customized 99 alumina beige Ceramic Bushing sleeves
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Alumina Ceramics:
Chemical Alumina is a general term for various alumina, aluminum hydroxide and aluminum-containing compounds in addition to metallurgical grade alumina. It is collectively referred to as non-metallurgical grade alumina in the world. It is also commonly known as multi-species alumina in China. Processes that differ in performance from metallurgical grade alumina are often referred to as specialty aluminas. There are many kinds of chemical aluminas. According to the non-ferrous metal industry standard YS/ton 619-2007 "Chemical Alumina Types and Brand Nomenclature", chemical aluminas are classified into five categories according to chemical composition: aluminum hydroxide series, special alumina. Series, pseudo-boehmite series, zeolite series and calcium aluminate cement series. Now, aluminum salts such as polyaluminum chloride, aqueous sodium aluminosilicate, and fluoride salts, sodium aluminate, gallium and gallium compounds, partial alumina ceramics, and corundum refractories are also included in the chemical alumina range. The chemical alumina is characterized by many varieties, high added value, high technical content, wide application fields, continuous expansion, relatively stable price and environmental friendliness. Therefore, it has become a very important branch of the aluminum industry. China is a large alumina producer with more production processes than any other country. It is easy to realize the grafting of the production of chemical alumina in the process, especially the aluminum hydroxide produced by sintering, which has high natural whiteness. . The gap between China's chemical alumina quality and foreign advanced level is mainly reflected in: chemical purity, crystal form, particle size distribution, particle morphology, pore structure, specific surface area, shrinkage rate and other physical and chemical indicators can not be effectively and stably controlled, can not It satisfies the needs of users very well, especially the requirements of those high-tech industries.
properties: High hardness, high strength, wear resistance, corrosion resistance, high temperacture (1600°), good thermal diffusivity, good insulativity, low cost etc.
Data Sheet↓
Color: White/Ivory Density: 3.9g/cm3 Alumina Content: 96% 99% 99.5% Gas permeability: 0 Water Absorption: 0 MONS' Hardness: 82 Vickers Hardness (Hv50): 15.7(1600) Gpa(Kg/mm²) Flexural Strength(20°C): 330Mpa Compressive Strength(20°C): 2000Mpa Fracture Toughness (20°C): 4 MPam1/2 Thermal Conductivity(20°C): 27.5W(m.K) Thermal Expansion Coefficient: 7.6 10-6/°C Thermal Shock Resistance: 200 △T°C
Maximum use temperature 1650°C
Dielectric Strength: >10 KV/mm
Dielectric Constant: 9.1er
Dielectric Loss Angle(1MHz): 0.0002-0.0003
Volume Resistivity(20°C): >1014Ω.cm
Application industry: Machinery, electronic, chemical, petroleum etc. Specific application: Electrical ceramic substrate, plunger, sealing ring etc.
Why Choose Us? 1.12 years of professional production industrial ceramics factory 2.High quality products with low price 3.High precision parts with lowest tolerance 4.Short time for production 5.Has a group of experienced, professional and efficient R&D team 6.Has a good reputation in China and abroad. 7.MOQ is not limited, small quantity is welcome.
8.Vigorous team and good after-sales service
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A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.