Dia. (mm) Grade* Materials Available


Spinel Fused Silica BK-7 STiM-28 Ruby Sap_
phire
TaF-3 LaSF
-N9
S-LaH79 Cubic
Zirconia


nd=
1.1727
nd=
1.458
nd=
1.5167
nd=1.6889 nd=
1.760
nd=
1.768
nd=
1.8042
nd=
1.85026
nd=
2.00373
nd=2.177

0.15

C

n/a

n/a

n/a

n/a

n/a

n/a

n/a

n/a

0.25

C

n/a

n/a

n/a

n/a

n/a

n/a

0.30

C

n/a

n/a

n/a

n/a

n/a

n/a

0.40

C

n/a

n/a

n/a

n/a

n/a

n/a

0.50

C

0.60

C

0.80

C

1.00

C

1.50

C

2.00

C

3.00

C

4.00

C

5.00

C

6.00

C

7.00

C

8.00

C

9.00

C

10.00

C

Grade Ball Diameter Variation Deviation from Spherical Form(Sphericity)
+/- micro-inch +/- micron micro-inch micron

A

30

0.762

<19.685

<0.5

B

50

1.27

<19.685

<0.5

C

100

2.54

<19.685

<0.5

D

200

5.08

25

0.635

E

500

12.7

50

1.27

F

1000

25.4

100

2.54