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CC766S Brass vs. ZK51A Magnesium

CC766S brass belongs to the copper alloys classification, while ZK51A 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 CC766S brass and the bottom bar is ZK51A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
45
Elongation at Break, % 28
4.7
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 40
18
Tensile Strength: Ultimate (UTS), MPa 500
240
Tensile Strength: Yield (Proof), MPa 190
150

Thermal Properties

Latent Heat of Fusion, J/g 180
340
Maximum Temperature: Mechanical, °C 130
120
Melting Completion (Liquidus), °C 840
640
Melting Onset (Solidus), °C 800
550
Specific Heat Capacity, J/kg-K 390
970
Thermal Conductivity, W/m-K 89
110
Thermal Expansion, µm/m-K 20
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
28
Electrical Conductivity: Equal Weight (Specific), % IACS 36
140

Otherwise Unclassified Properties

Base Metal Price, % relative 24
13
Density, g/cm3 8.0
1.8
Embodied Carbon, kg CO2/kg material 2.8
24
Embodied Energy, MJ/kg 48
160
Embodied Water, L/kg 330
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
10
Resilience: Unit (Modulus of Resilience), kJ/m3 180
260
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 20
64
Strength to Weight: Axial, points 17
36
Strength to Weight: Bending, points 18
47
Thermal Diffusivity, mm2/s 28
61
Thermal Shock Resistance, points 17
15

Alloy Composition

Aluminum (Al), % 0.3 to 1.8
0
Antimony (Sb), % 0 to 0.1
0
Copper (Cu), % 58 to 64
0 to 0.1
Iron (Fe), % 0 to 0.5
0
Lead (Pb), % 0 to 0.5
0
Magnesium (Mg), % 0
93.1 to 95.9
Manganese (Mn), % 0 to 0.5
0
Nickel (Ni), % 0 to 2.0
0 to 0.010
Silicon (Si), % 0 to 0.6
0
Tin (Sn), % 0 to 0.5
0
Zinc (Zn), % 29.5 to 41.7
3.6 to 5.5
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3