99.5% pure Refractory Alumina tube for furnace, High Quality China 99.5% pure Refractory Alumina tube for furnace Suppliers and Manufacturers

99.5% pure Refractory Alumina tube for furnace

$99.5% pure Refractory Alumina tube for furnace$

Supplier Info

[China Supplier]

Contact Person : Mr. Qin James

Tel : 86-371-67823373

Fax : 86-371-67822830

Product Detail

99.5% pure Al2O3 ceramic tube 1.Smooth surface, excellent Wear-resistantce 2.Long service life. 3.high purity:>=99.5%

99.5% pure alumina ceramic tube for furnace

Character:

1.Smooth surface, excellent Wear-resistantce 2.Long service life. 3. high purity: >=99.5%

4.High Temperature Resistance: 1800C

5. Length:20-3000mm

Be used in thermocouple protection and various furnace, we also can design both open for two ends, and one open, the other closed.

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.

99.5% pure Refractory Alumina tube for furnace