Negotiable
The date of payment from buyers deliver within days
Beijing
Long-term effective
2020-08-02 23:58
413
jldtc(Mr.)
Beijing
Dongguan Changping Town Jewellery Park Cultural Industrial Park 3A401
Alumina (Al2O3) ceramics is an advanced ceramic materials. In addition, it has the advantages of super hardness, high wear-resisting,good corrosion resistance and electric insulation,resistant acid-base,high intensity,thermostable,high temperature tolerance,good insulation,high strength,precision process,high mechanical strength,good chemical stability.
Different product shapes, sizes, complex shapes and precision products require different molding methods. Generally use <1μm micron Al2O3 powder or diamond paste for grinding and polishing. In order to strengthen the alumina ceramics, the technical method adopted is to coat a layer of silicon compound film on the surface of alumina ceramics by electron beam vacuum coating, sputtering vacuum coating or chemical vapor deposition method, and the temperature is 1200℃~1580℃. Heat treatment to temper the alumina ceramics.
Product parameter table
Item |
Test the condition |
Unit |
99 porcelain |
95 porcelain |
92 porcelain |
75 porcelain |
|
Material |
- |
- | - |
99%Al2O3 |
95%Al2O3 |
92%Al2O3 |
75%Al2O3 |
Physical property |
Density |
Normal atmospheric temperature |
g/cm3 |
4.02 |
3.7 |
3.4-3.7 |
3.2-3.4 |
Water Absorption |
Normal atmospheric temperature |
% |
0 |
0 |
<0.5 |
<1 |
|
Refractoriness |
- |
°C |
1750 |
1650 |
1580 |
1360 |
|
Mechanical performance |
Rockwell hardness |
Normal atmospheric temperature |
Mohs |
12 |
10 |
12 |
10 |
Flexural Strength |
Normal atmospheric temperature |
Mpa |
330 |
300 |
290 |
380 |
|
Compression strength |
Normal atmospheric temperature |
Mpa |
2800-3000 |
2500-2800 |
2500 |
2000 |
|
Hot performance |
Maximum Use Temperature |
- |
°C |
1700 |
1500 |
1500 |
1300 |
Heat resistant shaking |
20O°C-1100O°C |
10Num |
Pass |
Pass |
Pass |
Pass |
|
Thermal Expansion Coefficient |
20O°C-80O°C |
×10-6mm/°C |
6.4-8.2 |
5.5-7.5 |
7.0-7.6 |
7.3 |
|
Heat-conduction rate |
25°C |
W/m.k |
31.4 |
21.8 |
15-20 |
6-7 |
|
W/m.k |
15.9 |
12.6 |
FAQ
Q1: The quality of how?
A: We insist on providing quality products to our customers.
Q2: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. Or it is 15-30 days if the goods are not in stock, it is according to quantity.
Q3: Do you provide samples? Is it free or extra?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q4: What is your terms of payment?
A: Payment<=1000USD, 100% in advance. Payment>=3000USD, 50% T/T in advance, balance before shippment.
Q5: Can I visit you?
A: Sure. If you're a volume buyer and would like to visit our in-house products and production line, please contact us to make an appointment.
http://www.jldceramics.com/