Delivery Time:Depends on the quantity, always in a month.
Certification:ROHS

High Pure Aluminum Oxide / Al2O3 / Alumina Ceramic Plunger, Bending Strength ≥ 290MPa

Description:

Wearable ceramic is the special corundum ceramic that been sintered under 1700℃ with the main raw material of Al2O3 and flux of rare metal oxide. Using the high strength organic/inorganic bond to felt together, and then grinding to the size as drawing required.

Performance:

1. Big hardness, the ROHS hardness is HRA80-90, just inferior to diamond, the wearable ability is much better than the wearable steel and stainless steel

2. Wearable ability is excellent. Equal to 266 times of manganese steel, 171.5 times of high chrome cast-iron. Under the same working condition, can extend the equipment working life at least above 10 times.

3. Light weight, the bulk density is 3.6g/cm3, only half of steel, can alleviate the equipment burthen greatly.

4. Hard adhesives, good heat-resistant.

Main Technical parameters:

Alumina content≥95%

Bulk Density≥3.6 g/cm3

ROHS Hardness HRA≥85

Compressive Strength≥850 Mpa

Fracture Toughness KΙC ≥4.8MPa•m1/2

Bending strength≥290MPa

Coefficient of thermal conductivity: 16W/m.K

Coefficient of thermal expansion:7.2×10-6m/m.K

Applications:

The enterprises of Electricity,steel,smelt,mechanism,colliery,mine,chemical,cement,oil field ,will choose the different products according to their special requirements for the wearable mechanical instruments that works in the system of coal transfer, material transfer, milling, dust removing, and so on.
 

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