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ZC63A Magnesium vs. C66700 Brass

ZC63A magnesium belongs to the magnesium alloys classification, while C66700 brass belongs to the copper alloys. There are 29 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 ZC63A magnesium and the bottom bar is C66700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 48
110
Elongation at Break, % 3.3
2.0 to 58
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 19
41
Shear Strength, MPa 130
250 to 530
Tensile Strength: Ultimate (UTS), MPa 220
340 to 690
Tensile Strength: Yield (Proof), MPa 130
100 to 640

Thermal Properties

Latent Heat of Fusion, J/g 330
180
Maximum Temperature: Mechanical, °C 98
140
Melting Completion (Liquidus), °C 550
1090
Melting Onset (Solidus), °C 470
1050
Specific Heat Capacity, J/kg-K 950
390
Thermal Conductivity, W/m-K 120
97
Thermal Expansion, µm/m-K 26
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
17
Electrical Conductivity: Equal Weight (Specific), % IACS 140
19

Otherwise Unclassified Properties

Base Metal Price, % relative 13
25
Density, g/cm3 2.1
8.2
Embodied Carbon, kg CO2/kg material 22
2.7
Embodied Energy, MJ/kg 150
45
Embodied Water, L/kg 920
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.3
13 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 190
49 to 1900
Stiffness to Weight: Axial, points 13
7.3
Stiffness to Weight: Bending, points 58
19
Strength to Weight: Axial, points 29
11 to 23
Strength to Weight: Bending, points 38
13 to 21
Thermal Diffusivity, mm2/s 58
30
Thermal Shock Resistance, points 12
11 to 23

Alloy Composition

Copper (Cu), % 2.4 to 3.0
68.5 to 71.5
Iron (Fe), % 0
0 to 0.1
Lead (Pb), % 0
0 to 0.070
Magnesium (Mg), % 89.2 to 91.9
0
Manganese (Mn), % 0.25 to 0.75
0.8 to 1.5
Nickel (Ni), % 0 to 0.010
0
Silicon (Si), % 0 to 0.2
0
Zinc (Zn), % 5.5 to 6.5
26.3 to 30.7
Residuals, % 0 to 0.3
0 to 0.5