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ACI-ASTM CB7Cu-2 Steel vs. Zamak 5

ACI-ASTM CB7Cu-2 steel belongs to the iron alloys classification, while Zamak 5 belongs to the zinc alloys. There are 29 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 ACI-ASTM CB7Cu-2 steel and the bottom bar is Zamak 5.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300 to 420
92
Elastic (Young's, Tensile) Modulus, GPa 190
87
Elongation at Break, % 5.7 to 11
6.3
Fatigue Strength, MPa 420 to 590
56
Poisson's Ratio 0.28
0.25
Shear Modulus, GPa 75
33
Tensile Strength: Ultimate (UTS), MPa 960 to 1350
330
Tensile Strength: Yield (Proof), MPa 760 to 1180
240

Thermal Properties

Latent Heat of Fusion, J/g 280
120
Melting Completion (Liquidus), °C 1430
390
Melting Onset (Solidus), °C 1380
380
Specific Heat Capacity, J/kg-K 480
410
Thermal Conductivity, W/m-K 17
110
Thermal Expansion, µm/m-K 11
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
26
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
37

Otherwise Unclassified Properties

Base Metal Price, % relative 13
12
Density, g/cm3 7.8
6.4
Embodied Carbon, kg CO2/kg material 2.6
3.0
Embodied Energy, MJ/kg 38
57
Embodied Water, L/kg 130
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 120
19
Resilience: Unit (Modulus of Resilience), kJ/m3 1510 to 3600
330
Stiffness to Weight: Axial, points 14
7.5
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 34 to 48
14
Strength to Weight: Bending, points 28 to 35
16
Thermal Diffusivity, mm2/s 4.6
42
Thermal Shock Resistance, points 32 to 45
9.9

Alloy Composition

Aluminum (Al), % 0
3.5 to 4.3
Cadmium (Cd), % 0
0 to 0.0050
Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 14 to 15.5
0
Copper (Cu), % 2.5 to 3.2
0.7 to 1.3
Iron (Fe), % 73.6 to 79
0 to 0.1
Lead (Pb), % 0
0 to 0.0050
Magnesium (Mg), % 0
0.025 to 0.080
Manganese (Mn), % 0 to 0.7
0
Nickel (Ni), % 4.5 to 5.5
0 to 0.020
Niobium (Nb), % 0 to 0.35
0
Nitrogen (N), % 0 to 0.050
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
0 to 0.030
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.0030
Zinc (Zn), % 0
94.3 to 95.7