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Nickel 686 vs. S40910 Stainless Steel

Nickel 686 belongs to the nickel alloys classification, while S40910 stainless steel belongs to the iron alloys. 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 S40910 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 51
23
Fatigue Strength, MPa 410
130
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
75
Shear Strength, MPa 560
270
Tensile Strength: Ultimate (UTS), MPa 780
430
Tensile Strength: Yield (Proof), MPa 350
190

Thermal Properties

Latent Heat of Fusion, J/g 320
270
Maximum Temperature: Mechanical, °C 980
710
Melting Completion (Liquidus), °C 1380
1450
Melting Onset (Solidus), °C 1340
1410
Specific Heat Capacity, J/kg-K 420
480
Thermal Conductivity, W/m-K 9.8
26
Thermal Expansion, µm/m-K 12
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 1.4
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 70
7.0
Density, g/cm3 9.0
7.8
Embodied Carbon, kg CO2/kg material 12
2.0
Embodied Energy, MJ/kg 170
28
Embodied Water, L/kg 300
94

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
80
Resilience: Unit (Modulus of Resilience), kJ/m3 280
94
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 24
16
Strength to Weight: Bending, points 21
16
Thermal Diffusivity, mm2/s 2.6
6.9
Thermal Shock Resistance, points 21
16

Alloy Composition

Carbon (C), % 0 to 0.010
0 to 0.030
Chromium (Cr), % 19 to 23
10.5 to 11.7
Iron (Fe), % 0 to 5.0
85 to 89.5
Manganese (Mn), % 0 to 0.75
0 to 1.0
Molybdenum (Mo), % 15 to 17
0
Nickel (Ni), % 49.5 to 63
0 to 0.5
Niobium (Nb), % 0
0 to 0.17
Nitrogen (N), % 0
0 to 0.030
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 to 0.5
Tungsten (W), % 3.0 to 4.4
0