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Nickel 686 vs. Nickel 80A

Both nickel 686 and nickel 80A are nickel alloys. They have 78% of their average alloy composition in common.

For each property being compared, the top bar is nickel 686 and the bottom bar is nickel 80A.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 51
22
Fatigue Strength, MPa 410
430
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 77
74
Shear Strength, MPa 560
660
Tensile Strength: Ultimate (UTS), MPa 780
1040
Tensile Strength: Yield (Proof), MPa 350
710

Thermal Properties

Latent Heat of Fusion, J/g 320
320
Maximum Temperature: Mechanical, °C 980
980
Melting Completion (Liquidus), °C 1380
1360
Melting Onset (Solidus), °C 1340
1310
Specific Heat Capacity, J/kg-K 420
470
Thermal Conductivity, W/m-K 9.8
11
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 1.4
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 70
55
Density, g/cm3 9.0
8.3
Embodied Carbon, kg CO2/kg material 12
9.8
Embodied Energy, MJ/kg 170
140
Embodied Water, L/kg 300
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
210
Resilience: Unit (Modulus of Resilience), kJ/m3 280
1300
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 22
23
Strength to Weight: Axial, points 24
35
Strength to Weight: Bending, points 21
27
Thermal Diffusivity, mm2/s 2.6
2.9
Thermal Shock Resistance, points 21
31

Alloy Composition

Aluminum (Al), % 0
0.5 to 1.8
Carbon (C), % 0 to 0.010
0 to 0.1
Chromium (Cr), % 19 to 23
18 to 21
Iron (Fe), % 0 to 5.0
0 to 3.0
Manganese (Mn), % 0 to 0.75
0 to 1.0
Molybdenum (Mo), % 15 to 17
0
Nickel (Ni), % 49.5 to 63
69.4 to 79.7
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.080
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.015
Titanium (Ti), % 0.020 to 0.25
1.8 to 2.7
Tungsten (W), % 3.0 to 4.4
0