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Nickel 686 vs. SAE-AISI 1078 Steel

Nickel 686 belongs to the nickel alloys classification, while SAE-AISI 1078 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is nickel 686 and the bottom bar is SAE-AISI 1078 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 51
11 to 14
Fatigue Strength, MPa 410
270 to 350
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 77
72
Shear Strength, MPa 560
440 to 470
Tensile Strength: Ultimate (UTS), MPa 780
730 to 780
Tensile Strength: Yield (Proof), MPa 350
430 to 570

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Maximum Temperature: Mechanical, °C 980
400
Melting Completion (Liquidus), °C 1380
1460
Melting Onset (Solidus), °C 1340
1420
Specific Heat Capacity, J/kg-K 420
470
Thermal Conductivity, W/m-K 9.8
49
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 1.4
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 70
1.8
Density, g/cm3 9.0
7.8
Embodied Carbon, kg CO2/kg material 12
1.4
Embodied Energy, MJ/kg 170
18
Embodied Water, L/kg 300
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
77 to 90
Resilience: Unit (Modulus of Resilience), kJ/m3 280
490 to 860
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 24
26 to 28
Strength to Weight: Bending, points 21
23 to 24
Thermal Diffusivity, mm2/s 2.6
13
Thermal Shock Resistance, points 21
25 to 26

Alloy Composition

Carbon (C), % 0 to 0.010
0.72 to 0.85
Chromium (Cr), % 19 to 23
0
Iron (Fe), % 0 to 5.0
98.5 to 99
Manganese (Mn), % 0 to 0.75
0.3 to 0.6
Molybdenum (Mo), % 15 to 17
0
Nickel (Ni), % 49.5 to 63
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.080
0
Sulfur (S), % 0 to 0.020
0 to 0.050
Titanium (Ti), % 0.020 to 0.25
0
Tungsten (W), % 3.0 to 4.4
0