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Nickel 686 vs. S82011 Stainless Steel

Nickel 686 belongs to the nickel alloys classification, while S82011 stainless steel belongs to the iron alloys. They have a modest 26% of their average alloy composition in common, which, by itself, doesn't mean much. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is nickel 686 and the bottom bar is S82011 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Elongation at Break, % 51
34
Fatigue Strength, MPa 410
410
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 77
78
Shear Strength, MPa 560
490
Tensile Strength: Ultimate (UTS), MPa 780
730
Tensile Strength: Yield (Proof), MPa 350
510

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Maximum Temperature: Mechanical, °C 980
1010
Melting Completion (Liquidus), °C 1380
1420
Melting Onset (Solidus), °C 1340
1380
Specific Heat Capacity, J/kg-K 420
480
Thermal Conductivity, W/m-K 9.8
15
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 1.4
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 70
12
Density, g/cm3 9.0
7.7
Embodied Carbon, kg CO2/kg material 12
2.6
Embodied Energy, MJ/kg 170
37
Embodied Water, L/kg 300
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
220
Resilience: Unit (Modulus of Resilience), kJ/m3 280
660
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 24
27
Strength to Weight: Bending, points 21
24
Thermal Diffusivity, mm2/s 2.6
4.0
Thermal Shock Resistance, points 21
20

Alloy Composition

Carbon (C), % 0 to 0.010
0 to 0.030
Chromium (Cr), % 19 to 23
20.5 to 23.5
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 0 to 5.0
68.6 to 76.3
Manganese (Mn), % 0 to 0.75
2.0 to 3.0
Molybdenum (Mo), % 15 to 17
0.1 to 1.0
Nickel (Ni), % 49.5 to 63
1.0 to 2.0
Nitrogen (N), % 0
0.15 to 0.27
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.080
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.020
Titanium (Ti), % 0.020 to 0.25
0
Tungsten (W), % 3.0 to 4.4
0