Our high- temperature ovens transform low-purity silica to high-purity fused quartz.
After the quartz blocks are removed from the oven in 29" x 29" x 2.5" block sizes, they are then machined into specialized parts, as required by a customer, or sold in different block or plate sizes for customers to machine themselves. Solar Products' fused quartz is used inside epi reactors, luminescent phosphor ovens, high watt density heaters, etchers, and many other industrial machines.
 Fused Quartz Shapes |
 Solar Products' Fused Quartz |
Purity Levels
The purity level of our translucent fused quartz exceeds 99.995%. Typical impurity values for the quartz are shown below: (ppm by weight)
|
Al
|
Ca
|
Fe
|
K
|
Li
|
Mg
|
Mn
|
Na
|
Ti
|
Zr
|
OH
|
|
18
|
0.4
|
0.3
|
0.7
|
1.0
|
<1.0
|
<1.0
|
<1.0
|
<2.0
|
2.0
|
35
|
Physical Properties
Typical physical properties for Solar Products' translucent fused quartz:
| Property Name |
Value |
Property Name |
Value |
| Density |
2.1 gm/cm3 |
Softening Point |
1670o C |
| Hardness |
5.3 - 6.5
(Mohs' Hardness Scale) |
Annealing Point |
1190o C |
| Tensil Strength |
6800 psi |
Strain Point |
1115o C |
| Compressive Strength |
>160,000 psi |
Dialectic
Properties |
Thermal Expansion
Coefficient |
5.9 X 10-7 cm/cm x oC
[20oC - 320oC] |
Constant
Strength |
3.7
2800 volts/mil |
| Thermal Conductivity |
3.3 X 10-3 gm cal
x cm/cm2 x sec x oC |
Loss Factor |
3.8 x 10-4 |
Note: The above properties in both charts are stated as typical values and may not
necessarily be the maximum or minimum values unless specifically defined as such.
Deviations in these properties may vary from lot to lot.
The figure below charts typical transmittance curves for several thicknesses of our opaque quartz.
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