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Nickel 686 vs. S21603 Stainless Steel

Nickel 686 belongs to the nickel alloys classification, while S21603 stainless steel belongs to the iron alloys. They have a modest 31% 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 (9, in this case) are not shown.

For each property being compared, the top bar is nickel 686 and the bottom bar is S21603 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Elongation at Break, % 51
45
Fatigue Strength, MPa 410
360
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
79
Shear Strength, MPa 560
490
Tensile Strength: Ultimate (UTS), MPa 780
690
Tensile Strength: Yield (Proof), MPa 350
390

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Maximum Temperature: Mechanical, °C 980
990
Melting Completion (Liquidus), °C 1380
1420
Melting Onset (Solidus), °C 1340
1380
Specific Heat Capacity, J/kg-K 420
480
Thermal Expansion, µm/m-K 12
17

Otherwise Unclassified Properties

Base Metal Price, % relative 70
17
Density, g/cm3 9.0
7.7
Embodied Carbon, kg CO2/kg material 12
3.6
Embodied Energy, MJ/kg 170
50
Embodied Water, L/kg 300
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
270
Resilience: Unit (Modulus of Resilience), kJ/m3 280
380
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
22
Thermal Shock Resistance, points 21
15

Alloy Composition

Carbon (C), % 0 to 0.010
0 to 0.030
Chromium (Cr), % 19 to 23
17.5 to 22
Iron (Fe), % 0 to 5.0
57.6 to 67.8
Manganese (Mn), % 0 to 0.75
7.5 to 9.0
Molybdenum (Mo), % 15 to 17
2.0 to 3.0
Nickel (Ni), % 49.5 to 63
5.0 to 7.0
Nitrogen (N), % 0
0.25 to 0.5
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 0.080
0 to 0.75
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