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Z21721 Zinc vs. C87600 Bronze

Z21721 zinc belongs to the zinc alloys classification, while C87600 bronze belongs to the copper alloys.

For each property being compared, the top bar is Z21721 zinc and the bottom bar is C87600 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 87
110
Elongation at Break, % 40
18
Poisson's Ratio 0.25
0.33
Shear Modulus, GPa 35
42
Tensile Strength: Ultimate (UTS), MPa 150
470
Tensile Strength: Yield (Proof), MPa 120
230

Thermal Properties

Latent Heat of Fusion, J/g 110
280
Maximum Temperature: Mechanical, °C 90
190
Melting Completion (Liquidus), °C 410
970
Melting Onset (Solidus), °C 390
860
Specific Heat Capacity, J/kg-K 390
410
Thermal Conductivity, W/m-K 110
28
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
6.0
Electrical Conductivity: Equal Weight (Specific), % IACS 37
6.4

Otherwise Unclassified Properties

Base Metal Price, % relative 11
29
Density, g/cm3 6.6
8.5
Embodied Carbon, kg CO2/kg material 2.8
2.7
Embodied Energy, MJ/kg 53
43
Embodied Water, L/kg 340
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 57
71
Resilience: Unit (Modulus of Resilience), kJ/m3 88
240
Stiffness to Weight: Axial, points 7.3
7.4
Stiffness to Weight: Bending, points 22
19
Strength to Weight: Axial, points 6.4
16
Strength to Weight: Bending, points 9.6
16
Thermal Diffusivity, mm2/s 44
8.1
Thermal Shock Resistance, points 4.8
17

Alloy Composition

Aluminum (Al), % 0 to 0.0020
0
Cadmium (Cd), % 0 to 0.070
0
Copper (Cu), % 0 to 0.0050
88 to 92.5
Iron (Fe), % 0 to 0.010
0
Lead (Pb), % 0 to 1.0
0 to 0.5
Silicon (Si), % 0
3.5 to 5.5
Titanium (Ti), % 0 to 0.020
0
Zinc (Zn), % 98.9 to 100
4.0 to 7.0
Residuals, % 0
0 to 0.5