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AM50A Magnesium vs. Nickel 718

AM50A magnesium belongs to the magnesium alloys classification, while nickel 718 belongs to the nickel 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. 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 718.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 11
12 to 50
Fatigue Strength, MPa 70
460 to 760
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
75
Shear Strength, MPa 120
660 to 950
Tensile Strength: Ultimate (UTS), MPa 210
930 to 1530
Tensile Strength: Yield (Proof), MPa 120
510 to 1330

Thermal Properties

Latent Heat of Fusion, J/g 350
310
Maximum Temperature: Mechanical, °C 120
980
Melting Completion (Liquidus), °C 620
1340
Melting Onset (Solidus), °C 570
1260
Specific Heat Capacity, J/kg-K 1000
450
Thermal Conductivity, W/m-K 65
11
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 88
1.5

Otherwise Unclassified Properties

Base Metal Price, % relative 12
75
Density, g/cm3 1.7
8.3
Embodied Carbon, kg CO2/kg material 23
13
Embodied Energy, MJ/kg 160
190
Embodied Water, L/kg 990
250

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
140 to 390
Resilience: Unit (Modulus of Resilience), kJ/m3 150
660 to 4560
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 71
23
Strength to Weight: Axial, points 35
31 to 51
Strength to Weight: Bending, points 47
25 to 35
Thermal Diffusivity, mm2/s 39
3.0
Thermal Shock Resistance, points 13
27 to 44

Alloy Composition

Aluminum (Al), % 4.4 to 5.4
0.2 to 0.8
Boron (B), % 0
0 to 0.0060
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
17 to 21
Cobalt (Co), % 0
0 to 1.0
Copper (Cu), % 0 to 0.010
0 to 0.3
Iron (Fe), % 0 to 0.0040
11.1 to 24.6
Magnesium (Mg), % 93.7 to 95.3
0
Manganese (Mn), % 0.26 to 0.6
0 to 0.35
Molybdenum (Mo), % 0
2.8 to 3.3
Nickel (Ni), % 0 to 0.0020
50 to 55
Niobium (Nb), % 0
4.8 to 5.5
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0 to 0.1
0 to 0.35
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0
0.65 to 1.2
Zinc (Zn), % 0 to 0.22
0