Nickel 686 vs. SAE-AISI M2 Steel

Nickel 686 belongs to the nickel alloys classification, while SAE-AISI M2 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is nickel 686 and the bottom bar is SAE-AISI M2 steel.

Nickel Alloy 686 (2.4606, N06686)SAE-AISI M2 (T11302) Molybdenum High-Speed Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		220
Elastic (Young's, Tensile) Modulus, GPa		200

Poisson's Ratio		0.29
Poisson's Ratio		0.29

Shear Modulus, GPa		77
Shear Modulus, GPa		77

Tensile Strength: Ultimate (UTS), MPa		780
Tensile Strength: Ultimate (UTS), MPa		760 to 2150

Thermal Properties

Latent Heat of Fusion, J/g		320
Latent Heat of Fusion, J/g		260

Melting Completion (Liquidus), °C		1380
Melting Completion (Liquidus), °C		1610

Melting Onset (Solidus), °C		1340
Melting Onset (Solidus), °C		1570

Specific Heat Capacity, J/kg-K		420
Specific Heat Capacity, J/kg-K		440

Thermal Conductivity, W/m-K		9.8
Thermal Conductivity, W/m-K		22

Thermal Expansion, µm/m-K		12
Thermal Expansion, µm/m-K		10

Otherwise Unclassified Properties

Base Metal Price, % relative		70
Base Metal Price, % relative		24

Density, g/cm³		9.0
Density, g/cm³		8.4

Embodied Carbon, kg CO₂/kg material		12
Embodied Carbon, kg CO₂/kg material		8.8

Embodied Energy, MJ/kg		170
Embodied Energy, MJ/kg		130

Embodied Water, L/kg		300
Embodied Water, L/kg		98

Common Calculations

Stiffness to Weight: Axial, points		14
Stiffness to Weight: Axial, points		13

Stiffness to Weight: Bending, points		22
Stiffness to Weight: Bending, points		23

Strength to Weight: Axial, points		24
Strength to Weight: Axial, points		25 to 71

Strength to Weight: Bending, points		21
Strength to Weight: Bending, points		22 to 44

Thermal Diffusivity, mm²/s		2.6
Thermal Diffusivity, mm²/s		5.9

Thermal Shock Resistance, points		21
Thermal Shock Resistance, points		27 to 76

Alloy Composition

Carbon (C), %		0 to 0.010
Carbon (C), %		0.78 to 1.1

Chromium (Cr), %		19 to 23
Chromium (Cr), %		3.8 to 4.5

Copper (Cu), %		0
Copper (Cu), %		0 to 0.25

Iron (Fe), %		0 to 5.0
Iron (Fe), %		78.5 to 83.4

Manganese (Mn), %		0 to 0.75
Manganese (Mn), %		0.15 to 0.4

Molybdenum (Mo), %		15 to 17
Molybdenum (Mo), %		4.5 to 5.5

Nickel (Ni), %		49.5 to 63
Nickel (Ni), %		0 to 0.3

Phosphorus (P), %		0 to 0.040
Phosphorus (P), %		0 to 0.030

Silicon (Si), %		0 to 0.080
Silicon (Si), %		0.2 to 0.45

Sulfur (S), %		0 to 0.020
Sulfur (S), %		0 to 0.030

Titanium (Ti), %		0.020 to 0.25
Titanium (Ti), %		0

Tungsten (W), %		3.0 to 4.4
Tungsten (W), %		5.5 to 6.8

Vanadium (V), %		0
Vanadium (V), %		1.8 to 2.2