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Nickel 686 vs. S33550 Stainless Steel

Nickel 686 belongs to the nickel alloys classification, while S33550 stainless steel belongs to the iron alloys. They have 42% of their average alloy composition in common. 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 S33550 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Elongation at Break, % 51
40
Fatigue Strength, MPa 410
270
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 77
79
Shear Strength, MPa 560
470
Tensile Strength: Ultimate (UTS), MPa 780
680
Tensile Strength: Yield (Proof), MPa 350
310

Thermal Properties

Latent Heat of Fusion, J/g 320
300
Maximum Temperature: Mechanical, °C 980
1100
Melting Completion (Liquidus), °C 1380
1400
Melting Onset (Solidus), °C 1340
1360
Specific Heat Capacity, J/kg-K 420
480
Thermal Conductivity, W/m-K 9.8
15
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 1.4
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 70
24
Density, g/cm3 9.0
7.8
Embodied Carbon, kg CO2/kg material 12
4.3
Embodied Energy, MJ/kg 170
61
Embodied Water, L/kg 300
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
220
Resilience: Unit (Modulus of Resilience), kJ/m3 280
250
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 24
24
Strength to Weight: Bending, points 21
22
Thermal Diffusivity, mm2/s 2.6
3.9
Thermal Shock Resistance, points 21
15

Alloy Composition

Carbon (C), % 0 to 0.010
0.040 to 0.1
Cerium (Ce), % 0
0.025 to 0.070
Chromium (Cr), % 19 to 23
25 to 28
Iron (Fe), % 0 to 5.0
48.8 to 58.2
Lanthanum (La), % 0
0.025 to 0.070
Manganese (Mn), % 0 to 0.75
0 to 1.5
Molybdenum (Mo), % 15 to 17
0
Nickel (Ni), % 49.5 to 63
16.5 to 20
Niobium (Nb), % 0
0.050 to 0.15
Nitrogen (N), % 0
0.18 to 0.25
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
Tungsten (W), % 3.0 to 4.4
0