Table 1.

Mechanical properties for PEEK, Ti, and PEEK/n-HA/CF composites showing the mean ± standard deviation hardness, elastic modulus, and UTS for each group

Samples	UTS (MPa)	Elastic modulus (GPa)	Hardness (MPa)
PEEK/n-HA/CF (mean ± SD)	135.6±8.2	16.5±0.7	143.0±6.3
PEEK (mean ± SD)	89.2±10.4	3.5±0.3	91.1±3.1
Ti (mean ± SD)	963.8±23.5	110.5±2.0	3,108.6±298.4
Cortical bone	50–150	6–23	No data

Abbreviations: PEEK, polyetheretherketone; PEEK/n-HA/CF, carbon fiber-reinforced polyetheretherketone–nanohydroxyapatite; SD, standard deviation; UTS, ultimate tensile strength.