High Purity Alumina Ceramic Tubes Used for High Temperature Furnace

• Customization: Available
• Refractoriness (℃): 1580< Refractoriness< 1770
• Shape: Pipe
• Name: Alumina Ceramic Tube
• Type: Refractory Material
• Material: Alumina Ceramic
• Transport Package: Wooden Boxes
• Trademark: SHIBO
• Origin: Henan, China(Mainland)
• Production Capacity: 10000PCS/Months

Product Description

High purity Alumina ceramic tubes used for high temperature furnace
1. Extreme high temperature stability under reducing, inert and high vacuum condition under high temperature up to 1800C.
2. Extreme wear and abrasion resistance.
3. Chemical corrosion resistance under high temperature.
4. High dielectric properties.
5. Gas tight for many applications to provide protective atmospheres or high vacuum at high temperature to eliminate contamination or impurity. 

Chemical competent	Al2O3	≥85%
	SiO2	<12%
	Fe2O3	<0.5%
Alkaline matter		<2.5%
Density		2.6 g/cm3
Hardness		7 M
Water absorption		<0.2%
Rupture  strength		>1300kg/cm2
Gas tightness		Kept for ten minutes at negative pressure of 1.3Kpa. The pressure drop is less than 0.3Kpa.
Heat 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		>2*10(5) Ω@cm/1300ºC
Breakdown voltage		18kv/cm
Expansion coefficient		5*10(-8)
Temperature for use		Long-term: 1400ºC  Short-term: 1600ºC
Chill and abrupt heat		1300ºC~room temperature not cracking thrice.