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Nickel 686 vs. S44735 Stainless Steel

Nickel 686 belongs to the nickel alloys classification, while S44735 stainless steel belongs to the iron alloys. They have a modest 28% 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 (8, in this case) are not shown.

For each property being compared, the top bar is nickel 686 and the bottom bar is S44735 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
210
Elongation at Break, % 51
21
Fatigue Strength, MPa 410
300
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 77
82
Shear Strength, MPa 560
390
Tensile Strength: Ultimate (UTS), MPa 780
630
Tensile Strength: Yield (Proof), MPa 350
460

Thermal Properties

Latent Heat of Fusion, J/g 320
310
Maximum Temperature: Mechanical, °C 980
1100
Melting Completion (Liquidus), °C 1380
1460
Melting Onset (Solidus), °C 1340
1420
Specific Heat Capacity, J/kg-K 420
480
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 70
21
Density, g/cm3 9.0
7.7
Embodied Carbon, kg CO2/kg material 12
4.4
Embodied Energy, MJ/kg 170
61
Embodied Water, L/kg 300
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
120
Resilience: Unit (Modulus of Resilience), kJ/m3 280
520
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 22
26
Strength to Weight: Axial, points 24
23
Strength to Weight: Bending, points 21
21
Thermal Shock Resistance, points 21
20

Alloy Composition

Carbon (C), % 0 to 0.010
0 to 0.030
Chromium (Cr), % 19 to 23
28 to 30
Iron (Fe), % 0 to 5.0
60.7 to 68.4
Manganese (Mn), % 0 to 0.75
0 to 1.0
Molybdenum (Mo), % 15 to 17
3.6 to 4.2
Nickel (Ni), % 49.5 to 63
0 to 1.0
Niobium (Nb), % 0
0.2 to 1.0
Nitrogen (N), % 0
0 to 0.045
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 0.030
Titanium (Ti), % 0.020 to 0.25
0.2 to 1.0
Tungsten (W), % 3.0 to 4.4
0