Oxides

Glass II

Glass Ш

Series

а

b

c

а

b

c

SiO2

37.0

46.0

55.0

37.0

46.0

55.0

Al2O3

14.4

12.3

10.3

12.7

10.9

9.1

MgO

9.9

8.5

7.1

7.3

6.2

5.2

CaO

27.7

23.8

19.8

36.2

31.1

25.9

TiO2

7.2

6.1

5.1

2.1

1.8

1.5

Other oxides

3.8

3.3

2.7

4.7

4.0

3.3

K

1

1.45

2.12

0.84

1.25

1.79