1. Excellent resistance 2. Good quality 3. Small tolorence:+-0.001 4. Ram material: China, Australia, Germany 5. Low price

Alumina Ceramic Rings, Zirconia Ceramic Ring, Abrasive Rings

Features:

1. Excellent resistance2. Good quality3. Small tolorence:+-0.0014. Ram material: China, Australia, Germany5. Competitive price

6. Alumina content covers 80% to 99.8%

7. Many size available, making accroding to supplied darwings

Property		Unit	92% Alumina Ceramic	95% Alumina Ceramic	99% Alumina Ceramic
Density		g/cm3	≥3.63	≥3.68	≥3.83
Water absorption		%	O	O	O
Sintering temperature		°C	1500-1700	1600-1800	1700-1800
Hardness		HV	≥1400	≥1500	≥1650
Flexural strength		Kgf/cm2	3000	3000	3000
Compressive strength		Kgf/cm2	24000	25000	26000
Fracture toughness		Map.m3/2	3~4	3~4	4~5
Maximum temperature		°C	1600	1700	1800
Coefficient of thermal expansion		/°C	8*10-6	8*10-6	8*10-6
Heat shock		T(°C)	220	220	220
Thermal conductivity		W/m.k(25-300°C)	25 14	25 14	25 14
	20°C		>1012	>1012	>1012
Volume resistivity	100°C	>.cm	1012-1013	1012-1013	1012-1013
	300°C		>1010	>1010	>1010
Insulation breakdown strength		KV/mm	14	16	18
Dielectric constant		100MHz(E)	8.5	9	9.5

Looking forwarder to your enquiry. If you want to know more infomation about our ceramic rings,  please contect with us!

Ring