MakeItFrom.com
Menu (ESC)

Zamak 7 vs. C87900 Brass

Zamak 7 belongs to the zinc alloys classification, while C87900 brass belongs to the copper alloys. They have a modest 33% 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 (7, in this case) are not shown.

For each property being compared, the top bar is Zamak 7 and the bottom bar is C87900 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 86
110
Elongation at Break, % 13
25
Poisson's Ratio 0.25
0.31
Shear Modulus, GPa 33
41
Tensile Strength: Ultimate (UTS), MPa 280
480
Tensile Strength: Yield (Proof), MPa 250
240

Thermal Properties

Latent Heat of Fusion, J/g 120
190
Maximum Temperature: Mechanical, °C 95
130
Melting Completion (Liquidus), °C 390
930
Melting Onset (Solidus), °C 380
900
Specific Heat Capacity, J/kg-K 410
390
Thermal Conductivity, W/m-K 110
120
Thermal Expansion, µm/m-K 27
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
15
Electrical Conductivity: Equal Weight (Specific), % IACS 38
17

Otherwise Unclassified Properties

Base Metal Price, % relative 11
24
Density, g/cm3 6.4
8.1
Embodied Carbon, kg CO2/kg material 3.0
2.7
Embodied Energy, MJ/kg 57
46
Embodied Water, L/kg 380
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
100
Resilience: Unit (Modulus of Resilience), kJ/m3 370
270
Stiffness to Weight: Axial, points 7.5
7.3
Stiffness to Weight: Bending, points 23
20
Strength to Weight: Axial, points 12
17
Strength to Weight: Bending, points 15
17
Thermal Diffusivity, mm2/s 43
37
Thermal Shock Resistance, points 8.6
16

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
0 to 0.15
Antimony (Sb), % 0
0 to 0.050
Arsenic (As), % 0
0 to 0.050
Cadmium (Cd), % 0 to 0.0020
0
Copper (Cu), % 0 to 0.25
63 to 69.2
Iron (Fe), % 0 to 0.075
0 to 0.4
Lead (Pb), % 0 to 0.0030
0 to 0.25
Magnesium (Mg), % 0.0050 to 0.020
0
Manganese (Mn), % 0
0 to 0.15
Nickel (Ni), % 0.0050 to 0.020
0 to 0.5
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0
0.8 to 1.2
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0 to 0.0010
0 to 0.25
Zinc (Zn), % 95.3 to 96.5
30 to 36