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Nickel 690 vs. Nickel 686

Both nickel 690 and nickel 686 are nickel alloys. They have 80% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is nickel 690 and the bottom bar is nickel 686.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 3.4 to 34
51
Fatigue Strength, MPa 180 to 300
410
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
77
Shear Strength, MPa 420 to 570
560
Tensile Strength: Ultimate (UTS), MPa 640 to 990
780
Tensile Strength: Yield (Proof), MPa 250 to 760
350

Thermal Properties

Latent Heat of Fusion, J/g 320
320
Maximum Temperature: Mechanical, °C 1010
980
Melting Completion (Liquidus), °C 1380
1380
Melting Onset (Solidus), °C 1340
1340
Specific Heat Capacity, J/kg-K 470
420
Thermal Conductivity, W/m-K 14
9.8
Thermal Expansion, µm/m-K 14
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 1.6
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 50
70
Density, g/cm3 8.3
9.0
Embodied Carbon, kg CO2/kg material 8.2
12
Embodied Energy, MJ/kg 120
170
Embodied Water, L/kg 290
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31 to 170
320
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 1440
280
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 21 to 33
24
Strength to Weight: Bending, points 20 to 27
21
Thermal Diffusivity, mm2/s 3.5
2.6
Thermal Shock Resistance, points 16 to 25
21

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.010
Chromium (Cr), % 27 to 31
19 to 23
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 7.0 to 11
0 to 5.0
Manganese (Mn), % 0 to 0.5
0 to 0.75
Molybdenum (Mo), % 0
15 to 17
Nickel (Ni), % 58 to 66
49.5 to 63
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 0.080
Sulfur (S), % 0 to 0.015
0 to 0.020
Titanium (Ti), % 0
0.020 to 0.25
Tungsten (W), % 0
3.0 to 4.4