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C61900 Bronze vs. ZK61A Magnesium

C61900 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 C61900 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, % 21 to 32
5.8 to 7.1
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 43
18
Shear Strength, MPa 370 to 410
170 to 180
Tensile Strength: Ultimate (UTS), MPa 570 to 650
290 to 310
Tensile Strength: Yield (Proof), MPa 230 to 310
180 to 200

Thermal Properties

Latent Heat of Fusion, J/g 230
330
Maximum Temperature: Mechanical, °C 220
120
Melting Completion (Liquidus), °C 1050
640
Melting Onset (Solidus), °C 1040
530
Specific Heat Capacity, J/kg-K 440
960
Thermal Conductivity, W/m-K 79
120
Thermal Expansion, µm/m-K 18
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
29
Electrical Conductivity: Equal Weight (Specific), % IACS 11
130

Otherwise Unclassified Properties

Base Metal Price, % relative 28
13
Density, g/cm3 8.3
1.9
Embodied Carbon, kg CO2/kg material 3.1
23
Embodied Energy, MJ/kg 51
160
Embodied Water, L/kg 380
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 150
15 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 230 to 430
370 to 420
Stiffness to Weight: Axial, points 7.6
13
Stiffness to Weight: Bending, points 19
62
Strength to Weight: Axial, points 19 to 22
42 to 45
Strength to Weight: Bending, points 18 to 20
50 to 53
Thermal Diffusivity, mm2/s 22
65
Thermal Shock Resistance, points 20 to 23
17 to 18

Alloy Composition

Aluminum (Al), % 8.5 to 10
0
Copper (Cu), % 83.6 to 88.5
0 to 0.1
Iron (Fe), % 3.0 to 4.5
0
Lead (Pb), % 0 to 0.020
0
Magnesium (Mg), % 0
92.1 to 93.9
Nickel (Ni), % 0
0 to 0.010
Tin (Sn), % 0 to 0.6
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