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CC751S Brass vs. Z21721 Zinc

CC751S brass belongs to the copper alloys classification, while Z21721 zinc belongs to the zinc alloys. They have a modest 32% 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 CC751S brass and the bottom bar is Z21721 zinc.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
87
Elongation at Break, % 5.6
40
Poisson's Ratio 0.31
0.25
Shear Modulus, GPa 40
35
Tensile Strength: Ultimate (UTS), MPa 450
150
Tensile Strength: Yield (Proof), MPa 320
120

Thermal Properties

Latent Heat of Fusion, J/g 190
110
Maximum Temperature: Mechanical, °C 130
90
Melting Completion (Liquidus), °C 850
410
Melting Onset (Solidus), °C 810
390
Specific Heat Capacity, J/kg-K 390
390
Thermal Conductivity, W/m-K 110
110
Thermal Expansion, µm/m-K 20
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
27
Electrical Conductivity: Equal Weight (Specific), % IACS 28
37

Otherwise Unclassified Properties

Base Metal Price, % relative 24
11
Density, g/cm3 8.1
6.6
Embodied Carbon, kg CO2/kg material 2.8
2.8
Embodied Energy, MJ/kg 46
53
Embodied Water, L/kg 330
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23
57
Resilience: Unit (Modulus of Resilience), kJ/m3 480
88
Stiffness to Weight: Axial, points 7.2
7.3
Stiffness to Weight: Bending, points 19
22
Strength to Weight: Axial, points 15
6.4
Strength to Weight: Bending, points 16
9.6
Thermal Diffusivity, mm2/s 35
44
Thermal Shock Resistance, points 15
4.8

Alloy Composition

Aluminum (Al), % 0 to 0.1
0 to 0.0020
Antimony (Sb), % 0 to 0.5
0
Cadmium (Cd), % 0
0 to 0.070
Copper (Cu), % 62.7 to 66
0 to 0.0050
Iron (Fe), % 0.25 to 0.5
0 to 0.010
Lead (Pb), % 0.8 to 2.2
0 to 1.0
Manganese (Mn), % 0 to 0.15
0
Nickel (Ni), % 0 to 0.8
0
Silicon (Si), % 0.65 to 1.1
0
Tin (Sn), % 0 to 0.8
0
Titanium (Ti), % 0
0 to 0.020
Zinc (Zn), % 27.9 to 35.6
98.9 to 100