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CC751S Brass vs. Zamak 7

CC751S brass belongs to the copper alloys classification, while Zamak 7 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 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 CC751S brass and the bottom bar is Zamak 7.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130
80
Elastic (Young's, Tensile) Modulus, GPa 110
86
Elongation at Break, % 5.6
13
Poisson's Ratio 0.31
0.25
Shear Modulus, GPa 40
33
Tensile Strength: Ultimate (UTS), MPa 450
280
Tensile Strength: Yield (Proof), MPa 320
250

Thermal Properties

Latent Heat of Fusion, J/g 190
120
Maximum Temperature: Mechanical, °C 130
95
Melting Completion (Liquidus), °C 850
390
Melting Onset (Solidus), °C 810
380
Specific Heat Capacity, J/kg-K 390
410
Thermal Conductivity, W/m-K 110
110
Thermal Expansion, µm/m-K 20
27

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 24
11
Density, g/cm3 8.1
6.4
Embodied Carbon, kg CO2/kg material 2.8
3.0
Embodied Energy, MJ/kg 46
57
Embodied Water, L/kg 330
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23
36
Resilience: Unit (Modulus of Resilience), kJ/m3 480
370
Stiffness to Weight: Axial, points 7.2
7.5
Stiffness to Weight: Bending, points 19
23
Strength to Weight: Axial, points 15
12
Strength to Weight: Bending, points 16
15
Thermal Diffusivity, mm2/s 35
43
Thermal Shock Resistance, points 15
8.6

Alloy Composition

Aluminum (Al), % 0 to 0.1
3.5 to 4.3
Antimony (Sb), % 0 to 0.5
0
Cadmium (Cd), % 0
0 to 0.0020
Copper (Cu), % 62.7 to 66
0 to 0.25
Iron (Fe), % 0.25 to 0.5
0 to 0.075
Lead (Pb), % 0.8 to 2.2
0 to 0.0030
Magnesium (Mg), % 0
0.0050 to 0.020
Manganese (Mn), % 0 to 0.15
0
Nickel (Ni), % 0 to 0.8
0.0050 to 0.020
Silicon (Si), % 0.65 to 1.1
0
Tin (Sn), % 0 to 0.8
0 to 0.0010
Zinc (Zn), % 27.9 to 35.6
95.3 to 96.5