Z21210 Zinc vs. ASTM B631 Class A

Z21210 zinc belongs to the zinc alloys classification, while ASTM B631 class A belongs to the otherwise unclassified metals. There are 9 material properties with values for both materials. Properties with values for just one material (12, 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 Z21210 zinc and the bottom bar is ASTM B631 class A.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm³		7.1
Density, g/cm³		15

Electrical Conductivity: Equal Volume, % IACS		28
Electrical Conductivity: Equal Volume, % IACS		40 to 47

Electrical Conductivity: Equal Weight (Specific), % IACS		35
Electrical Conductivity: Equal Weight (Specific), % IACS		25 to 29

Melting Completion (Liquidus), °C		420
Melting Completion (Liquidus), °C		2680 to 2690

Rockwell B Hardness		45 to 58
Rockwell B Hardness		63 to 98

Specific Heat Capacity, J/kg-K		400
Specific Heat Capacity, J/kg-K		160

Thermal Conductivity, W/m-K		110
Thermal Conductivity, W/m-K		420

Thermal Diffusivity, mm²/s		38
Thermal Diffusivity, mm²/s		180

Thermal Expansion, µm/m-K		32
Thermal Expansion, µm/m-K		11

Z21210 Zinc vs. ASTM B631 Class A

Material Properties

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