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Zamak 3 vs. ASTM B631 Class B

Zamak 3 belongs to the zinc alloys classification, while ASTM B631 class B belongs to the otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (19, 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 3 and the bottom bar is ASTM B631 class B.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 86
210
Poisson's Ratio 0.25
0.31
Rockwell B Hardness 50
53 to 85
Shear Modulus, GPa 33
78 to 79

Thermal Properties

Latent Heat of Fusion, J/g 120
150
Melting Completion (Liquidus), °C 390
2460 to 2480
Specific Heat Capacity, J/kg-K 410
170
Thermal Conductivity, W/m-K 110
450
Thermal Expansion, µm/m-K 27
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
50 to 53
Electrical Conductivity: Equal Weight (Specific), % IACS 38
32 to 34

Otherwise Unclassified Properties

Density, g/cm3 6.4
14
Embodied Carbon, kg CO2/kg material 3.0
49
Embodied Energy, MJ/kg 57
760

Common Calculations

Stiffness to Weight: Axial, points 7.5
8.1
Stiffness to Weight: Bending, points 23
14
Thermal Diffusivity, mm2/s 43
190