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C43500 Brass vs. ZK51A Magnesium

C43500 brass belongs to the copper alloys classification, while ZK51A magnesium belongs to the magnesium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, 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 C43500 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, % 8.5 to 46
4.7
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 42
18
Shear Strength, MPa 220 to 310
160
Tensile Strength: Ultimate (UTS), MPa 320 to 530
240
Tensile Strength: Yield (Proof), MPa 120 to 480
150

Thermal Properties

Latent Heat of Fusion, J/g 190
340
Maximum Temperature: Mechanical, °C 160
120
Melting Completion (Liquidus), °C 1000
640
Melting Onset (Solidus), °C 970
550
Specific Heat Capacity, J/kg-K 380
970
Thermal Conductivity, W/m-K 120
110
Thermal Expansion, µm/m-K 19
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 28
28
Electrical Conductivity: Equal Weight (Specific), % IACS 30
140

Otherwise Unclassified Properties

Base Metal Price, % relative 28
13
Density, g/cm3 8.5
1.8
Embodied Carbon, kg CO2/kg material 2.7
24
Embodied Energy, MJ/kg 45
160
Embodied Water, L/kg 320
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 44 to 120
10
Resilience: Unit (Modulus of Resilience), kJ/m3 65 to 1040
260
Stiffness to Weight: Axial, points 7.2
14
Stiffness to Weight: Bending, points 19
64
Strength to Weight: Axial, points 10 to 17
36
Strength to Weight: Bending, points 12 to 17
47
Thermal Diffusivity, mm2/s 37
61
Thermal Shock Resistance, points 11 to 18
15

Alloy Composition

Copper (Cu), % 79 to 83
0 to 0.1
Iron (Fe), % 0 to 0.050
0
Lead (Pb), % 0 to 0.090
0
Magnesium (Mg), % 0
93.1 to 95.9
Nickel (Ni), % 0
0 to 0.010
Tin (Sn), % 0.6 to 1.2
0
Zinc (Zn), % 15.4 to 20.4
3.6 to 5.5
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3