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NBR Rubber vs. Zamak 3

NBR rubber and Zamak 3 belong to fundamentally different material chemistries. NBR rubber is a polymeric material, while Zamak 3 is a metal. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 9 material properties with values for both materials. Properties with values for just one material (28, 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 NBR rubber and the bottom bar is Zamak 3.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 1.3
6.4
Elongation at Break, % 380
11
Maximum Temperature: Mechanical, °C 110
95
Specific Heat Capacity, J/kg-K 1350
410
Strength to Weight: Axial, points 3.9
12
Strength to Weight: Bending, points 12
15
Tensile Strength: Ultimate (UTS), MPa 18
280
Thermal Conductivity, W/m-K 0.25
110
Thermal Diffusivity, mm2/s 0.15
43