Table 3: Typical properties of dense hydroxyapatite.

PropertiesAmount

Theoretical density 3.156 g/cm3
Hardness 500–800 Vickers, 2000–3500 Knoop
Tensile strength 40–100 MPa
Bend strength 20–80 MPa
Compressive strength 100–900 MPa
Fracture toughness1 
Young’s modulus 70–120 GPa