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Zamak 7 vs. Commercially Pure Silver

Zamak 7 belongs to the zinc alloys classification, while commercially pure silver belongs to the otherwise unclassified metals. There are 21 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is Zamak 7 and the bottom bar is commercially pure silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 86
71
Elongation at Break, % 13
1.1 to 29
Poisson's Ratio 0.25
0.37
Shear Modulus, GPa 33
26
Shear Strength, MPa 210
120 to 190
Tensile Strength: Ultimate (UTS), MPa 280
190 to 340

Thermal Properties

Latent Heat of Fusion, J/g 120
110
Melting Completion (Liquidus), °C 390
960
Melting Onset (Solidus), °C 380
960
Specific Heat Capacity, J/kg-K 410
240
Thermal Conductivity, W/m-K 110
420
Thermal Expansion, µm/m-K 27
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
100
Electrical Conductivity: Equal Weight (Specific), % IACS 38
87

Otherwise Unclassified Properties

Density, g/cm3 6.4
10

Common Calculations

Stiffness to Weight: Axial, points 7.5
3.8
Stiffness to Weight: Bending, points 23
13
Strength to Weight: Axial, points 12
4.9 to 8.9
Strength to Weight: Bending, points 15
6.9 to 10
Thermal Diffusivity, mm2/s 43
170
Thermal Shock Resistance, points 8.6
9.5 to 17

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
0
Cadmium (Cd), % 0 to 0.0020
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.075
0
Lead (Pb), % 0 to 0.0030
0
Magnesium (Mg), % 0.0050 to 0.020
0
Nickel (Ni), % 0.0050 to 0.020
0
Silver (Ag), % 0
99.9 to 100
Tin (Sn), % 0 to 0.0010
0
Zinc (Zn), % 95.3 to 96.5
0
Residuals, % 0
0 to 0.1