|
Low hydroxyl
(Vacuum baked) ClearQuartz Tube |
|
≥45
|
≥88
|
≤5
|
GE214,
PH300/308ND, Ovisil452 |
Metal halide
lamps and other applications requiring hydroxyl free material |
|
|
|
≥45
|
≥88
|
≤2
|
GE214,
PH300/308ED, Ovisil451 |
Metal halide
lamps and other applications requiring hydroxyl free material |
|
|
|
≥45
|
≥88
|
≤1
|
GE214,
PH300/308SD, Ovisil451 |
Metal halide
lamps and other applications requiring hydroxyl free material |
|
|
|
≥68
|
≥90
|
≤1
|
GE214,
PH300/308SD, Ovisil451 |
High rate of transmittance
and hydroxyl free metal halide lamps etc. (import material produced). |
|
OD Range
|
OD Tolerance
|
Tolerance of Wall Thickness
|
Siding
|
Ovality
|
Bowing/1220mm
|
|||||||
|
<5mm
|
<±2.0%
|
<±8%%
|
10%
|
1.5%
|
<2.5mm
|
|||||||
|
5mm-13mm
|
<±1.5%
|
<±8%%
|
8%
|
1.2%
|
<2.5mm
|
|||||||
|
13mm-30mm
|
<±1.5%
|
<±7%%
|
8%
|
1.0%
|
<3.0mm
|
|||||||
|
30mm-80mm
|
<±1.5%
|
<±8%%
|
8%
|
1.0%
|
<3.0mm
|
|||||||
|
Typical Elements |
Al
|
Fe
|
Ca
|
Mg
|
Li
|
K
|
Na
|
Ti
|
||||
|
|
23.20
|
4.8
|
3.1
|
2.5
|
2.0
|
5.4
|
6.1
|
|
||||
|
Physical properties
|
Reference
|
Physical properties
|
Reference
|
|||||||||
|
Softening point
|
1680℃
|
coefficient of thermal expansion(20-230℃)
|
5.7x10-7cm/cm.℃
|
|||||||||
|
Annealing point
|
1210℃
|
thermal expansion (20℃)
|
1.4W/m.℃
|
|||||||||
|
strain point
|
1120℃
|
Heat(20℃)
|
670J/kg.℃
|
|||||||||
|
Density
|
2.2g/cm3
|
Resistivity(350℃)
|
7x107ohm.cm
|
|||||||||
|
hardiness
|
5.5-6.5Mohs'
|
permittivity
|
3.75
|
|||||||||
|
strength of pulling resistance
|
4.8x107N/m2
|
Dielectric strength
|
5x107V/m
|
|||||||||
|
strength of pressure resistance
|
1.1x109N/m2
|
|
|
|||||||||