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AS41B Magnesium vs. C72900 Copper-nickel

AS41B magnesium belongs to the magnesium alloys classification, while C72900 copper-nickel belongs to the copper alloys. There are 29 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 AS41B magnesium and the bottom bar is C72900 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
120
Elongation at Break, % 6.0
6.0 to 20
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
45
Shear Strength, MPa 120
540 to 630
Tensile Strength: Ultimate (UTS), MPa 210
870 to 1080
Tensile Strength: Yield (Proof), MPa 140
700 to 920

Thermal Properties

Latent Heat of Fusion, J/g 370
210
Maximum Temperature: Mechanical, °C 110
210
Melting Completion (Liquidus), °C 620
1120
Melting Onset (Solidus), °C 570
950
Specific Heat Capacity, J/kg-K 1000
380
Thermal Conductivity, W/m-K 68
29
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 92
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 12
39
Density, g/cm3 1.7
8.8
Embodied Carbon, kg CO2/kg material 23
4.6
Embodied Energy, MJ/kg 160
72
Embodied Water, L/kg 980
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
49 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 220
2030 to 3490
Stiffness to Weight: Axial, points 15
7.6
Stiffness to Weight: Bending, points 72
19
Strength to Weight: Axial, points 35
27 to 34
Strength to Weight: Bending, points 47
23 to 27
Thermal Diffusivity, mm2/s 41
8.6
Thermal Shock Resistance, points 13
31 to 38

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0
Copper (Cu), % 0 to 0.020
74.1 to 78
Iron (Fe), % 0 to 0.0035
0 to 0.5
Lead (Pb), % 0
0 to 0.020
Magnesium (Mg), % 92.7 to 95.7
0 to 0.15
Manganese (Mn), % 0.35 to 0.7
0 to 0.3
Nickel (Ni), % 0 to 0.0020
14.5 to 15.5
Niobium (Nb), % 0
0 to 0.1
Silicon (Si), % 0.5 to 1.5
0
Tin (Sn), % 0
7.5 to 8.5
Zinc (Zn), % 0 to 0.12
0 to 0.5
Residuals, % 0
0 to 0.3