Specification

          M50

        M60

        M70

         M80

SiO2(%)

43-47

33-37

23-27

12-16

Fe2O3(%)

≤0.6

≤1.3

≤1.5

≤1.7

Al2O3(%)

48-52

58-62

68-72

78-82

TiO2(%)

≤0.83

≤2.04

≤2.85

≤3.15

CaO(%)

≤0.21

≤0.22

≤0.28

≤0.43

MgO(%)

≤0.18

≤0.18

≤0.18

≤0.26

K2O(%)

≤0.12

≤0.11

≤0.1

≤0.1

Na2O(%)

≤0.05

≤0.03

≤0.03

≤0.04

Apparent porosity (%)

---

4

3

3

Bulk density(g/cm3)

≥2.4

≥2.6

≥2.8

≥2.9