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Zamak 2 vs. FEP

Zamak 2 and FEP belong to fundamentally different material chemistries. Zamak 2 is a metal, while FEP is a polymeric material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 15 material properties with values for both materials. Properties with values for just one material (35, 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 2 and the bottom bar is FEP.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 87
0.43
Elongation at Break, % 6.0
300
Tensile Strength: Ultimate (UTS), MPa 360
20

Thermal Properties

Maximum Temperature: Mechanical, °C 95
200
Melting Onset (Solidus), °C 380
260
Specific Heat Capacity, J/kg-K 410
1170
Thermal Conductivity, W/m-K 110
0.22
Thermal Expansion, µm/m-K 28
95

Otherwise Unclassified Properties

Density, g/cm3 6.5
2.1

Common Calculations

Stiffness to Weight: Axial, points 7.5
0.11
Stiffness to Weight: Bending, points 23
12
Strength to Weight: Axial, points 15
2.6
Strength to Weight: Bending, points 17
7.6
Thermal Diffusivity, mm2/s 41
0.088
Thermal Shock Resistance, points 11
35