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VHANDY OEM high temperature resistance alumina ceramics and metallization ceramic sleeve
1.VHANDY Encyclopedia
Alumina ceramic is the most mature of the engineering ceramics, offering excellent electrical insulation properties together with high hardness and good wear resistance but relatively low strength and fracture toughness.
Alumina Ceramics are generally white but may also be pink or ivory. The colour is derived from either the sintering additives or impurities in the raw materials. VHANDY ceramic produces a range of high purity alumina ceramics in the range of 95% – 99.8% purity.
High purity alumina ceramics are ideal for environments where resistance to wear and corrosive substances are required. Alumina ceramic has excellent thermal stability, which means that it is widely used in areas where resistance to high temperatures is essential.
Alumina ceramic is the material of choice for alumina wear parts. The proven wear and heat resistance of alumina wear parts makes them ideal for the manufacture of wear-resistant components.
Alumina has a high melting point, high hardness,although mechanical strength is reduced at temperatures above 1000 C. Due to the relatively large coefficient of thermal expansion, thermal shock resistance is reduced.
Alumina is an electrically insulating material, with a high electrical resistivity, increasing with purity.
Good chemical stability of alumina leads to high corrosion resistance. It is insoluble in water and only slightly soluble in strong acid and alkaline solutions. Testing has shown that the low chemical solubility of alumina ceramics components makes them highly resistant to chemical corrosion. This is what makes high purity alumina the material of choice for components in a wide range of industrial applications.
If you would like more information on alumina ceramics, please feel free to call our friendly team on 008613998118591.
2.Advanced Ceramics Features
1) A variety of specifications available 2) Satisfy various technical request
3) Lower medium spoilage 4) Good insulation performance
5) High strength 6) Wear resistant performance
7) High density 8) refractory and high temperature resistance
Item | Unit | 95% Al2O3 | 99% Al2O3 | 99.7% Al2O3 | Mullite | ZTA |
% Al2O3 | % | 95 | 99 | 99.7 | 62.5 | 70 |
Density | g/cm³ | 3.6 | 3.89 | 3.9 | 2.8 | 4.3 |
Porosity | % | 0 | 0 | 0 | -- | 0 |
Firing Temp | °C | 1680 | 1700 | 1800 | <1450 | 1600 |
Hardness | HV | 1500 | 1600 | 1700 | 1000 | 2000 |
Flexural Strength | Kgf/cm² | 3000 | 3500 | 3500 | 1100 | 4500 |
Compressive Strength | Kgf/cm² | 25000 | 30000 | 30000 | 6000 | 45000 |
Fracture Toughness | MPa/m | 3~4 | 3.8 | 4 | -- | 5~6 |
Max Operating Temp | °C | 1450 | 1600 | 1700 | 1000 | 1500 |
Coefficient | cm/cm/°C | 8 | 5.6 | 8 | -- | 8 |
Thermal Expansion | (RT to 700°C) | |||||
Thermal Conductivity | W/m°K | 22 | -- | 27 | 4.2 | 2.7 |
Volume Resistivity | 20°C (ohm - cm) | 1012 | 1012 | 1012 | >1012 | 1012 |
100°C (ohm - cm) | 1012~1013 | 1012~1013 | 1012~1013 | 1010~1012 | 1012~1013 | |
300°C (ohm - cm) | 1010 | 1012 | 1012 | -- | 1010 | |
Dielectric Strength | Volts/mil | 210 | -- | 220 | -- | 210 |
Shenyang Vhandy Technology Co., Ltd. has been committed to the design, development and manufacture of industrial ceramics, specialized in manufacturing and exporting ceramic products, such as zirconia ceramic, alumina ceramic, cordierite, mullite, ZTA, silicon carbide, silicon nitride, boron carbide, boron nitride, etc.
After years of efforts and explorations, rich experience has been accumulated, especially in domestic and oversea ceramic processing. Producing capabilities include the latest pressing and compaction technologies, state of the art CNC green machining, sintering and precision diamond grinding techniques. With senior scientists and skilled technicians, we can handle customer drawings under the R&D, producing and processing all types of ceramic pieces. Our products have already passed the ISO 9001 quality certification system and SGS ROSH system. Because of stable performance and high precision, our products have been successfully used in various areas, including electronic, mechanical, aerospace, textile, chemical fileds, as well as scientific researches.
Quality, service and reputation are three main purposes of our company. We will manage our production and check standards strictly according to client’s drawings. We promise we will spare no efforts to serving our clients with high-quality products. Welcome clients around the world come to contact us.
Q: Are you trading company or manufacturer?
A: We are manufacturer.
Q: How long is your delivery time?
A: Generally within 30 working days, it is according to quantity.
Q: Do you provide samples? Is it free or extra?
A: The samples can be provided, but the shipping cost should be on buyer's account.
Q: What is your term of payment?
A: Payment<=10000 USD, 100% in advance. Payment>=10000 USD, 70% T/T in advance, balance before shipment.
