| Specification | Based on drawings or custom requirement |
|---|---|
| Material | More than 99.99% SiO₂ |
| Customized Service | Ends closing, sand blasting, polishing, bending, cutting, pinching, burning mouth, and more |
| Density (g/cm³) | 2.2 |
| Max Operating Temp | 1120°C |
| Tolerance Control | Min: ±0.01mm (Adjusted according to practical conditions) |
Source Factory | Customizable | Export Quality | Multi-Scene
Using three coordinates detector, height gauge electronic digital calipers, and measuring projector stress gauge to inspect the appearance and dimensional precision of products according to customer requirements. Full quality control data and inspection reports can be provided. All operators are qualified through rigorous inspection training, and all measuring equipment is managed under MSA control.
The product itself is wrapped in bubble wrap, gaps are filled with protective foam, and the exterior is securely packed in a wooden box meeting export specifications. Please inform us if you have customized packaging requirements.
Equipped with in-house laser engraving machines, we can engrave trademarks, logos, serial numbers, and custom texts directly onto the product according to your exact requirements.
| Property Category & Description | Tested Value / Specification | |
|---|---|---|
| Thermal Properties | Coefficient of Expansion (20°C - 350°C) | 5.5 × 10⁻⁷ / °C |
| Thermal Conductivity (W/m°C, 20°C) | 1.4 | |
| Specific Heat (J/kg, 20°C) | 670 | |
| Softening Point (Viscosity) | 1730°C | |
| Annealing Point | 1215°C | |
| Deformation Temperature (Long-time heat retaining) | 1120°C | |
| Electrical Properties | Electrical Resistivity (350°C, ohm-cm) | 7 × 10⁷ |
| Insulating Strength (20°C, KV/cm) | 250 - 400 | |
| Dielectric Constant | 3.7 | |
| Corrosion Resistance | H₂SO₄ (Density 1.84, 2h, 20°C) | 1.4 × 10⁻⁸ g/cm² |
| HNO₃ (Density 1.4, 2h, 20°C) | 5 × 10⁻⁸ g/cm² | |
| HCl (Density 1.19, 2h, 20°C) | 15 × 10⁻⁸ g/cm² | |
| NaOH (1%, 2h, 110°C) | 166 × 10⁻⁶ g/cm² | |
| KOH (1%, 2h, 98°C) | 68 × 10⁻⁶ g/cm² | |
| Mechanical Properties | Density (g/cm³) | 2.2 |
| Compression Strength (N/mm²) | 1100 | |
| Bending Strength (N/mm²) | 67 | |
| Tension Strength (N/mm²) | 48 | |
| Micro Hardness (N/mm²) | 8600 - 9800 | |
| Mohs Hardness | 5.5 - 6.5 | |
A: Yes, we welcome sample orders to test and verify quality performance.
A: Standard production and delivery are completed within 15 days after receiving the deposit.
A: We maintain a low MOQ; 1pc for initial sample evaluation and checking is available.
A: Firstly, inform us of your specific requirements or application. Secondly, we provide a quotation based on your specifications or our technical suggestions. Thirdly, the customer confirms the samples and places the deposit. Fourthly, production is arranged immediately.
A: Small orders are shipped via DHL, UPS, FedEx, or TNT and usually take 3-5 days to arrive. Air freight and sea freight options are also available for larger shipments.
A: Yes, we provide full custom services including precision cutting, bending, sand blasting, and laser engraving for logos and marks according to your CAD drawings.