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C37100 Brass vs. Zamak 7

C37100 brass belongs to the copper alloys classification, while Zamak 7 belongs to the zinc alloys. They have a modest 39% 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 C37100 brass and the bottom bar is Zamak 7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
86
Elongation at Break, % 8.0 to 40
13
Poisson's Ratio 0.31
0.25
Shear Modulus, GPa 40
33
Shear Strength, MPa 260 to 300
210
Tensile Strength: Ultimate (UTS), MPa 370 to 520
280
Tensile Strength: Yield (Proof), MPa 150 to 390
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 380
410
Thermal Conductivity, W/m-K 120
110
Thermal Expansion, µm/m-K 21
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
27
Electrical Conductivity: Equal Weight (Specific), % IACS 30
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 45
57
Embodied Water, L/kg 320
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 38 to 120
36
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 750
370
Stiffness to Weight: Axial, points 7.2
7.5
Stiffness to Weight: Bending, points 20
23
Strength to Weight: Axial, points 13 to 18
12
Strength to Weight: Bending, points 14 to 18
15
Thermal Diffusivity, mm2/s 39
43
Thermal Shock Resistance, points 12 to 17
8.6

Alloy Composition

Aluminum (Al), % 0
3.5 to 4.3
Cadmium (Cd), % 0
0 to 0.0020
Copper (Cu), % 58 to 62
0 to 0.25
Iron (Fe), % 0 to 0.15
0 to 0.075
Lead (Pb), % 0.6 to 1.2
0 to 0.0030
Magnesium (Mg), % 0
0.0050 to 0.020
Nickel (Ni), % 0
0.0050 to 0.020
Tin (Sn), % 0
0 to 0.0010
Zinc (Zn), % 36.3 to 41.4
95.3 to 96.5
Residuals, % 0 to 0.4
0