Product Details

high purity 99% Industrial precise alumina ceramic tube

STA Universe Group CO.,LIMTED is a professional manufacturer of the alumina ,zirconia ceramic products and have exported to many countries .Our main products have:

Almina ceramic tube .protection tube ,crucible ,bar ,insulating tube and many other industrial parts .

Aluminium oxide ceramics are distinguished by their extreme hardness, strength and temperature stability and exhibit a high degree of resistance to wear and corrosion, even at high temperatures. They are also excellent electrical insulators, while simultaneously acting as adequate thermal conductors (in a densely sintered condition

Characteristics

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.

Standard Sizes

OD/ID: 6/3mm, 8/5, 10/7, 12/8, 14/10, 16/12, 20/14, 25/19, 30/25, 40/34, 50/44, 60/53, 70/63, 80/70, 85/75, 90/80, 100/90, 110/100, 120/110, 130/120, 140/130, 150/140, 160/150, 180/170mm

Length: 10~3000mm

Note: Other size can be produced according to customers’ requirement. Crucibles with different shape and various kinds and specifications can be provided by our company.

Technical data :

Item		Unit	Alumina	Alumina	Alumina	Zirconia
Content		%	90	95	99	94.5%
Bulk Density		g/cm³	≥3.40	≥3.60	≥3.85	≥6.0
Airtightness			pass	pass	pass	pass
Bending Strength		kgt/cm²	2300-2700	2800-3400	3000-3600	600
Thermal Shock Resistance			pass	pass	pass	pass
Coefficient of Expansion		x10^-6Mm/°C	6.3-7.3	6.5-8.5		100
Dielectric Constant		1MHz20°C	9-10	9-10	9-10.5
Dielectric Loss Tangent	1MHz20°C	x10^-4	≤6	≤4	≤2.5
Dielectric Loss Tangent	1MHz20°C	x10^-4	≤8.5	≤4.2	≤3.5
100°CVolume Resistivity		Ωcm	>10¹³	>10¹⁴	>10¹⁴	>10¹⁴
Breakdown Strenght		KV/mm	15	15	15	20
Rockwell Strength		HR	≥86	>86	>86	≥92
Color			Red, White,Pink,Light Pink,Ivory	Red, White,Pink,Light Pink,Ivory	Red, White,Pink,Light Pink,Ivory	black
Maximum Temperature		°C	1500	1650	1750

Application

Alumina ceramic tube is mainly applied to wear, serious scour of material handling occasions, such as coal-fired power generation, metallurgy, coal, mining, industry, and other geological materials pipeline, as well as the use of electronic appliances such as insulation pipe; alumina ceramic rods is widely used in the industry of resistance to temperature and thermostat, as a resistance ceramic matrix and two-metal thermostat used in ceramic-top column

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