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C61900 Bronze vs. ZK40A Magnesium

C61900 bronze belongs to the copper alloys classification, while ZK40A magnesium belongs to the magnesium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (1, 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 C61900 bronze and the bottom bar is ZK40A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
45
Elongation at Break, % 21 to 32
4.2
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 43
17
Shear Strength, MPa 370 to 410
160
Tensile Strength: Ultimate (UTS), MPa 570 to 650
280
Tensile Strength: Yield (Proof), MPa 230 to 310
260

Thermal Properties

Latent Heat of Fusion, J/g 230
340
Maximum Temperature: Mechanical, °C 220
120
Melting Completion (Liquidus), °C 1050
600
Melting Onset (Solidus), °C 1040
540
Specific Heat Capacity, J/kg-K 440
970
Thermal Conductivity, W/m-K 79
110
Thermal Expansion, µm/m-K 18
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
27
Electrical Conductivity: Equal Weight (Specific), % IACS 11
130

Otherwise Unclassified Properties

Base Metal Price, % relative 28
13
Density, g/cm3 8.3
1.8
Embodied Carbon, kg CO2/kg material 3.1
24
Embodied Energy, MJ/kg 51
160
Embodied Water, L/kg 380
950

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 150
12
Resilience: Unit (Modulus of Resilience), kJ/m3 230 to 430
740
Stiffness to Weight: Axial, points 7.6
14
Stiffness to Weight: Bending, points 19
65
Strength to Weight: Axial, points 19 to 22
43
Strength to Weight: Bending, points 18 to 20
53
Thermal Diffusivity, mm2/s 22
62
Thermal Shock Resistance, points 20 to 23
17

Alloy Composition

Aluminum (Al), % 8.5 to 10
0
Copper (Cu), % 83.6 to 88.5
0
Iron (Fe), % 3.0 to 4.5
0
Lead (Pb), % 0 to 0.020
0
Magnesium (Mg), % 0
94.2 to 96.1
Tin (Sn), % 0 to 0.6
0
Zinc (Zn), % 0 to 0.8
3.5 to 4.5
Zirconium (Zr), % 0
0.45 to 1.0
Residuals, % 0
0 to 0.3