High quality magnesium oxide ceramic crucible for melting metals
USD $5 - $150 /Piece
Min.Order:2 Pieces
Shanghai Kessen Ceramics Co., Ltd.
Company introduction
KESSEN is one of the world’s leading advanced ceramic materials companies in the design, manufacture and marketing of high-tech ceramics. We are major supplier alumina products, zirconia products, magnesia products, Si3N4products and AIN products.These are used in a wide range of applications in Electricity, information, power, automobile, and petrol .
Application
Magnesia crucibles have found application in the superalloy industry, nuclear industry and chemicals industry where corrosion resistance is required. Manufacture is by firing isostatically pressed or slip cast shapes made from fused magnesia. Various purity grades are available. Additives are employed to promote sintering or restrict crystal growth. These range from clay to yttria and alumina depending on application. Crucibles with stability of 2400oC in air, 1700oC in reducing atmospheres, 1600oC in vacuum and 1400oC in hydrogen have been reported in the literature.
Specification
Physical & Electrical Characteristics | Unit | MgO |
Contents | % | 96 99.5 |
density | g/cm3 | 3.56 |
hardness | Mohs' | 6 |
liner thermal expansion | /oC (40o to 250o) | 8.6 x 10-6 |
work temperature | oC | 2400 |
flexual strength | MPa | 84 |
compressure strength | MPa | 14 |
fracture strength (5 distance) | MPa | 125 |
thermal conductivity | W/m.k | 15.9-42 |
Volume resistivity (100 oC) |
| >1012 |
dielectric constant 1.0 MHz | -- -- | 5.8 |
Max size | -- -- | 250mm long |