Complaint
Chemical composition (unit: ppm)
| AL | Fe | K | Na | Li | Ca | Mg | Cu | Mn | Cr |
| 5-12 | 0.19-1.5 | 0.71-1.6 | 0.12-1.76 | 0.38-0.76 | 0.17-1.23 | 0.05-0.5 | 0.05 | 0.05 | <0.05 |
| Range of OD | OD | WT | Siding | Out of Round | Bow/1220mm |
| ≤6mm | ±2.0% | ±10% | 12% | 2.00% | 2.5mm |
| 6.00mm-15.00mm | ±1.25% | ±8% | 10% | 1.50% | 2.5mm |
| 15.00mm-20.00mm | ±1.25% | ±10% | 15% | 1.50% | 2.5mm |
| 20.00mm-25.00mm | ±1.25% | ±10% | 15% | 1.50% | 3.0mm |
| 25.00mm-30.00mm | ±1.35% | ±12% | 15% | 1.50% | 3.0mm |
| 30.00mm-80.00mm | ±1.5% | ±14% | 15% | 2.00% | 3.0mm |
| 214 | 219 | 254 | |
| Density (g/cc) | 2.2 | 2.21 | 2.21 |
| Coefficient of Thermal Expansion(cm/cm°C) | 5.5*10-7 | 5.9*10-7 | 6.7*10-7 |
| Softening Point (°C) | 1683 | 1660 | 1615 |
| Annealing Point (°C) | 1215 | 1204 | 1163 |
| Strain Point (°C) | 1120 | 1106 | 1066 |
| Refractive Index | 1.4585 | 1.456 | 1.46 |
| Specific Heat (j/kgOK) | 670 | 700 | 690 |
| Compressive Strength (Pa) | >1.1*109 | 0.94*109 | 0.55*109 |
| Youngs Modulus (Pa) | 7.2*1010 | 7.5*1010 | 7*1010 |
1.High temperature resistance
The softening point temperature of quartz glass is about 1730 ° C, which can be used for a long time at 1100 C, and the maximum temperature for short time can reach 1450 C. YONGSIN QUARTZ was founded in 1998 as a joint venture. It applies itself to developing, manufacturing and marketing high performance specialty fused silica products, refractory products and ceramics. Its major customers are in the electronic, foundries, refractory and glass industries.
YONGSIN QUARTZ main goal is to be responsive to its customers needs with outstanding products, materials and service to improve the end products quality and lower production costs. We make customer our first priority. We share their problems and challenges by working with them as business partners to develop successful solution.
YONGSIN QUARTZ enforces a broad, system-wide quality assurance program. Manufacturing standards are certified to ISO 9001: 2000 by Chinese Government.
1.Q:Can I have a sample order?
A:Yes.we welcome sample order to test and check quality.Mixed samples are acceptable
2.Q:Can I customize the printing of the packing and print our logo on the ir lamps?
A:Yes.we provide OEM and ODM service.our advantage is customized accordig your request.
3.Q:What about the lead time for mass production?
A:It depends on the order quantity and the season you place the order. Generally speaking, the lead time of MOQ is about
7-15 days. We suggest that you start inquiry at least two months before the date you would like to get the products at your country.
4.Q:Do you offer guarantee for the products?
A:Yes,we offer 1 years warranty to our products.
5.Q:How to order?
A:1.Tell us the model or the size you want to order,I will estimate shipping cost for you soon
2.If no problem about price.I will send you PI for your confirm.We can accept PAYPAL WESTERN UNION.T/T.L/C and so on
3.Producing and shipping will be arranged soon after order confirmed.
4.photos will taked for you to confirm and deliver the goods soon.
5.Tracking number will be provided,and tracking frequently for you!
