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PEEK vs. Grade 2 Babbitt Metal

PEEK and grade 2 Babbitt Metal belong to fundamentally different material chemistries. PEEK is a polymeric material, while grade 2 Babbitt Metal is a metal. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 8 material properties with values for both materials. Properties with values for just one material (32, 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 PEEK and the bottom bar is grade 2 Babbitt Metal.

Metric UnitsUS Customary Units

Material Properties

Compressive (Crushing) Strength, MPa 120 to 300
100
Density, g/cm3 1.3 to 1.5
7.3
Elastic (Young's, Tensile) Modulus, GPa 4.0 to 24
53
Melting Onset (Solidus), °C 340
240
Specific Heat Capacity, J/kg-K 1390 to 1700
230
Stiffness to Weight: Axial, points 1.5 to 10
4.0
Stiffness to Weight: Bending, points 36 to 73
17
Thermal Expansion, µm/m-K 15 to 52
21