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ASTM B631 Class A vs. Z41121 Zinc

ASTM B631 class A belongs to the otherwise unclassified metals classification, while Z41121 zinc belongs to the zinc alloys. There are 16 material properties with values for both materials. Properties with values for just one material (13, 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 ASTM B631 class A and the bottom bar is Z41121 zinc.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
87
Poisson's Ratio 0.3
0.25
Shear Modulus, GPa 85 to 86
35

Thermal Properties

Latent Heat of Fusion, J/g 160
110
Melting Completion (Liquidus), °C 2680 to 2690
410
Specific Heat Capacity, J/kg-K 160
390
Thermal Conductivity, W/m-K 420
110
Thermal Expansion, µm/m-K 11
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40 to 47
27
Electrical Conductivity: Equal Weight (Specific), % IACS 25 to 29
37

Otherwise Unclassified Properties

Density, g/cm3 15
6.6
Embodied Carbon, kg CO2/kg material 43
2.8
Embodied Energy, MJ/kg 670
54

Common Calculations

Stiffness to Weight: Axial, points 8.5
7.4
Stiffness to Weight: Bending, points 14
23
Thermal Diffusivity, mm2/s 180
44