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FFKM vs. PES

FFKM belongs to the thermoset elastomers (rubber) classification, while PES belongs to the thermoplastics. There are 6 material properties with values for both materials. Properties with values for just one material (25, in this case) are not shown.

For each property being compared, the top bar is FFKM and the bottom bar is PES.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 2.0
1.4
Elongation at Break, % 170
65
Maximum Temperature: Mechanical, °C 280
200
Strength to Weight: Axial, points 2.3
18
Strength to Weight: Bending, points 7.2
32
Tensile Strength: Ultimate (UTS), MPa 16
87