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Zamak 7 vs. C99700 Brass

Zamak 7 belongs to the zinc alloys classification, while C99700 brass belongs to the copper alloys. They have a modest 24% of their average alloy composition in common, which, by itself, doesn't mean much. There are 26 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is Zamak 7 and the bottom bar is C99700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 86
120
Elongation at Break, % 13
25
Poisson's Ratio 0.25
0.32
Shear Modulus, GPa 33
46
Tensile Strength: Ultimate (UTS), MPa 280
380
Tensile Strength: Yield (Proof), MPa 250
170

Thermal Properties

Latent Heat of Fusion, J/g 120
200
Maximum Temperature: Mechanical, °C 95
160
Melting Completion (Liquidus), °C 390
900
Melting Onset (Solidus), °C 380
880
Specific Heat Capacity, J/kg-K 410
410
Thermal Expansion, µm/m-K 27
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 38
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 11
25
Density, g/cm3 6.4
8.1
Embodied Carbon, kg CO2/kg material 3.0
3.3
Embodied Energy, MJ/kg 57
53
Embodied Water, L/kg 380
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
78
Resilience: Unit (Modulus of Resilience), kJ/m3 370
120
Stiffness to Weight: Axial, points 7.5
8.3
Stiffness to Weight: Bending, points 23
20
Strength to Weight: Axial, points 12
13
Strength to Weight: Bending, points 15
14
Thermal Shock Resistance, points 8.6
11

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
0.5 to 3.0
Cadmium (Cd), % 0 to 0.0020
0
Copper (Cu), % 0 to 0.25
54 to 65.5
Iron (Fe), % 0 to 0.075
0 to 1.0
Lead (Pb), % 0 to 0.0030
0 to 2.0
Magnesium (Mg), % 0.0050 to 0.020
0
Manganese (Mn), % 0
11 to 15
Nickel (Ni), % 0.0050 to 0.020
4.0 to 6.0
Tin (Sn), % 0 to 0.0010
0 to 1.0
Zinc (Zn), % 95.3 to 96.5
19 to 25
Residuals, % 0
0 to 0.3