99 Alumina Ceramic - Alumina Ceramic Parameters

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99 Alumina ceramic

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99 Alumina Ceramic Performance
99% alumina ceramic materials are often used in chemical and physical grinding environments, especially high purity alumina, which is a very good material used to produce wear-resistant components. These 99% alumina ceramic components include shafts, pistons, bearings and matching end seals, which are mainly used in chemical and physical conditions and are excellent corrosive media. These 99% alumina ceramic components can be used in the manufacture of circulating pumps, reciprocating pump harmony vibrator supported products.

99% alumina properties
99% alumina ceramic has a high melting point, high hardness and high mechanical strength, while the mechanical strength reduced to more than 1000 ° C temperature.Due to the increase of relatively large coefficient of thermal expansion, the thermal shock stability is reduced.

99% alumina ceramic is an electrical insulating material with high resistivity.It also has good chemical stability of alumina, so good corrosion resistance.Alumina is insoluble in water, only slightly soluble in strong acid and alkaline water solutions.

99% of alumina applications
99% alumina ceramic is the most mature engineering ceramics that provides excellent electrical insulation, high hardness and wear resistance but relatively low strength and fracture toughness.
Different types of 99% alumina ceramic are generally white, but sometimes pink (88% alumina) or brown (96% alumina).Color is an impurity from an additive or ingredient.

99% alumina ceramic thermal performance		Strong bending strength 99% alumina ceramic
High compressive strength Bulk density open porosity 20 ° C 1000 ° C 20 ° C 3.83 g/cm3 0% 345 Mpa 145 Mpa 2550 Mpa 239 lbs/ft3 0% 50 ksi 30 ksi 370 ksi		Conductive expansion coefficient 20 ° C 800 ° C 20-1000 ° C 29 W/m°K 7.2 W/m°K 8.4 x 10-6/C° 201 BTU.in/ft2.hr°F 50 BTU.in/ft2.hr°F 4.7 x 10-6/F° Maximum operating temperature ° (no load) 1700 ° C 3092 ° F AP35 99% alumina

99% alumina ceramic Ingredients
99.0% alumina
0.7% silicon oxide
0.07% magnesia
0.07% iron oxide
0.05% sodium oxide
0.03% calcium oxide

99% alumina ceramic Mechanical properties	unit	measurement
Density	gm/cc (lb/ft3)	3.89
Porosity	% (%)	0
colour	—	cream color
Bending strength	MPa (lb/in2x103)	379
Elastic coefficient	GPa (lb/in2x106)	375
Shear modulus	GPa (lb/in2x106)	152
Bulk modulus	GPa (lb/in2x106)	228
Poisson's ratio	—	0.22
Compressive strength	MPa (lb/in2x103)	2600
hardness	Kg/mm2	1440
Fracture toughness	MPa•m1/2	4
Maximum no-load use temperature	°C (°F)	1750
Thermal energy
Thermal conductivity	W/m°K (BTU•in/ft2•hr•°F)	35
Thermal expansion coefficient	10–6/°C (10–6/°F)	8.4
Specific heat	J/Kg•°K (Btu/lb•°F)	880
electric
Dielectric strength	ac-kv/mm (volts/mil)	16.9
Capacitance rate	@ 1 MHz	9.8
Consumption factor	@ 1 kHz	0.0002
Loss factor	@ 1 kHz	—
Volume resistivity	ohm•cm	>1014

Mignrui uses ceramic injection molding and precision grinding to produce a wide range of complex components with precise surface finish and tightness requirements. At the same time, mignrui's manufacturing process can also meet the requirements of small quantities and mass production. These 99% alumina ceramic components are commonly used in environmental engineering, medical food, automotive military, telecommunications, and home appliance applications. If you are interested in our 99% alumina ceramic parts, we would very much welcome you to use high purity 99% alumina ceramic, and the high purity alumina we offer will once again show the extremely high hardness and wear resistance of alumina ceramics.

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

Products and Aplications 99% alumina ceramic
– 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

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