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C87400 Brass vs. ZC63A Magnesium

C87400 brass belongs to the copper alloys classification, while ZC63A magnesium belongs to the magnesium 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 C87400 brass and the bottom bar is ZC63A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
48
Elongation at Break, % 21
3.3
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 41
19
Tensile Strength: Ultimate (UTS), MPa 390
220
Tensile Strength: Yield (Proof), MPa 160
130

Thermal Properties

Latent Heat of Fusion, J/g 250
330
Maximum Temperature: Mechanical, °C 170
98
Melting Completion (Liquidus), °C 920
550
Melting Onset (Solidus), °C 820
470
Specific Heat Capacity, J/kg-K 400
950
Thermal Conductivity, W/m-K 28
120
Thermal Expansion, µm/m-K 18
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.7
32
Electrical Conductivity: Equal Weight (Specific), % IACS 7.2
140

Otherwise Unclassified Properties

Base Metal Price, % relative 27
13
Density, g/cm3 8.3
2.1
Embodied Carbon, kg CO2/kg material 2.7
22
Embodied Energy, MJ/kg 44
150
Embodied Water, L/kg 310
920

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 65
6.3
Resilience: Unit (Modulus of Resilience), kJ/m3 120
190
Stiffness to Weight: Axial, points 7.4
13
Stiffness to Weight: Bending, points 19
58
Strength to Weight: Axial, points 13
29
Strength to Weight: Bending, points 14
38
Thermal Diffusivity, mm2/s 8.3
58
Thermal Shock Resistance, points 14
12

Alloy Composition

Aluminum (Al), % 0 to 0.8
0
Copper (Cu), % 79 to 85.5
2.4 to 3.0
Lead (Pb), % 0 to 1.0
0
Magnesium (Mg), % 0
89.2 to 91.9
Manganese (Mn), % 0
0.25 to 0.75
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 2.5 to 4.0
0 to 0.2
Zinc (Zn), % 12 to 16
5.5 to 6.5
Residuals, % 0
0 to 0.3