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C64700 Bronze vs. ZK61A Magnesium

C64700 bronze belongs to the copper alloys classification, while ZK61A 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 C64700 bronze and the bottom bar is ZK61A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
46
Elongation at Break, % 9.0
5.8 to 7.1
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 44
18
Shear Strength, MPa 390
170 to 180
Tensile Strength: Ultimate (UTS), MPa 660
290 to 310
Tensile Strength: Yield (Proof), MPa 560
180 to 200

Thermal Properties

Latent Heat of Fusion, J/g 220
330
Maximum Temperature: Mechanical, °C 200
120
Melting Completion (Liquidus), °C 1090
640
Melting Onset (Solidus), °C 1030
530
Specific Heat Capacity, J/kg-K 390
960
Thermal Conductivity, W/m-K 210
120
Thermal Expansion, µm/m-K 17
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
29
Electrical Conductivity: Equal Weight (Specific), % IACS 38
130

Otherwise Unclassified Properties

Base Metal Price, % relative 31
13
Density, g/cm3 8.9
1.9
Embodied Carbon, kg CO2/kg material 2.7
23
Embodied Energy, MJ/kg 43
160
Embodied Water, L/kg 310
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 57
15 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 1370
370 to 420
Stiffness to Weight: Axial, points 7.3
13
Stiffness to Weight: Bending, points 18
62
Strength to Weight: Axial, points 21
42 to 45
Strength to Weight: Bending, points 19
50 to 53
Thermal Diffusivity, mm2/s 59
65
Thermal Shock Resistance, points 24
17 to 18

Alloy Composition

Copper (Cu), % 95.8 to 98
0 to 0.1
Iron (Fe), % 0 to 0.1
0
Lead (Pb), % 0 to 0.1
0
Magnesium (Mg), % 0
92.1 to 93.9
Nickel (Ni), % 1.6 to 2.2
0 to 0.010
Silicon (Si), % 0.4 to 0.8
0
Zinc (Zn), % 0 to 0.5
5.5 to 6.5
Zirconium (Zr), % 0
0.6 to 1.0
Residuals, % 0
0 to 0.3