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ZC63A Magnesium vs. C68700 Brass

ZC63A magnesium belongs to the magnesium alloys classification, while C68700 brass belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, 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 ZC63A magnesium and the bottom bar is C68700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 48
110
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 19
41
Tensile Strength: Ultimate (UTS), MPa 220
390
Tensile Strength: Yield (Proof), MPa 130
140

Thermal Properties

Latent Heat of Fusion, J/g 330
190
Maximum Temperature: Mechanical, °C 98
160
Melting Completion (Liquidus), °C 550
970
Melting Onset (Solidus), °C 470
930
Specific Heat Capacity, J/kg-K 950
400
Thermal Conductivity, W/m-K 120
100
Thermal Expansion, µm/m-K 26
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
23
Electrical Conductivity: Equal Weight (Specific), % IACS 140
25

Otherwise Unclassified Properties

Base Metal Price, % relative 13
26
Density, g/cm3 2.1
8.3
Embodied Carbon, kg CO2/kg material 22
2.8
Embodied Energy, MJ/kg 150
46
Embodied Water, L/kg 920
340

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 190
90
Stiffness to Weight: Axial, points 13
7.3
Stiffness to Weight: Bending, points 58
19
Strength to Weight: Axial, points 29
13
Strength to Weight: Bending, points 38
14
Thermal Diffusivity, mm2/s 58
30
Thermal Shock Resistance, points 12
13

Alloy Composition

Aluminum (Al), % 0
1.8 to 2.5
Arsenic (As), % 0
0.020 to 0.1
Copper (Cu), % 2.4 to 3.0
76 to 79
Iron (Fe), % 0
0 to 0.060
Lead (Pb), % 0
0 to 0.070
Magnesium (Mg), % 89.2 to 91.9
0
Manganese (Mn), % 0.25 to 0.75
0
Nickel (Ni), % 0 to 0.010
0
Silicon (Si), % 0 to 0.2
0
Zinc (Zn), % 5.5 to 6.5
17.8 to 22.2
Residuals, % 0 to 0.3
0 to 0.5