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ISO-WD43150 Magnesium vs. Nickel 685

ISO-WD43150 magnesium belongs to the magnesium alloys classification, while nickel 685 belongs to the nickel alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, 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 ISO-WD43150 magnesium and the bottom bar is nickel 685.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 2.8
17
Fatigue Strength, MPa 100
470
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
77
Shear Strength, MPa 140
770
Tensile Strength: Ultimate (UTS), MPa 250
1250
Tensile Strength: Yield (Proof), MPa 150
850

Thermal Properties

Latent Heat of Fusion, J/g 350
320
Maximum Temperature: Mechanical, °C 95
1000
Melting Completion (Liquidus), °C 610
1380
Melting Onset (Solidus), °C 590
1330
Specific Heat Capacity, J/kg-K 990
460
Thermal Conductivity, W/m-K 140
13
Thermal Expansion, µm/m-K 27
12

Otherwise Unclassified Properties

Base Metal Price, % relative 12
75
Density, g/cm3 1.7
8.4
Embodied Carbon, kg CO2/kg material 24
10
Embodied Energy, MJ/kg 160
140
Embodied Water, L/kg 970
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.1
190
Resilience: Unit (Modulus of Resilience), kJ/m3 250
1820
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 71
23
Strength to Weight: Axial, points 41
42
Strength to Weight: Bending, points 52
31
Thermal Diffusivity, mm2/s 81
3.3
Thermal Shock Resistance, points 14
37

Alloy Composition

Aluminum (Al), % 0
1.2 to 1.6
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0
0.030 to 0.1
Chromium (Cr), % 0
18 to 21
Cobalt (Co), % 0
12 to 15
Copper (Cu), % 0 to 0.050
0 to 0.5
Iron (Fe), % 0
0 to 2.0
Magnesium (Mg), % 97.5 to 98.8
0
Manganese (Mn), % 1.2 to 2.0
0 to 1.0
Molybdenum (Mo), % 0
3.5 to 5.0
Nickel (Ni), % 0 to 0.010
49.6 to 62.5
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.1
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0
2.8 to 3.3
Zinc (Zn), % 0
0.020 to 0.12
Residuals, % 0 to 0.3
0