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| Specification | Based on drawings or require customization. |
| Material | More than 99.99% SiO2 |
| Customized Service | Ends closing, sand blasting, polishing, bending, cutting, pinching, burning mouth and so on |
| Density g/cm2 | 2.2 |
| Maximum operating temperature | 1120℃ |
| Tolerance control | min:±0.01mm (Adjust according to the actual situation) |
Using three coordinates detector, height gauge electronic digital calipers, measuring projector stress gauge to inspect the products' appearance and size. As well, according to customer requirements. All quality control date and report can be found. After training, all operators could be eligible quality inspectors. The measuring tools have under the MSA control.
The product itself is wrapped in bubble wrap, the gaps are filled with foam, and the exterior is packaged in a wooden box that meets export specifications. Please inform us if you have any special requirements.
We have our own laser engraving machine, which can engrave trademarks, texts, etc. on the product itself according to your requirements.
| Thermal Properties | ||
|---|---|---|
| Coefficient of Expansion (20℃-350℃) | 5.5*10-7/℃ | |
| Thermal Conductivity (W/m℃, 20℃) | 1.4 | |
| Specific Heat (J/kg, 20℃) | 670 | |
| Softening Point (viscosity) | 1730℃ | |
| Annealing Point | 1215℃ | |
| Deformation Temperature (long time heat retaining) | 1120℃ | |
| Electrical Properties | ||
|---|---|---|
| Electrical Resistivity (350℃, omh-cm) | 7*107 | |
| Insulating Strength (20℃, KV/em) | 250-400 | |
| Dielectric Constant | 3.7 | |
| Corrosion Amount Medium | Test Condition | Corrosion Rate |
|---|---|---|
| H2SO4 | Density 1.84, 2h, 20℃, g/cm2 | 1.4*10-8 |
| HNO3 | Density 1.4, 2h, 20℃, g/cm2 | 5*10-8 |
| HCl | Density 1.19, 2h, 20℃, g/cm2 | 15*10-8 |
| NaOH | 1%, 2h, 110℃, g/cm2 | 166*10-6 |
| KOH | 1%, 2h, 98℃, g/cm2 | 68*10-6 |
| Mechanical Properties | ||
|---|---|---|
| Density | 2.2 g/cm2 | |
| Compression Strength | 1100 N/mm2 | |
| Bending Strength | 67 N/mm2 | |
| Tension Strength | 48 N/mm2 | |
| Micro Hardness | 8600-9800 N/mm2 | |
| Moh's Hardness | 5.5-6.5 | |