30-99.7% High Alumina Corundum Pipe Tube
1.High working temperature
2.High strength;Max.working temperature 1800 Degree
20 YEARS PROFESSIONAL FOR HIGH ALUMINA/SILICON CARBIDE PIPE,TUBE AND CRUCIBLES ETC.WITH VERY REASONABLE PRICES!!! ISO9001:2000 APPROVED COMPANY!
Alumina Pipe and Crucibles are manufactured for more than 20 years and have a skill production technology in different shapes and range of sizes from few milliliters to several liters, these fully dense, high purity an high temperature use, fine grain products find use in a range of high temperature applications such as metal processing / molten glass, rapid thermal cycling, gemstone purification for jewelry industry etc. Majodrity of applications require the ceramic to be impervious, porous forms can also be made on order.
Technical Data:
Chemical competent | Al2O3 | ≥99.5% |
SiO2 | <0.2% | |
Fe2O3 | <0.1% | |
Alkaline matter | <0.1% | |
Density | 3.9 g/cm3 | |
Hardness | 9 M | |
Water absorption | <0.1% | |
Ruptures trength | >2000kg/cm2 | |
Gas tightness | Kept for ten minutes at negative pressure of 1.3Kpa. The pressure drop is less than 0.3Kpa. | |
Thermal tolerance | Insert the pipe into the furnace at a depth of 20mm. Heat to 1600ºC and maintain for 30 minutes. | |
Alkali tolerance | In the Na2CO3 solution of 2N concentration, boil for 15 hours with the weight loss not greater than 20mg/dm2. | |
Volume resistance | >9*10(5) Ω·cm/1600ºC | |
Breakdown voltage | 20kv/cm | |
Expansion coefficient | 8*10(-8) | |
Temperature for use | Long-term: 1600ºC Short-term: 1800ºC | |
Chill and abrupt heat | 1500ºC~room temperature not cracking thrice. | |
COULD MAKE AS CUSTOMER'S DIMENSIONS/DRAWING AND COMPOSITIONS!
