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Nickel 686 vs. S30615 Stainless Steel

Nickel 686 belongs to the nickel alloys classification, while S30615 stainless steel belongs to the iron alloys. They have a modest 36% of their average alloy composition in common, which, by itself, doesn't mean much. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is nickel 686 and the bottom bar is S30615 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 51
39
Fatigue Strength, MPa 410
270
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
75
Shear Strength, MPa 560
470
Tensile Strength: Ultimate (UTS), MPa 780
690
Tensile Strength: Yield (Proof), MPa 350
310

Thermal Properties

Latent Heat of Fusion, J/g 320
340
Maximum Temperature: Mechanical, °C 980
960
Melting Completion (Liquidus), °C 1380
1370
Melting Onset (Solidus), °C 1340
1320
Specific Heat Capacity, J/kg-K 420
500
Thermal Conductivity, W/m-K 9.8
14
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 70
19
Density, g/cm3 9.0
7.6
Embodied Carbon, kg CO2/kg material 12
3.7
Embodied Energy, MJ/kg 170
53
Embodied Water, L/kg 300
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
220
Resilience: Unit (Modulus of Resilience), kJ/m3 280
260
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 24
25
Strength to Weight: Bending, points 21
23
Thermal Diffusivity, mm2/s 2.6
3.7
Thermal Shock Resistance, points 21
16

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.5
Carbon (C), % 0 to 0.010
0.16 to 0.24
Chromium (Cr), % 19 to 23
17 to 19.5
Iron (Fe), % 0 to 5.0
56.7 to 65.3
Manganese (Mn), % 0 to 0.75
0 to 2.0
Molybdenum (Mo), % 15 to 17
0
Nickel (Ni), % 49.5 to 63
13.5 to 16
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.080
3.2 to 4.0
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