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C69700 Brass vs. ZE63A Magnesium

C69700 brass belongs to the copper alloys classification, while ZE63A magnesium belongs to the magnesium alloys. There are 27 material properties with values for both materials. Properties with values for just one material (7, 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 C69700 brass and the bottom bar is ZE63A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
46
Elongation at Break, % 25
7.7
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
17
Shear Strength, MPa 300
170
Tensile Strength: Ultimate (UTS), MPa 470
300
Tensile Strength: Yield (Proof), MPa 230
190

Thermal Properties

Latent Heat of Fusion, J/g 240
330
Maximum Temperature: Mechanical, °C 160
170
Melting Completion (Liquidus), °C 930
510
Melting Onset (Solidus), °C 880
390
Specific Heat Capacity, J/kg-K 400
950
Thermal Conductivity, W/m-K 43
110
Thermal Expansion, µm/m-K 19
27

Otherwise Unclassified Properties

Base Metal Price, % relative 26
22
Density, g/cm3 8.3
2.0
Embodied Carbon, kg CO2/kg material 2.7
24
Embodied Energy, MJ/kg 44
180
Embodied Water, L/kg 310
920

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 99
20
Resilience: Unit (Modulus of Resilience), kJ/m3 250
400
Stiffness to Weight: Axial, points 7.3
12
Stiffness to Weight: Bending, points 19
58
Strength to Weight: Axial, points 16
40
Strength to Weight: Bending, points 16
48
Thermal Diffusivity, mm2/s 13
57
Thermal Shock Resistance, points 16
17

Alloy Composition

Copper (Cu), % 75 to 80
0 to 0.1
Iron (Fe), % 0 to 0.2
0
Lead (Pb), % 0.5 to 1.5
0
Magnesium (Mg), % 0
89.6 to 92
Manganese (Mn), % 0 to 0.4
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 2.5 to 3.5
0
Unspecified Rare Earths, % 0
2.1 to 3.0
Zinc (Zn), % 13.9 to 22
5.5 to 6.0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3