magnetic Permeability at 20°C<1.002
Specific Electrical Resistance at 20°C(µΩ-m)1.25

We offer a bespoke service so, if you don’t see the size or form that you require, contact us either by phone, email or our contact form below, and we will provide a solution to your requirements.