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Nickel 686 vs. S21460 Stainless Steel

Nickel 686 belongs to the nickel alloys classification, while S21460 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 26 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is nickel 686 and the bottom bar is S21460 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Elongation at Break, % 51
46
Fatigue Strength, MPa 410
390
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 560
580
Tensile Strength: Ultimate (UTS), MPa 780
830
Tensile Strength: Yield (Proof), MPa 350
430

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Maximum Temperature: Mechanical, °C 980
920
Melting Completion (Liquidus), °C 1380
1380
Melting Onset (Solidus), °C 1340
1330
Specific Heat Capacity, J/kg-K 420
480
Thermal Expansion, µm/m-K 12
18

Otherwise Unclassified Properties

Base Metal Price, % relative 70
14
Density, g/cm3 9.0
7.6
Embodied Carbon, kg CO2/kg material 12
3.0
Embodied Energy, MJ/kg 170
43
Embodied Water, L/kg 300
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
320
Resilience: Unit (Modulus of Resilience), kJ/m3 280
460
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 24
30
Strength to Weight: Bending, points 21
26
Thermal Shock Resistance, points 21
17

Alloy Composition

Carbon (C), % 0 to 0.010
0 to 0.12
Chromium (Cr), % 19 to 23
17 to 19
Iron (Fe), % 0 to 5.0
57.3 to 63.7
Manganese (Mn), % 0 to 0.75
14 to 16
Molybdenum (Mo), % 15 to 17
0
Nickel (Ni), % 49.5 to 63
5.0 to 6.0
Nitrogen (N), % 0
0.35 to 0.5
Phosphorus (P), % 0 to 0.040
0 to 0.060
Silicon (Si), % 0 to 0.080
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030
Titanium (Ti), % 0.020 to 0.25
0
Tungsten (W), % 3.0 to 4.4
0