|
Major capability parameter | |||
|
Material purity |
>99.995% | ||
|
Crystal structure |
M6 | ||
|
Unit cell constant |
a=5.154Å c=13.783 Å | ||
|
Melt point（℃） |
1650 | ||
|
Density |
7.45（g/cm3） | ||
|
Hardness |
5.5~6（mohs） | ||
|
Color |
Colorless | ||
|
Index of refraction |
no=2.176 ne=2.180 （633nm） | ||
|
Through scope |
0.4～5.0mm | ||
|
Resistance coefficient |
1015wm | ||
|
Dielectric constants |
es11/eo:39~43 es33/eo:42~43 et11/eo:51~54 et33/eo:43~46 | ||
|
Thermal expansion |
aa=1.61×10-6/k，ac=4.1×10-6/k | ||
|
Product | |||
|
Name |
Product |
Direction |
Size |
|
LTB |
Crystal great |
X、Y、Z±1º |
Ø2″×50mm Ø3″×50mm |
|
LTW |
Double flip Ra<10Å |
X, y, z or y, rotating or not take place side |
10×10×0.5mm Ø2″×0.5mm Ø3″×0.5mm Ø3″×1.0mm |
|
Pack |
100 clean bag，1000 exactly clean bag | ||