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C68100 Brass vs. Z21721 Zinc

C68100 brass belongs to the copper alloys classification, while Z21721 zinc belongs to the zinc alloys. They have a modest 40% of their average alloy composition in common, which, by itself, doesn't mean much. There are 28 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is C68100 brass and the bottom bar is Z21721 zinc.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
87
Elongation at Break, % 29
40
Poisson's Ratio 0.3
0.25
Shear Modulus, GPa 40
35
Tensile Strength: Ultimate (UTS), MPa 380
150
Tensile Strength: Yield (Proof), MPa 140
120

Thermal Properties

Latent Heat of Fusion, J/g 170
110
Maximum Temperature: Mechanical, °C 120
90
Melting Completion (Liquidus), °C 890
410
Melting Onset (Solidus), °C 870
390
Specific Heat Capacity, J/kg-K 390
390
Thermal Conductivity, W/m-K 98
110
Thermal Expansion, µm/m-K 21
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
27
Electrical Conductivity: Equal Weight (Specific), % IACS 27
37

Otherwise Unclassified Properties

Base Metal Price, % relative 23
11
Density, g/cm3 7.9
6.6
Embodied Carbon, kg CO2/kg material 2.8
2.8
Embodied Energy, MJ/kg 47
53
Embodied Water, L/kg 330
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86
57
Resilience: Unit (Modulus of Resilience), kJ/m3 94
88
Stiffness to Weight: Axial, points 7.3
7.3
Stiffness to Weight: Bending, points 20
22
Strength to Weight: Axial, points 13
6.4
Strength to Weight: Bending, points 15
9.6
Thermal Diffusivity, mm2/s 32
44
Thermal Shock Resistance, points 13
4.8

Alloy Composition

Aluminum (Al), % 0 to 0.010
0 to 0.0020
Cadmium (Cd), % 0
0 to 0.070
Copper (Cu), % 56 to 60
0 to 0.0050
Iron (Fe), % 0.25 to 1.3
0 to 0.010
Lead (Pb), % 0 to 0.050
0 to 1.0
Manganese (Mn), % 0.010 to 0.5
0
Silicon (Si), % 0.040 to 0.15
0
Tin (Sn), % 0.75 to 1.1
0
Titanium (Ti), % 0
0 to 0.020
Zinc (Zn), % 36.4 to 43
98.9 to 100
Residuals, % 0 to 0.5
0