Product Details

Product Description

1)metallized alumina ceramic

2)Mo-Mn or W metallized

3)Ni or Sn plating

4)high dielectric strength & high voltage resistivity

Our products produce excellent sealing and connecting performance with high mechanical strength.They can be welded to various king of hard soleder,such as gold,silver and copper.They are extensively used in gas electrical discharge devices,electronics ,power generators,telecom,metallurgy,machinery,aviation and military.

Materials Performance

	Item		Unit	Performance
				Alumina ceramic				steatite ceramic
				90%	92%	95%	96%	steatite ceramic
Ceramic Body	Appearance	colour	-	White,Ivory white,Brown,Black				White,Off-white
	Mechanical Characters	Bulk Density	g/cm3	≥3.6	≥3.65	≥3.7	≥3..75	2.7
		Water Absorption	%	0				0
		Flexural strength	MPa	280	300	310	320	150
		(HV) Hardness	GPa	12				5.8
	Thermal Characters	Coefficient of linear thermal expansion	20℃~800℃ ×10-6mm/℃	6.3~7.3	6.4~7.4	6.5~7.5	6.8~7.8	8.0
	Thermal Characters	Thermal Conductivity	W/(m.K)	12	16	20	23	2
	Electrical Characters	(1MHz) Dielectric constant(1MHz)	—	9~10	9~10	9~10	10	7.5
		Dielectric loss angle	×10-4	≤6	≤5	≤4	≤3	8
		Dielectric Strength	KV/mm	15	20	24	28	18
Metalized Ceramics		Gas leakage coefficient	Pa.m3/s	≤10-8				-
		Volume resistivity	Ω.cm	≥1015				-
		Combined strength	MPa	≥120				-
		Thickness of Metal	μm	≥20				-

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