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ZC63A Magnesium vs. C37700 Brass

ZC63A magnesium belongs to the magnesium alloys classification, while C37700 brass belongs to the copper alloys. There are 29 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 ZC63A magnesium and the bottom bar is C37700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 48
100
Elongation at Break, % 3.3
40
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 19
39
Shear Strength, MPa 130
270
Tensile Strength: Ultimate (UTS), MPa 220
400
Tensile Strength: Yield (Proof), MPa 130
160

Thermal Properties

Latent Heat of Fusion, J/g 330
170
Maximum Temperature: Mechanical, °C 98
120
Melting Completion (Liquidus), °C 550
890
Melting Onset (Solidus), °C 470
880
Specific Heat Capacity, J/kg-K 950
380
Thermal Conductivity, W/m-K 120
120
Thermal Expansion, µm/m-K 26
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
27
Electrical Conductivity: Equal Weight (Specific), % IACS 140
30

Otherwise Unclassified Properties

Base Metal Price, % relative 13
23
Density, g/cm3 2.1
8.1
Embodied Carbon, kg CO2/kg material 22
2.6
Embodied Energy, MJ/kg 150
45
Embodied Water, L/kg 920
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.3
130
Resilience: Unit (Modulus of Resilience), kJ/m3 190
120
Stiffness to Weight: Axial, points 13
7.1
Stiffness to Weight: Bending, points 58
19
Strength to Weight: Axial, points 29
14
Strength to Weight: Bending, points 38
15
Thermal Diffusivity, mm2/s 58
39
Thermal Shock Resistance, points 12
13

Alloy Composition

Copper (Cu), % 2.4 to 3.0
58 to 61
Iron (Fe), % 0
0 to 0.3
Lead (Pb), % 0
1.5 to 2.5
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
35.7 to 40.5
Residuals, % 0 to 0.3
0 to 0.5