Materials / Nickel

Nickel Inconel 718

Nickel Inconel 718 (annealed + aged) strength, stiffness, density and thermal properties, with their source.

A bracket in Nickel Inconel 718, brushed finish.

Mechanical
Yield strength1,207MPa1
Ultimate tensile strength1,389MPa1
Elongation at break20%1
Young's modulus (stiffness)200GPa1
Density8,221kg/m³1
Strength to weight147kN·m/kg
Stiffness to weight24.3MN·m/kg
Poisson's ratio0.2941
Shear modulus77.3GPa
Bulk modulus162GPa
Speed of sound4,932m/s
1k10k0.1110100Density (kg/m³)Young's modulus (GPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonWoodAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110Copper C10100Copper C12200GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 17-4PHAluminum 2024-T351Aluminum 5052-H32Aluminum 7050-T7451Titanium Ti-6Al-4VBrass C260Magnesium AZ31B-H24Zinc Zamak 3Plastic ABS (bulk/injection)Plastic PolycarbonatePlastic POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM PAHT-CFFDM HIPSSLA Resin StandardSLA Resin Tough 2000SLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelConcretePCB Laminate FR-4SiliconCeramic Alumina 96%Ceramic Aluminum NitrideAluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum 3003-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Nickel Inconel 718
Stiffness against densityHigher and further left: stiffer for its weight
1k10k101001kDensity (kg/m³)Yield strength (MPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonRubberWoodAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110Copper C10100Copper C12200GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 17-4PHAluminum 2024-T351Aluminum 5052-H32Aluminum 7050-T7451Titanium Ti-6Al-4VBrass C260Magnesium AZ31B-H24Zinc Zamak 3Plastic ABS (bulk/injection)Plastic PolycarbonatePlastic POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic PTFEPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM PAHT-CFFDM HIPSSLA Resin StandardSLA Resin Tough 2000SLA Resin Elastic 50ASLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelBrickPCB Laminate FR-4SiliconCeramic Alumina 96%Aluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum 3003-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Nickel Inconel 718
Strength against densityHigher and further left: stronger for its weight
Thermal
Thermal conductivity11.4W/m·K1
Thermal expansion13.2µm/m·K1
100 mm part over a 50 °C swing66µm growth
Specific heat435J/kg·K1
Heats up and cools (diffusivity)3.19mm²/s
Thermal shock resistance3,680W/m
Melting pointmelting range1,260–1,336°C1
Max service temperature704°C1
1k10k0.1110100Density (kg/m³)Thermal conductivity (W/m·K)Plastic PLAPlastic PETGPlastic ABSPlastic NylonRubberWoodAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110Copper C10100Copper C12200GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 17-4PHAluminum 2024-T351Aluminum 5052-H32Aluminum 7050-T7451Titanium Ti-6Al-4VBrass C260Magnesium AZ31B-H24Zinc Zamak 3Plastic ABS (bulk/injection)Plastic PolycarbonatePlastic POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic PTFEPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM HIPSSLA Resin StandardDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelConcreteBrickPCB Laminate FR-4SiliconCeramic Alumina 96%Ceramic Aluminum NitrideAluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum 3003-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Nickel Inconel 718
Thermal conductivity against densityHigher and further left: spreads more heat for its weight
0.111010010100Thermal conductivity (W/m·K)Thermal expansion (µm/m·K)Plastic PETGPlastic ABSPlastic NylonWoodAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110Copper C10100Copper C12200GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 17-4PHAluminum 2024-T351Aluminum 5052-H32Aluminum 7050-T7451Titanium Ti-6Al-4VBrass C260Magnesium AZ31B-H24Zinc Zamak 3Plastic ABS (bulk/injection)Plastic PolycarbonatePlastic POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic PTFEPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM HIPSSLA Resin StandardDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelConcreteBrickPlywoodPCB Laminate FR-4SiliconCeramic Alumina 96%Ceramic Aluminum NitrideAluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum 3003-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Nickel Inconel 718
Thermal expansion against thermal conductivityLower and further right: warps less when heated
Sources1 document: Special Metals
Values for
Wrought. INCONEL alloy 718, standard grade, 1750 °F/1 hr anneal + 1325 °F/8 hr F.C. to 1150 °F aged; Special Metals bulletin SMC-045 typical values
  1. 1
    INCONEL alloy 718 (SMC-045)Special Metalsarchived copyYield strength: typical, 1.0 in. hot-rolled bar, 0.2% offsetUltimate tensile strength: typical, 1.0 in. barElongation at break: typical, 1.0 in. barYoung's modulus (stiffness): typical, 21 °C, annealed + agedDensity: nominal, annealed and agedPoisson's ratio: typical, 21 °C, annealed + agedThermal conductivity: typical, 21 °C, annealed + aged (calculated from resistivity per footnote a)Thermal expansion: typical, mean 21-93 °C, annealed + agedSpecific heat: typical, 21 °CMelting point: melting rangeMax service temperature: upper use temperature stated by producer
Open in LessCAD

Thermal properties of Nickel Inconel 718

Thermal conductivity of Nickel Inconel 718

Nickel Inconel 718 has a thermal conductivity of 11.4 W/m·K (6.59 BTU/hr·ft·°F). Basis: typical, 21 °C, annealed + aged (calculated from resistivity per footnote a). Source: Special Metals, INCONEL alloy 718 (SMC-045)archived copy.

Specific heat of Nickel Inconel 718

The specific heat capacity of Nickel Inconel 718 is 435 J/kg·K (0.104 BTU/lb·°F). Basis: typical, 21 °C. Source: Special Metals, INCONEL alloy 718 (SMC-045)archived copy.

Coefficient of thermal expansion of Nickel Inconel 718

Nickel Inconel 718 expands 13.2 µm/m·K (7.33 µin/in·°F): a 100 mm part grows 66 µm over a 50 °C rise. Basis: typical, mean 21-93 °C, annealed + aged. Source: Special Metals, INCONEL alloy 718 (SMC-045)archived copy.

Thermal diffusivity of Nickel Inconel 718

Computed from the conductivity, density and specific heat (k / ρc): 3.19 mm²/s, how fast a temperature change spreads through it.

Melting point of Nickel Inconel 718

Nickel Inconel 718 melts at 1,260–1,336 °C (2,300–2,437 °F). Basis: melting range. Source: Special Metals, INCONEL alloy 718 (SMC-045)archived copy.

Maximum service temperature of Nickel Inconel 718

The maximum service temperature of Nickel Inconel 718 is 704 °C (1,299 °F). Basis: upper use temperature stated by producer. Source: Special Metals, INCONEL alloy 718 (SMC-045)archived copy.

Compare Nickel Inconel 718 with

Closest alternatives