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Monel 400 vs. Nickel 686

Both Monel 400 and nickel 686 are nickel alloys. They have 58% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is Monel 400 and the bottom bar is nickel 686.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
220
Elongation at Break, % 20 to 40
51
Fatigue Strength, MPa 230 to 290
410
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 62
77
Shear Strength, MPa 370 to 490
560
Tensile Strength: Ultimate (UTS), MPa 540 to 780
780
Tensile Strength: Yield (Proof), MPa 210 to 590
350

Thermal Properties

Latent Heat of Fusion, J/g 270
320
Maximum Temperature: Mechanical, °C 1000
980
Melting Completion (Liquidus), °C 1350
1380
Melting Onset (Solidus), °C 1300
1340
Specific Heat Capacity, J/kg-K 430
420
Thermal Conductivity, W/m-K 23
9.8
Thermal Expansion, µm/m-K 14
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.3
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 50
70
Density, g/cm3 8.9
9.0
Embodied Carbon, kg CO2/kg material 7.9
12
Embodied Energy, MJ/kg 110
170
Embodied Water, L/kg 250
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 180
320
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 1080
280
Stiffness to Weight: Axial, points 10
14
Stiffness to Weight: Bending, points 21
22
Strength to Weight: Axial, points 17 to 25
24
Strength to Weight: Bending, points 17 to 21
21
Thermal Diffusivity, mm2/s 6.1
2.6
Thermal Shock Resistance, points 17 to 25
21

Alloy Composition

Carbon (C), % 0 to 0.3
0 to 0.010
Chromium (Cr), % 0
19 to 23
Copper (Cu), % 28 to 34
0
Iron (Fe), % 0 to 2.5
0 to 5.0
Manganese (Mn), % 0 to 2.0
0 to 0.75
Molybdenum (Mo), % 0
15 to 17
Nickel (Ni), % 63 to 72
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 0.024
0 to 0.020
Titanium (Ti), % 0
0.020 to 0.25
Tungsten (W), % 0
3.0 to 4.4