Insulation Alumina Ceramic Parts

• Application: Insulators, Electrical Winding Insulation, Winding Wire Coating Insulation, Electrical Base, Shell, Motor, Insulating Varnish, Switch Baseplate
• Type: Insulation Sleeve
• Chemistry: Organic Insulation
• Material: Alumina
• Thermal Rating: 250 250
• Maximum Voltage: <10KV
• Model NO.: RY-T121
• Classification: Hybrid Insulation Materials
• Certification: UL, ISO9001, SGS
• Color: White
• Brand: Ry
• Transport Package: Wooden Box
• Specification: customized
• Origin: China
• HS Code: 854710000
• Production Capacity: 100000PCS Per Month

Product Description

Ceramic parts 
High purity ceramic alumina tube parameters:
1.Material : High purity alumina oxide 95%-99%
2.Application: Used for all kinds of electric heating equipment and electric equipment, and textile machinery
3.Good smooth and high strength
4. Customized size and drawing 
5. Max working temperature 1800.
6. Out surface can be grinded drilling hole to make tight tolerance and right instillation.
7.Large quantity in stock makes fast delivery and competitive prices.

Main performance index about alumina ceramic tube:

Project		Test the condition	Unit	99 porcelain	95 porcelain	Talc porcelain
Backbone				99%AL2O3	95%AL2O3	MgO.SiO2
Physical property	Density of volume	Normal atmospheric temperature	g/cm^3	3.8	3.6	2.8
	Airtight	Normal atmospheric temperature	.	.Pass	Pass	-
	Absorbing water rate	Normal atmospheric temperature	%	0	0	0
	Temperature that frit		°C	1800	1650	1350
Mechanical performance	Rockwell hardness	Normal atmospheric temperature	HRA	88	86	76
	Resist the intensity of turning back	Normal atmospheric temperature	Mpa	350	320	150
	Compression strength	Normal atmospheric temperature	Mpa	1300	1200	900
Hot performance	Use temperature at most		°C	1700	1600	1200
	Heat resistant shaking	20O°C-1100O°C	10Num	Pass	Pass	Pass
	Hot coefficient of expansion	20O°C-80O°C	×10^-6mm/°C	6.5-8.5	6.5-8.0	5.0-6.2
	Heat-conduction rate	25°C	W/m.k	29	25	2.9
		300°C	W/m.k	18	13	2
Dielectric constant	The medium lossing	1MHz2O°C	×10^-4	≤2.5	≤4	≤8.0
	The angle tangent is worth	1MHz8O°C	×10^-4	≤3.5	≤4.2	-
	Dielectric strength	Normal atmospheric temperature	KV/mm	15	16	20
	Dielectric constant	1MHz2O°C		9-10.5	9-10	≤7.5
	Resistivity of volume	2O°C	Ω.cm	>10^12	>10^12	>10^13
		10O°C	Ω.cm	10^12-10^13	10^12-10^13	10^10-10^11
		30O°C	Ω.cm	>10^12	3.1×10^9	5×10^8

Enqiries welcome !