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Zamak 7 vs. ASTM B522 Class I

Zamak 7 belongs to the zinc alloys classification, while ASTM B522 class I belongs to the otherwise unclassified metals. There are 23 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is Zamak 7 and the bottom bar is ASTM B522 class I.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 86
96
Elongation at Break, % 13
1.1 to 29
Knoop Hardness 99
88 to 150
Poisson's Ratio 0.25
0.41
Shear Modulus, GPa 33
34
Shear Strength, MPa 210
180 to 280
Tensile Strength: Ultimate (UTS), MPa 280
280 to 490
Tensile Strength: Yield (Proof), MPa 250
120 to 210

Thermal Properties

Latent Heat of Fusion, J/g 120
77
Melting Completion (Liquidus), °C 390
1030
Melting Onset (Solidus), °C 380
1030
Specific Heat Capacity, J/kg-K 410
160
Thermal Expansion, µm/m-K 27
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
11
Electrical Conductivity: Equal Weight (Specific), % IACS 38
5.8

Otherwise Unclassified Properties

Density, g/cm3 6.4
17

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
4.5 to 64
Resilience: Unit (Modulus of Resilience), kJ/m3 370
75 to 230
Stiffness to Weight: Axial, points 7.5
3.1
Stiffness to Weight: Bending, points 23
8.9
Strength to Weight: Axial, points 12
4.4 to 7.8
Strength to Weight: Bending, points 15
5.5 to 8.0
Thermal Shock Resistance, points 8.6
13 to 24

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
0
Cadmium (Cd), % 0 to 0.0020
0
Copper (Cu), % 0 to 0.25
0
Gold (Au), % 0
68 to 70
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
Platinum (Pt), % 0
5.0 to 7.0
Silver (Ag), % 0
23.5 to 26.5
Tin (Sn), % 0 to 0.0010
0
Zinc (Zn), % 95.3 to 96.5
0
Residuals, % 0
0 to 0.35