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Zamak 7 vs. C85900 Brass

Zamak 7 belongs to the zinc alloys classification, while C85900 brass belongs to the copper alloys. They have a modest 37% 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 (5, in this case) are not shown.

For each property being compared, the top bar is Zamak 7 and the bottom bar is C85900 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
85
Elastic (Young's, Tensile) Modulus, GPa 86
100
Elongation at Break, % 13
30
Poisson's Ratio 0.25
0.31
Shear Modulus, GPa 33
40
Tensile Strength: Ultimate (UTS), MPa 280
460
Tensile Strength: Yield (Proof), MPa 250
190

Thermal Properties

Latent Heat of Fusion, J/g 120
170
Maximum Temperature: Mechanical, °C 95
130
Melting Completion (Liquidus), °C 390
830
Melting Onset (Solidus), °C 380
790
Specific Heat Capacity, J/kg-K 410
390
Thermal Conductivity, W/m-K 110
89
Thermal Expansion, µm/m-K 27
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
25
Electrical Conductivity: Equal Weight (Specific), % IACS 38
28

Otherwise Unclassified Properties

Base Metal Price, % relative 11
24
Density, g/cm3 6.4
8.0
Embodied Carbon, kg CO2/kg material 3.0
2.9
Embodied Energy, MJ/kg 57
49
Embodied Water, L/kg 380
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
110
Resilience: Unit (Modulus of Resilience), kJ/m3 370
170
Stiffness to Weight: Axial, points 7.5
7.3
Stiffness to Weight: Bending, points 23
20
Strength to Weight: Axial, points 12
16
Strength to Weight: Bending, points 15
17
Thermal Diffusivity, mm2/s 43
29
Thermal Shock Resistance, points 8.6
16

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
0.1 to 0.6
Antimony (Sb), % 0
0 to 0.2
Boron (B), % 0
0 to 0.2
Cadmium (Cd), % 0 to 0.0020
0
Copper (Cu), % 0 to 0.25
58 to 62
Iron (Fe), % 0 to 0.075
0 to 0.5
Lead (Pb), % 0 to 0.0030
0 to 0.090
Magnesium (Mg), % 0.0050 to 0.020
0
Manganese (Mn), % 0
0 to 0.010
Nickel (Ni), % 0.0050 to 0.020
0 to 1.5
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0
0 to 0.25
Sulfur (S), % 0
0.1 to 0.65
Tin (Sn), % 0 to 0.0010
0 to 1.5
Zinc (Zn), % 95.3 to 96.5
31 to 41
Zirconium (Zr), % 0
0 to 0.2
Residuals, % 0
0 to 0.7