Refractory Ceramic Insulator Bushing Spacers Ring Fire Resistant

• Customization: Available
• Application: Refractory, Refractory
• Material: Cordierite High Alumina
• Model NO.: Welding ceramics
• Shape: Ring
• Color: White;Beige
• Specifications2: M10 National Standard
• Specifications3: M11 National Standard
• Specifications4: M12 National Standard
• Specifications5: M13 National Standard
• Specifications6: M16 National Standard
• Specifications7: M19 National Standard
• Specifications8: M22 National Standard
• Type: Ceramic Parts
• Transport Package: Plywood Case
• Specification: M6 National Standard
• Trademark: shangtao
• Origin: Shanghai, China
• Production Capacity: 50000 PCS/Year

Product Description

Characteristic Table of Ceramic Ring
Name		99 Porcelain	95 Porcelain	Zirconia	Talc Porcelain
Main Components		AL203>99%	AL203>95%	ZrO2>94%	MgO SiO2
Physical Property	Density	3.85	3.6	5.9	2.8
	Water Absorption Rate%	0	0	0	0
	Sintering Temperature ºC	1700	1670	1600	1350
Material Characteristics	Hardness HV	1700	1600	1400	800
	Bending Strength 4PT	>3500	>2900	>11000	900
	Compressive Strength KGF/CM2	30000	25000	25000	4000
Thermodynamic Property	Maximum Operating Temperature ºC	1600	1450	1300	1100
	Thermal Expansion Coefficient 10-6/ºC 0-1000ºC	8	7.8	10	6
	Heat Resistant Impact Force T(ºC)	200	220	350	200
	Thermal Conductivity W/M.K	31	22	3	2.5
Electrical Characteristics	Volume Resistivity Ω.CM	>10^12	>10^12	>10^12	>10^12
	Insulation Breaking Strength KT/M	18	16	15	10
	Dielectric Constant 1MHZ(E)	9.2-10.5	9.0-10	12.5	5.8

 Product Characteristics of Ceramic Ring
1. High mechanical strength. 
2. High resistivity and good electrical insulation performance.
3. High hardness. 
4. High melting point and corrosion resistance.