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Zamak 7 vs. CR025A Copper

Zamak 7 belongs to the zinc alloys classification, while CR025A copper belongs to the copper alloys. There are 28 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 Zamak 7 and the bottom bar is CR025A copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 86
120
Elongation at Break, % 13
15
Poisson's Ratio 0.25
0.34
Shear Modulus, GPa 33
43
Tensile Strength: Ultimate (UTS), MPa 280
230
Tensile Strength: Yield (Proof), MPa 250
140

Thermal Properties

Latent Heat of Fusion, J/g 120
210
Maximum Temperature: Mechanical, °C 95
200
Melting Completion (Liquidus), °C 390
1090
Melting Onset (Solidus), °C 380
1040
Specific Heat Capacity, J/kg-K 410
390
Thermal Conductivity, W/m-K 110
370
Thermal Expansion, µm/m-K 27
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
99
Electrical Conductivity: Equal Weight (Specific), % IACS 38
99

Otherwise Unclassified Properties

Base Metal Price, % relative 11
31
Density, g/cm3 6.4
9.0
Embodied Carbon, kg CO2/kg material 3.0
2.6
Embodied Energy, MJ/kg 57
41
Embodied Water, L/kg 380
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
31
Resilience: Unit (Modulus of Resilience), kJ/m3 370
83
Stiffness to Weight: Axial, points 7.5
7.2
Stiffness to Weight: Bending, points 23
18
Strength to Weight: Axial, points 12
7.1
Strength to Weight: Bending, points 15
9.3
Thermal Diffusivity, mm2/s 43
110
Thermal Shock Resistance, points 8.6
8.1

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
0
Bismuth (Bi), % 0
0 to 0.00050
Cadmium (Cd), % 0 to 0.0020
0
Copper (Cu), % 0 to 0.25
99.9 to 99.96
Iron (Fe), % 0 to 0.075
0
Lead (Pb), % 0 to 0.0030
0 to 0.0050
Magnesium (Mg), % 0.0050 to 0.020
0
Nickel (Ni), % 0.0050 to 0.020
0
Phosphorus (P), % 0
0.040 to 0.060
Silver (Ag), % 0
0 to 0.015
Tin (Sn), % 0 to 0.0010
0
Zinc (Zn), % 95.3 to 96.5
0