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99.5 Alumina ceramic

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99.5% Alumina Ceramic Performance
99.5% Alumina Ceramic is white powder or fine sand, with good fluidity, stable performance, less soluble in acid and alkali solution, and good sintering performance. As 99.5% Alumina Ceramic material for high alumina refractories, electromagnetic devices and polishing and grinding products. High density and high impact energy can greatly improve the grinding efficiency.The bottom abrasion can ensure the purity of the 99.5% Alumina Ceramic crushed material, and its wear resistance is 2030 times higher than the traditional ball-stone.Good chemical stability, corrosion resistance, can be used in acid medium.

Application of 99.5% Alumina Ceramic :
precision bearing, instrument, instrument, pen making, mechanical parts, punching hole, oil field, hydrochloric acid laboratory, hardness measuring instrument, fishing gear, counterweight, decoration, finishing and other high-end industries.

99.5% Properties of Alumina

Mechanical properties	Unit	Parameter
The density of	gm/cc (lb/ft3)	3.89
porosity	% (%)	0
color	—	beige
Bending strength	MPa (lb/in2x103)	379
Modulus of elasticity	GPa (lb/in2x106)	375
The shear modulus	GPa (lb/in2x106)	152
Modulus of elasticity of volume	GPa (lb/in2x106)	228
Poisson's ratio	—	0.22
The compressive strength	MPa (lb/in2x103)	2600
hardness	Kg/mm2	1440
Fracture toughness	MPa•m1/2	4
Maximum no-load service temperature	°C (°F)	1750
Heat energy
Thermal conductivity	W/m°K (BTU•in/ft2•hr•°F)	35
Coefficient of thermal expansion	10–6/°C (10–6/°F)	8.4
Specific heat	J/Kg•°K (Btu/lb•°F)	880
electrical
Dielectric strength	ac-kv/mm (volts/mil)	16.9
permittivity	@ 1 MHz	9.8
Dissipation factor	@ 1 kHz	0.0002
The loss factor	@ 1 kHz	—
Volume resistivity	ohm•cm	>1014

Properties of Alumina/Aluminum Oxide (Al2O3)
1.Very good electrical insulation (1x1014 to 1x1015 Ωcm)
2.Moderate to extremely high mechanical strength (300 to 630 MPa)
3.Very high compressive strength (2,000 to 4,000 MPa)
4.High hardness (15 to 19 GPa)
5.Moderate thermal conductivity (20 to 30 W/mK)
6.High corrosion and wear resistance
7.Good gliding properties
8.Low density (3.75 to 3.9 g/cm3)
9.Operating temperature without mechanical load 1,000 to 1,500°C.
10.Bioinert and food compatible

99.5% Alumina Ceramic Products and Aplications
– Pieces, Plates, Boards, Trays, etc. in Alumina-Ceramic / Cordierite-Mullite
– Tubes, Rods, Rollers, Supports, etc. in Alumina-Ceramic / Cordierite-Mullite
– Protection, Thermocouples, Insulation, etc. in Alumina-Ceramic / Cordierite-Mullite
– Pieces, Plates, Tubes, Rods, Rollers, etc. in Zirconium Oxide
– others

For more information about 99.5% Alumina Ceramic,please contact our engineers in time >>>

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99.5% Alumina Ceramic Performance

99.5% Alumina Ceramic is white powder or fine sand, with good fluidity, stable performance, less soluble in acid and alkali solution, and good sintering performance.

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Dongguan Mingrui Ceramic Technology Co., Ltd.

Yongzhou Mingrui Ceramic Technology Co.,Ltd.