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Nickel 686 vs. AISI 422 Stainless Steel

Nickel 686 belongs to the nickel alloys classification, while AISI 422 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is nickel 686 and the bottom bar is AISI 422 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Elongation at Break, % 51
15 to 17
Fatigue Strength, MPa 410
410 to 500
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
76
Shear Strength, MPa 560
560 to 660
Tensile Strength: Ultimate (UTS), MPa 780
910 to 1080
Tensile Strength: Yield (Proof), MPa 350
670 to 870

Thermal Properties

Latent Heat of Fusion, J/g 320
270
Maximum Temperature: Mechanical, °C 980
650
Melting Completion (Liquidus), °C 1380
1480
Melting Onset (Solidus), °C 1340
1470
Specific Heat Capacity, J/kg-K 420
470
Thermal Conductivity, W/m-K 9.8
24
Thermal Expansion, µm/m-K 12
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
4.7
Electrical Conductivity: Equal Weight (Specific), % IACS 1.4
5.3

Otherwise Unclassified Properties

Base Metal Price, % relative 70
11
Density, g/cm3 9.0
7.9
Embodied Carbon, kg CO2/kg material 12
3.1
Embodied Energy, MJ/kg 170
44
Embodied Water, L/kg 300
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
140 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 280
1140 to 1910
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 24
32 to 38
Strength to Weight: Bending, points 21
26 to 30
Thermal Diffusivity, mm2/s 2.6
6.4
Thermal Shock Resistance, points 21
33 to 39

Alloy Composition

Carbon (C), % 0 to 0.010
0.2 to 0.25
Chromium (Cr), % 19 to 23
11 to 12.5
Iron (Fe), % 0 to 5.0
81.9 to 85.8
Manganese (Mn), % 0 to 0.75
0.5 to 1.0
Molybdenum (Mo), % 15 to 17
0.9 to 1.3
Nickel (Ni), % 49.5 to 63
0.5 to 1.0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 0.080
0 to 0.5
Sulfur (S), % 0 to 0.020
0 to 0.025
Titanium (Ti), % 0.020 to 0.25
0
Tungsten (W), % 3.0 to 4.4
0.9 to 1.3
Vanadium (V), % 0
0.2 to 0.3