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Z21721 Zinc vs. C92300 Bronze

Z21721 zinc belongs to the zinc alloys classification, while C92300 bronze belongs to the copper alloys.

For each property being compared, the top bar is Z21721 zinc and the bottom bar is C92300 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 87
110
Elongation at Break, % 40
19
Poisson's Ratio 0.25
0.34
Shear Modulus, GPa 35
40
Tensile Strength: Ultimate (UTS), MPa 150
300
Tensile Strength: Yield (Proof), MPa 120
140

Thermal Properties

Latent Heat of Fusion, J/g 110
190
Maximum Temperature: Mechanical, °C 90
170
Melting Completion (Liquidus), °C 410
1000
Melting Onset (Solidus), °C 390
850
Specific Heat Capacity, J/kg-K 390
370
Thermal Conductivity, W/m-K 110
75
Thermal Expansion, µm/m-K 26
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
12
Electrical Conductivity: Equal Weight (Specific), % IACS 37
12

Otherwise Unclassified Properties

Base Metal Price, % relative 11
33
Density, g/cm3 6.6
8.7
Embodied Carbon, kg CO2/kg material 2.8
3.4
Embodied Energy, MJ/kg 53
56
Embodied Water, L/kg 340
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 57
47
Resilience: Unit (Modulus of Resilience), kJ/m3 88
86
Stiffness to Weight: Axial, points 7.3
6.9
Stiffness to Weight: Bending, points 22
18
Strength to Weight: Axial, points 6.4
9.5
Strength to Weight: Bending, points 9.6
11
Thermal Diffusivity, mm2/s 44
23
Thermal Shock Resistance, points 4.8
11

Alloy Composition

Aluminum (Al), % 0 to 0.0020
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Cadmium (Cd), % 0 to 0.070
0
Copper (Cu), % 0 to 0.0050
85 to 89
Iron (Fe), % 0 to 0.010
0 to 0.25
Lead (Pb), % 0 to 1.0
0.3 to 1.0
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0
0 to 0.0050
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0
7.5 to 9.0
Titanium (Ti), % 0 to 0.020
0
Zinc (Zn), % 98.9 to 100
2.5 to 5.0
Residuals, % 0
0 to 0.7