|
IR grade (KI)
|
Visible grade (KV)
|
UV grade (KU1)
|
透過帯域
|
0.17 to 3.4 μm
|
0.23 to 3.5μm
|
0.17 to 3.5μm
|
屈折率
|
nF (486nm) = 1.4631
nd (588nm) = 1.4585
nC (656nm) = 1.4564
|
nF (486nm) = 1.4632;
nd (588nm) = 1.4586
nC (656nm) = 1.4565
|
nF (486nm) = 1.4631
nd (588nm) = 1.4585
nC (656nm) = 1.4564
|
反射損失
|
For two surfaces at 400nm
- 7.1%; at 588nm - 6.8%
|
For two surfaces at 400nm
- 7.0%; at 588nm - 6.8%
|
For two surfaces at 200nm
- 9.1%; at 588nm - 6.8%
|
アッベ定数
|
67.8
|
67.6
|
67.8
|
気泡
|
None
|
None
|
None
|
蛍光性
|
Virtually fluorescence free
|
Upon excitation at 242 nm theMaterial
displays blue fluorescence
|
Virtually fluorescence free
|
不純物含量
|
Total metallic impurities:
Less than 0.3 ppm
|
Total metallic impurities:
25 - 30ppm
|
Total metallic impurities:
Approximately 5 ppm
|
OH含量
|
< 0.2 ppm
|
400 - 500 ppm
|
> 1000 ppm
|
濃度
|
2.201 g/cm3
|
2.203 g/cm3
|
2.201 g/cm3
|
熱膨張係数
|
0.55 x 10-6/oC
|
0.55 x 10-6 /oC
|
0.55 x 10-6/oC
|
軟化点
|
1600oC (2912oF)
|
1730oC (3146oF)
|
1600oC (2912oF)
|
アニール温度
|
1120oC (2048oF)
|
1120oC (2048oF)
|
1120oC (2048oF)
|
歪み点
|
1025oC (1877oF)
|
1075oC (1967oF)
|
1025oC (1877oF)
|
最高使用温度
|
950oC - continuous 1200oC - limited time
|
1150oC- continuous,
1300oC - limited time
|
950oC - continuous
1200oC - limited time
|
誘電率
|
3.91 at 1kHz
|
3.91 at 1kHz
|
3.91 at 1kHz
|
絶縁耐力
|
250-400 kV/cm at 20oC
|
250-400 kV/cm at 20oC
|
250-400 kV/cm at 20oC
|
ヤング率
|
73 GPa at 25oC
|
73 GPa at 25oC
|
73 GPa at 25oC
|
剛性率
|
36.9 GPa at 25oC
|
31 GPa at 25oC
|
31 GPa at 25oC
|
体積弾性率
|
36.9 GPa at 25oC
|
36.9 GPa at 25oC
|
36.9 GPa at 25oC
|
弾性限度
|
55MPa (7980 psi)
|
55MPa (7980 psi)
|
55MPa (7980 psi)
|
圧縮硬度
|
1.1 Gpa
|
1.1 GPa
|
1.1 GPa
|
引張強度
|
50 Mpa
|
50 MPa
|
50 MPa
|
ポアソン比
|
0.17 at 25oC
|
0.17 at 25oC
|
0.17 at 25oC
|
ヌープ硬度
|
500 kg/mm2
|
500 kg/mm2
|
500 kg/mm2
|
引張強度
|
50 Mpa
|
50 Mpa
|
50 Mpa
|
分子量
|
28.09
|
28.09
|
28.09
|
クラス/結晶構造
|
Amorphous glass
|
Amorphous glass
|
Amorphous glass
|
化学安定性
|
High resistance to water and
acids (except hydrofluoric)
|
High resistance to water and
acids (except hydrofluoric)
|
High resistance to water and
acids (except hydrofluoric
|