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C69300 Brass vs. ZC63A Magnesium

C69300 brass belongs to the copper alloys classification, while ZC63A magnesium belongs to the magnesium 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 C69300 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, % 8.5 to 15
3.3
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
19
Shear Strength, MPa 330 to 370
130
Tensile Strength: Ultimate (UTS), MPa 550 to 630
220
Tensile Strength: Yield (Proof), MPa 300 to 390
130

Thermal Properties

Latent Heat of Fusion, J/g 240
330
Maximum Temperature: Mechanical, °C 160
98
Melting Completion (Liquidus), °C 880
550
Melting Onset (Solidus), °C 860
470
Specific Heat Capacity, J/kg-K 400
950
Thermal Conductivity, W/m-K 38
120
Thermal Expansion, µm/m-K 19
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
32
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
140

Otherwise Unclassified Properties

Base Metal Price, % relative 26
13
Density, g/cm3 8.2
2.1
Embodied Carbon, kg CO2/kg material 2.7
22
Embodied Energy, MJ/kg 45
150
Embodied Water, L/kg 310
920

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 47 to 70
6.3
Resilience: Unit (Modulus of Resilience), kJ/m3 400 to 700
190
Stiffness to Weight: Axial, points 7.4
13
Stiffness to Weight: Bending, points 19
58
Strength to Weight: Axial, points 19 to 21
29
Strength to Weight: Bending, points 18 to 20
38
Thermal Diffusivity, mm2/s 12
58
Thermal Shock Resistance, points 19 to 22
12

Alloy Composition

Copper (Cu), % 73 to 77
2.4 to 3.0
Iron (Fe), % 0 to 0.1
0
Lead (Pb), % 0 to 0.090
0
Magnesium (Mg), % 0
89.2 to 91.9
Manganese (Mn), % 0 to 0.1
0.25 to 0.75
Nickel (Ni), % 0 to 0.1
0 to 0.010
Phosphorus (P), % 0.040 to 0.15
0
Silicon (Si), % 2.7 to 3.4
0 to 0.2
Tin (Sn), % 0 to 0.2
0
Zinc (Zn), % 18.4 to 24.3
5.5 to 6.5
Residuals, % 0 to 0.5
0 to 0.3