項(xiàng)目

**高純剛玉磚

燒結(jié)白剛玉磚

莫來(lái)石剛玉磚

AL₂O₃%

≥97

≥90

≥80

SiO₂%

≤0.2

≤8

≤18

Fe₂O₃%

≤0.2

≤0.2

≤0.3

體積密度g/cm³

≥3.2

≥3

≥2.8

顯氣孔率%

≤19

≤18

≤18

常溫耐壓強(qiáng)度MPa

≥100

≥100

≥100

荷重軟化開(kāi)始溫度℃

≥1700

≥1700

≥1700