Al2O3,%

≥65

≥70

≥75

≥65

C,%

≥6

≥6

≥4

≥6

氣孔率/Apparent porosity,%

≤13

≤13

≤10

≤13

體密/Bulk density, g/cm3

≥2.75

≥2.85

≥3.00

≥2.75

耐壓/Cold crushing strength, MPa

≥70

≥80

≥90

≥70