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C87600 Bronze vs. ZK61A Magnesium

C87600 bronze belongs to the copper alloys classification, while ZK61A magnesium belongs to the magnesium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, 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 C87600 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, % 18
5.8 to 7.1
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 42
18
Tensile Strength: Ultimate (UTS), MPa 470
290 to 310
Tensile Strength: Yield (Proof), MPa 230
180 to 200

Thermal Properties

Latent Heat of Fusion, J/g 280
330
Maximum Temperature: Mechanical, °C 190
120
Melting Completion (Liquidus), °C 970
640
Melting Onset (Solidus), °C 860
530
Specific Heat Capacity, J/kg-K 410
960
Thermal Conductivity, W/m-K 28
120
Thermal Expansion, µm/m-K 17
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.0
29
Electrical Conductivity: Equal Weight (Specific), % IACS 6.4
130

Otherwise Unclassified Properties

Base Metal Price, % relative 29
13
Density, g/cm3 8.5
1.9
Embodied Carbon, kg CO2/kg material 2.7
23
Embodied Energy, MJ/kg 43
160
Embodied Water, L/kg 300
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71
15 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 240
370 to 420
Stiffness to Weight: Axial, points 7.4
13
Stiffness to Weight: Bending, points 19
62
Strength to Weight: Axial, points 16
42 to 45
Strength to Weight: Bending, points 16
50 to 53
Thermal Diffusivity, mm2/s 8.1
65
Thermal Shock Resistance, points 17
17 to 18

Alloy Composition

Copper (Cu), % 88 to 92.5
0 to 0.1
Lead (Pb), % 0 to 0.5
0
Magnesium (Mg), % 0
92.1 to 93.9
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 3.5 to 5.5
0
Zinc (Zn), % 4.0 to 7.0
5.5 to 6.5
Zirconium (Zr), % 0
0.6 to 1.0
Residuals, % 0
0 to 0.3