Chongqing Silian Optoelectronic Science & Technology Co., Ltd.
| Payment Terms | Western Union, MoneyGram, T/T |
| Supply Ability | 20,000 pcs/month |
| Delivery Time | 5-8 weeks |
| Packaging Details | Wooden packing |
| Product Name | Sapphire Synthetic Crystal |
| Purity | ＞99.996% |
| Density | 3.98g/cm³ |
| Melting | 2053℃ |
| Refractive Index | 1.762~1.770 |
| Light Transmission | ≥85℃ |
| Hardness | 9(mohs) |
| Brand Name | SILIAN |
| Model Number | Customized |
| Certification | SGS/ ISO |
| Place of Origin | Chongqing，China |
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Product Specification
| Payment Terms | Western Union, MoneyGram, T/T | Supply Ability | 20,000 pcs/month |
| Delivery Time | 5-8 weeks | Packaging Details | Wooden packing |
| Product Name | Sapphire Synthetic Crystal | Purity | ＞99.996% |
| Density | 3.98g/cm³ | Melting | 2053℃ |
| Refractive Index | 1.762~1.770 | Light Transmission | ≥85℃ |
| Hardness | 9(mohs) | Brand Name | SILIAN |
| Model Number | Customized | Certification | SGS/ ISO |
| Place of Origin | Chongqing，China | ||
| High Light | 20mm 40mm sapphire crystal ，Synthetic 40mm sapphire crystal ，100mm single crystal sapphire | ||
Sapphire synthetic crystal with excellent chemical stability, mechanical properties and light transmittance
Description
Synthetic sapphire (Corundum or Al2O3) single crystal is a highly trusted material with its excellent chemical stability, mechanical property, and light transmission. It is often used in aggressive environments where reliability, optical transmission and strength are required.
Specification
| Property | Sapphire | Glass |
| Density | 3.98g/cm³ | ≈2.4g/cm³ |
| Hardness | 9(mohs) | 6~6.5(mohs) |
| Melting | 2053℃ | No Definte Melting Point |
| Refractive Index | 1.762~1.770 | 1.52 |
| Light Transmission | ≥85℃ | ≥87℃ |
| Dielectric Permeabillty | 9.4@300kat A axis~ 11.58@300kat Caxis |
3.5~3.7(Under 1 mhz) |
| Thermal Capacity | 0.10(cal/℃) | 0.19(cal/℃) |
| Thermal Conductivity | 46.04@0℃ 25.12@100℃ 12.56@400℃(W/(m.k)) |
0.81~0.93(W/(m.k)) |
| Coefficient of Thermal Expansion | 6.7x10-6/℃ parallel to Caxis 5.0x10-6/℃ perpendicular to C axis |
9~10x10-6 /K |
| Chemical Formula | AL2O3 | SIO2 |
| Crystal Structure | Hexagonal System a=4.76A c=12.99A |
Non-crystal |
| Purity | ＞99.996% | Mixture |
Flame melting——Synthesis principle
Pure alumina (Al2O3) powder can produce colorless synthetic corundum, adding a small amount of color-causing elements to obtain different colors.
Process flow
① Al2O3 powder is screened, and the powder falls along the inner tube of the blowing pipe facing downwards.
② When the temperature of the hydrogen-oxygen flame reaches the melting point of corundum, the corundum melts and the molten powder falls onto the platform.
③ The platform gradually lowered, and the falling molten powder formed pear crystals.
④ It takes about 10 hours to form synthetic corundum with a diameter of 20mm and a length of 100mm.
⑤ After the growth is over, the crystal cools down. During the growth process, considerable stress is generated inside the crystal. Therefore, if the heating is stopped, the crystal may split into two halves along the longitudinal direction (//C axis). Before cutting, hit the crystal with a hammer and split it, which can also release part of the stress.
About Us
SILIAN is a professional manufacturer of optical glass, laser accessories and acrylic products. Our factory has advanced production equipment and strong technical force, such as large-scale laser engraving and cutting machine, CNC computer engraving and cutting machine, copying machine, etc., and constantly introduces new technology, new technology, new equipment, and strictly controls the quality in the material opening, grinding, polishing, hot bending, silk screen printing, etc, Fine workmanship. The products are mainly exported to Europe, America, Middle East, Southeast Asia, and South America.
Customers need to know:
1. The products are made according to the requirements of customers. Please contact us before placing an order to confirm the detailed production process, quantity, production period, logistics and other relevant information.
2. Customization needs to know:
(1) plate Customization: please directly provide dimensions (length * width * thickness, and color quantity) (please consult customer service quotation).
(2) product processing: please send drawings to the owner, such as CDR, AI, CAD and other vector drawings, and inform the thickness, (consult customer service quotation) to give you a quotation. No friends can draw by hand and take photos for us. We need drawings for complex processing.
3. Please confirm the size and drawing carefully before photographing. Once processed, it will not be returned or changed.
4. There is a certain tolerance for processing and material thickness. Buyers who require no difference should be merciful! The tolerance is about 0.3mm. Once photographed, we do not accept any return or exchange due to tolerance!
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Seller
Year Established:
2008
Total Annual:
65,000,000-70,000,000
Employee Number:
400~500
Ecer Certification：
Active Member
Chongqing Silian Optoelectronics Science & Technology Co., Ltd was founded by China Silian Instrument Group Co., Ltd for the development of LED industry. After the acquisition of Honeywell Sapphire business, the company has become China’s first enterprise with the world’s top-quality... Chongqing Silian Optoelectronics Science & Technology Co., Ltd was founded by China Silian Instrument Group Co., Ltd for the development of LED industry. After the acquisition of Honeywell Sapphire business, the company has become China’s first enterprise with the world’s top-quality...
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