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C63800 Bronze vs. ZK61A Magnesium

C63800 bronze belongs to the copper alloys classification, while ZK61A magnesium belongs to the magnesium alloys. There are 26 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 C63800 bronze and the bottom bar is ZK61A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
46
Elongation at Break, % 7.9 to 41
5.8 to 7.1
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 43
18
Shear Strength, MPa 320 to 500
170 to 180
Tensile Strength: Ultimate (UTS), MPa 460 to 1010
290 to 310

Thermal Properties

Latent Heat of Fusion, J/g 240
330
Maximum Temperature: Mechanical, °C 200
120
Melting Completion (Liquidus), °C 1030
640
Melting Onset (Solidus), °C 1000
530
Specific Heat Capacity, J/kg-K 410
960
Thermal Conductivity, W/m-K 40
120
Thermal Expansion, µm/m-K 17
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
29
Electrical Conductivity: Equal Weight (Specific), % IACS 10
130

Otherwise Unclassified Properties

Base Metal Price, % relative 30
13
Density, g/cm3 8.6
1.9
Embodied Carbon, kg CO2/kg material 2.8
23
Embodied Energy, MJ/kg 45
160
Embodied Water, L/kg 330
940

Common Calculations

Stiffness to Weight: Axial, points 7.4
13
Stiffness to Weight: Bending, points 19
62
Strength to Weight: Axial, points 15 to 33
42 to 45
Strength to Weight: Bending, points 15 to 26
50 to 53
Thermal Diffusivity, mm2/s 11
65
Thermal Shock Resistance, points 17 to 36
17 to 18

Alloy Composition

Aluminum (Al), % 2.5 to 3.1
0
Cobalt (Co), % 0.25 to 0.55
0
Copper (Cu), % 92.4 to 95.8
0 to 0.1
Iron (Fe), % 0 to 0.2
0
Lead (Pb), % 0 to 0.050
0
Magnesium (Mg), % 0
92.1 to 93.9
Manganese (Mn), % 0 to 0.1
0
Nickel (Ni), % 0 to 0.2
0 to 0.010
Silicon (Si), % 1.5 to 2.1
0
Zinc (Zn), % 0 to 0.8
5.5 to 6.5
Zirconium (Zr), % 0
0.6 to 1.0
Residuals, % 0
0 to 0.3