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ZC63A Magnesium vs. C68800 Brass

ZC63A magnesium belongs to the magnesium alloys classification, while C68800 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 C68800 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 48
110
Elongation at Break, % 3.3
2.0 to 36
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 19
41
Shear Strength, MPa 130
380 to 510
Tensile Strength: Ultimate (UTS), MPa 220
570 to 890
Tensile Strength: Yield (Proof), MPa 130
390 to 790

Thermal Properties

Latent Heat of Fusion, J/g 330
190
Maximum Temperature: Mechanical, °C 98
160
Melting Completion (Liquidus), °C 550
960
Melting Onset (Solidus), °C 470
950
Specific Heat Capacity, J/kg-K 950
400
Thermal Conductivity, W/m-K 120
40
Thermal Expansion, µm/m-K 26
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
18
Electrical Conductivity: Equal Weight (Specific), % IACS 140
20

Otherwise Unclassified Properties

Base Metal Price, % relative 13
26
Density, g/cm3 2.1
8.2
Embodied Carbon, kg CO2/kg material 22
2.8
Embodied Energy, MJ/kg 150
48
Embodied Water, L/kg 920
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.3
16 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 190
710 to 2860
Stiffness to Weight: Axial, points 13
7.3
Stiffness to Weight: Bending, points 58
19
Strength to Weight: Axial, points 29
19 to 30
Strength to Weight: Bending, points 38
19 to 25
Thermal Diffusivity, mm2/s 58
12
Thermal Shock Resistance, points 12
19 to 30

Alloy Composition

Aluminum (Al), % 0
3.0 to 3.8
Cobalt (Co), % 0
0.25 to 0.55
Copper (Cu), % 2.4 to 3.0
70.8 to 75.5
Iron (Fe), % 0
0 to 0.2
Lead (Pb), % 0
0 to 0.050
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
21.3 to 24.1
Residuals, % 0 to 0.3
0 to 0.5