High Temperature Fine Surface Industrial 99% Al2o3 Aluminum Oxide Ceramic Nozzles

 

High Temperature Fine Surface Industrial 99% AL2O3 Aluminum Oxide Ceramic Nozzles

 

Description:

 

Alumina balls,nozzles,substrates have the performances of high purity,good hermetical property,good hardness,low abrade,anti-corrode,high grinding efficiency,no pollution.

Widely implicated in the areas of ceramic,electric power,petroleum,chemical industry and light industry, they are the liner and grinding medium for various ceramic material, α-Al2O3 powder, flake alumina, kaolin, fusible corundum,porcelain enamel,dye,ceramic glaze,dope,printing ink,special glass,various ball mill machines.

 

1.This type of ceramic products is green and environment-friendly. It has no environment-harmful materials.

2. Material: 99% AL2O3

3. Method of molding: Thermal casting / dry press / extrusion

4. Color:yellow

5. Sintering temperature: 1750℃

6. Surface finish: Ra0.4&simRa0.8&mum

7. Packing: Pack with carton and ship with wooden case

8. Produce products according to molds or drawings provided by the client and quote according the data of the products

9. The mould fee of the non-standard products: According the quotation of product.

 

Applications:

Our products are widely implicated in the areas of ceramic,electric power,petroleum,chemical industry and light industry 

 

Specifications:

95%,99%,99.7% Al2O3 Material Parameters:

Item	Test Condition	Unit Symbol	95%Alumina  ceramics	99%Alumina  ceramics	99.7%Alumina  ceramics
The main chemical  ingredient			Al2O3	Al2O3	Al2O3
Bulk Density		g/cm3	3.6	3.89	3.96
Maximum Use  Temperature			1450℃	1600℃	1650℃
Water absorption		%	0	0	0
ROHS Hardness			≥85	≥89	≥89
Flexural strength	20° C	MPa (psi x 103)	358 (52)	550	550
Compressive Strength	20° C	MPa (psi x 103)	2068 (300)	2600(377)	2600(377)
Fracture Toughness	K(I c)	Mpa m1/2	4-5	5.6	6
Coefficient of  thermal expansion	25-1000° C	1X 10-6/°C	7.6	7.9	8.2
Coefficient of  thermal conductivity	20° C	W/m °K	16	30.0	30.4
Thermal Shock  Resistance	Tc	°C	250	200	200
Dielectricity constant	1MHz.25℃		9	9.7	9.7
Dielectric strength		ac-kV/mm (ac V/mil)	8.3 (210)	8.7 (220)	8.7 (220)
Volume Resistivity	100℃	ohm-cm	> 1013	> 1014	> 1014