Material: Silicon Dioxide (SiO2)

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Property↑↓	Value↑↓	Conditions↑↓	Reference↑↓
Hardness,Vickers(VH)	1120 .. 1230 kg/mm/mm	500g,Ceramic,1010 face,10um diagonal	CRC Materials Science and Engineering Handbook, p.474
Hardness,Vickers(VH)	1040 .. 1130 kg/mm/mm	500g,Ceramic,1011 face,10um diagonal	CRC Materials Science and Engineering Handbook, p.474
Hardness,Vickers(VH)	1300 kg/mm/mm	500g,Ceramic,polished 1010 face,10um diagonal	CRC Materials Science and Engineering Handbook, p.475