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C85500 Brass vs. Zamak 7

C85500 brass belongs to the copper alloys classification, while Zamak 7 belongs to the zinc alloys. They have a modest 38% of their average alloy composition in common, which, by itself, doesn't mean much. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is C85500 brass and the bottom bar is Zamak 7.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 85
80
Elastic (Young's, Tensile) Modulus, GPa 100
86
Elongation at Break, % 40
13
Poisson's Ratio 0.31
0.25
Shear Modulus, GPa 40
33
Tensile Strength: Ultimate (UTS), MPa 410
280
Tensile Strength: Yield (Proof), MPa 160
250

Thermal Properties

Latent Heat of Fusion, J/g 170
120
Maximum Temperature: Mechanical, °C 120
95
Melting Completion (Liquidus), °C 900
390
Melting Onset (Solidus), °C 890
380
Specific Heat Capacity, J/kg-K 390
410
Thermal Conductivity, W/m-K 120
110
Thermal Expansion, µm/m-K 21
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
27
Electrical Conductivity: Equal Weight (Specific), % IACS 29
38

Otherwise Unclassified Properties

Base Metal Price, % relative 23
11
Density, g/cm3 8.0
6.4
Embodied Carbon, kg CO2/kg material 2.7
3.0
Embodied Energy, MJ/kg 46
57
Embodied Water, L/kg 320
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
36
Resilience: Unit (Modulus of Resilience), kJ/m3 120
370
Stiffness to Weight: Axial, points 7.3
7.5
Stiffness to Weight: Bending, points 20
23
Strength to Weight: Axial, points 14
12
Strength to Weight: Bending, points 15
15
Thermal Diffusivity, mm2/s 38
43
Thermal Shock Resistance, points 14
8.6

Alloy Composition

Aluminum (Al), % 0
3.5 to 4.3
Cadmium (Cd), % 0
0 to 0.0020
Copper (Cu), % 59 to 63
0 to 0.25
Iron (Fe), % 0 to 0.2
0 to 0.075
Lead (Pb), % 0 to 0.2
0 to 0.0030
Magnesium (Mg), % 0
0.0050 to 0.020
Manganese (Mn), % 0 to 0.2
0
Nickel (Ni), % 0 to 0.2
0.0050 to 0.020
Tin (Sn), % 0 to 0.2
0 to 0.0010
Zinc (Zn), % 35.1 to 41
95.3 to 96.5
Residuals, % 0 to 0.9
0