High Purity Fused Silica Wafer 4'' 6'' 500um SiO2 HPFS with Excellent Chemical Resistance
Fused Silica (SiO2) wafers are made from high purity fused silica, ground and polished to optical grade on both sides. The fused silica wafers are suitable for many optical applications because of their excellent optical transmission characteristics. Fused silica also has excellent chemical resistance against a wide variety of solvents, as well as exceptional heat resistance, with high dimensional stability over a wide temperature range thanks to its ultra low thermal expansion coefficient.
Material | High Purity Fused Silica |
Diameter | 76.2 +/- 0.1mm, 100 +/- 0.1mm, 150 +/- 0.1mm |
Thickness | 500 +/- 25 um500 +/- 25 um |
Primary Flat | 22.5 +/- 2.0 mm, 32.5 +/- 2.0 mm |
Surface | Double Side Polished (DSP) with surface roughness Ra < 1 nm |
S/D | 40/20, 60/40 |
TTV | < 5 um, < 10 um |
Edge | with Bevel, C shape |
Fused Silica | |||
Mechanical | Units of Measure | SI/Metric | (Imperial) |
Density | gm/cc (lb/ft3) | 2.2 | -137.4 |
Porosity | % (%) | 0 | 0 |
Color | — | clear | — |
Flexural Strength | MPa (lb/in2x103) | — | — |
Elastic Modulus | GPa (lb/in2x106) | 73 | -10.6 |
Shear Modulus | GPa (lb/in2x106) | 31 | -4.5 |
Bulk Modulus | GPa (lb/in2x106) | 41 | -6 |
Poisson’s Ratio | — | 0.17 | -0.17 |
Compressive Strength | MPa (lb/in2x103) | 1108 | -160.7 |
Hardness | Kg/mm2 | 600 | — |
Fracture Toughness KIC | MPa•m1/2 | — | — |
Maximum Use Temperature (no load) | °C (°F) | 1100 | -2000 |
Thermal Conductivity | W/m•°K (BTU•in/ft2•hr•°F) | 1.38 | -9.6 |
Coefficient of Thermal Expansion | 10–6/°C (10–6/°F) | 0.55 | -0.31 |
Specific Heat | J/Kg•°K (Btu/lb•°F) | 740 | -0.18 |
Dielectric Strength | ac-kv/mm (volts/mil) | 30 | -750 |
Dielectric Constant | @ 1 MHz | 3.82 | -3.82 |
Dissipation Factor | @ 1 MHz | 0.00002 | -0.00002 |
Loss Tangent | @ 1 MHz | — | — |
Volume Resistivity | ohm•cm | >1010 | — |
FAQs:
A: We look at ourselves as the piezo wafer specialist. We are the very first to work with Single Crystal Quartz in China about 30 years ago. Then gradually we step in the field of LiNbO3, LiTaO3, Quartz glass, LGS, CTGS etc. Especially, if you are looking for a piezo quartz supplier, we are the ultimate choice! We export millions of quartz blanks each year because we master the AT, SC and IT cuts with superior angle precision.
A: Yes, of course. We can fabricate as per your request. In addition, we are so experienced with piezo wafers that we can provide you relevant suggestions if you are not 100% sure about your choice. Besides, we do have some standard wafers in stock, please check with us.
A: Yes, we would suggest you go with the courier agent you are most familiar with (DHL, FedEX, UPS etc.). We can ship via your account. And, of course, we will pack the products safely in acceptable size to help you save the shipping cost. If you need us to take care of the freight, it’s also not a problem. We also have good discount with the international courier companies.
A: The wafer products are fragile and sometimes expensive. The last thing, as the manufacturer, we want to see is the products we make were damaged during courier. As a result, we will pack the wafers adequately and put them in a proper carton filled with buffer sponge. However, accidents are inevitable sometimes. So, please follow the “Acceptance check” steps shown in the drawings below. If the unwanted happened, we will either give the replenishment or refund if you follow the checking steps.
Acceptance Check