material Quality: Aluminum oxide ceramic (99 Al2O3)
Volume density: ≥ 3.85 g/cm3
Bending strength: ≥ 340 Mpa
Rockwell hardness: ≥ 88 HRA
Vickers hardness: ≥ 1600 kg/mm2
Elastic modulus: ≥ 330 GPa
Fracture toughness: ≥ 2.5 Mpa.m1/2
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