Standard Sizes of Mica
 

ASTM Grade size

Area of minimum Rectangle

Minimum dimension of one side

Sq. In.

Equivalent Sq Cm

Inch

Cm
OOEE Special

100

650

4

10.0
OEE Special

80

520

4

10.0
EE Special

60

390

4

10.0
E Special

48

310

4

10.0
A-1 (Special)

36

235

3½

8.8
No. 1

24

155

3

8.8
No. 2

15

97

2

5.0
No. 3

10

65

2

5.0
No. 4

6

40

1½

3.8
No. 5

3

20

1

2.5
No. 5½

2½

15

7/8

2.2
No. 6

1

6.5

¾

1.9

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