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AM50A Magnesium vs. Nickel 686

AM50A magnesium belongs to the magnesium alloys classification, while nickel 686 belongs to the nickel alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is AM50A magnesium and the bottom bar is nickel 686.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
220
Elongation at Break, % 11
51
Fatigue Strength, MPa 70
410
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
77
Shear Strength, MPa 120
560
Tensile Strength: Ultimate (UTS), MPa 210
780
Tensile Strength: Yield (Proof), MPa 120
350

Thermal Properties

Latent Heat of Fusion, J/g 350
320
Maximum Temperature: Mechanical, °C 120
980
Melting Completion (Liquidus), °C 620
1380
Melting Onset (Solidus), °C 570
1340
Specific Heat Capacity, J/kg-K 1000
420
Thermal Conductivity, W/m-K 65
9.8
Thermal Expansion, µm/m-K 26
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 88
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 12
70
Density, g/cm3 1.7
9.0
Embodied Carbon, kg CO2/kg material 23
12
Embodied Energy, MJ/kg 160
170
Embodied Water, L/kg 990
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
320
Resilience: Unit (Modulus of Resilience), kJ/m3 150
280
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 71
22
Strength to Weight: Axial, points 35
24
Strength to Weight: Bending, points 47
21
Thermal Diffusivity, mm2/s 39
2.6
Thermal Shock Resistance, points 13
21

Alloy Composition

Aluminum (Al), % 4.4 to 5.4
0
Carbon (C), % 0
0 to 0.010
Chromium (Cr), % 0
19 to 23
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0040
0 to 5.0
Magnesium (Mg), % 93.7 to 95.3
0
Manganese (Mn), % 0.26 to 0.6
0 to 0.75
Molybdenum (Mo), % 0
15 to 17
Nickel (Ni), % 0 to 0.0020
49.5 to 63
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.1
0 to 0.080
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0
0.020 to 0.25
Tungsten (W), % 0
3.0 to 4.4
Zinc (Zn), % 0 to 0.22
0