Xingfeng Ceramics Factory Fengfeng Ceramics Co.,Ltd Xingchang Electronic Ceramics Research Institute

Current location：Electrical Ceramics

(A75 ceramics)
Essential components	75％Al₂O₃
Material characteristics	Density		g/cm³	3.2
	Water Absorption		％	0
	Agglomeration temperature		℃	1430
Physical characteristics	Hardness		HV	1000
	Anti—Folding Strength		Kgf/cm²	2000
	Compressive Strength		Kgf/cm²	10000
	Tenacity		Map.m^3/2	-
Thermodynamic property	Highest application temperature		℃	1100
	Thermal expansion coefficient 0-1000℃		/℃	6*10-6
	Heat resistance		T(℃)	200
	Thermal conductivity		W/m.k(25-300℃)	15 10
Electrical specification	Volume resistivity	20℃	>.cm	>1012
		100℃		1012-1013
		300℃		>109
	Insulation breakdown intensity		KV/mm	15
	Dielectric constant		100MHz(E)	8.3

The A75 ceramics possess good intensity，dielectric strength and heat resistance．They are widely used as shell insulation in electric appliances such as microwave oven，electric heating tube，igniter and so on．