Last Updated on June 16, 2021 by You Ling
What’s this?
Alumina ceramic, (Al₂O₃). In He-Shuai company, we mainly offer the advanced customized service to our clients. Alumina ceramic belongs a kinds of industry ceramic. Alumina is its mainly material. And its feature is high hardness, long wearing, only can be formed by diamond grinding. It has huge range industrial applications. And the shape have tube, ring, disc, rod, plate … other special shapes.
Custom Industrial Ceramic part is getting more and more popular in the world. We have very good production technology to improve the quality. And offering the alumina ceramic in various shapes and dimensions and made to tight tolerance. It is your exceptional products with affordable price.
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How many models you have?
We have hundreds of normal standard models for your reference. Some of alumina cermaic have enough stocks.but some of others haven’t. So, Contact us today if you need special size .welcome to custom made product from He-Shuai Ltd.
- Alumina Ceramic: Common Shapes and Sizes
- Alumina Ceramic Thermocouple-protection Tube Closed One End
- Alumina Ceramic Thermocouple-protection Tube Closed One End
Material and Features:
| 95%series | 99%series | 99.5%series | |||||||||
| A l2O3 ( % ) | ≥95 | ≥99 | ≥99.5 | ||||||||
| SiO 2 (%) | ＜0.3 | ＜0.2 | ＜0.04 | ||||||||
| Fe2O3 (%) | ＜0.1 | ＜0.1 | ＜0.05 | ||||||||
| Alkaline substances (%) Density (g/cm3 ) | ＜0.1
3.7 |
＜0.1
3.87 |
＜0.08
3.89 |
||||||||
| Hardness (M0hs) | 8.8 | 9 | 9 | ||||||||
| Expansion coefficient (10-6 K-1 ) | 8.5 | 8.1 | 7.6 | ||||||||
| Operating temperature in short time ( ℃ ） | 1650 | 1800 | 1850 | ||||||||
| Operating temperature in long time ( ℃ ) | 1530 | 1650 | 1700 | ||||||||
| Color | pink ,white | white,ivory | ivory | ||||||||
| Standard dimension(mm) | |||||||||||
| Outer diameter | 6 | 8 | 10 | 12 | 16 | ||||||
| Length | 1000 | 1500 | 2000 | 2000 | 2500 | ||||||
| Outer diameter | 20 | 25 | 30-35 | 40-45 | 50-55 | ||||||
| Length | 2500 | 2500 | 2000 | 2000 | 2000 | ||||||
| Outer diameter | 60-65 | 70-75 | 80-85 | 90-95 | 100 | ||||||
| Length | 2000 | 2000 | 2000 | 2000 | 1700 | ||||||
- Furnace Tube
Material and Features:
| 80series | 95series | 97series | 99series | 995series | |||||||||||||||
| Manufacturing Process: | extrusion processing | slip casting | slip casting | slip casting | slip casting | ||||||||||||||
| Service Temp. (℃) | 1350 | 1530 | 1600 | 1650 | 1700 | ||||||||||||||
| A l2O3 ( % ) | ≥80 | ≥95 | ≥97 | ≥99 | ≥99.5 | ||||||||||||||
| Rate of water absorption (%) | ≤8.5 | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ||||||||||||||
| Anti-bending strength (Mpa) | ≥55 | ≥275 | ≥285 | ≥300 | ≥350 | ||||||||||||||
| Thermal shock resistance | Excellent | Excellent | Excellent | Excellent | Excellent | ||||||||||||||
| Max. service Temp. (℃) | 1420 | 1750 | 1800 | 1850 | 1900 | ||||||||||||||
| standard sizes (mm) | |||||||||||||||||||
| 80series | 95series | 97series | 99series | 995series | |||||||||||||||
| Outer diameter | 40-150 | 40-150 | 40-200 | 40-150 | 40-150 | ||||||||||||||
| Wall thickness | 5-15 | 4-7 | 4-20 | 4-7 | 4-7 | ||||||||||||||
| Length | 5500 | 2000 | 2000 | 2000 | 2000 | ||||||||||||||
Attention
- In order not to affect the service life of the furnace tube, recommended maximum heating rate and cooling rate are from 10 to 20 ℃ /
- In consideration of the heat-expansion and cold-contraction principle, Please try to avoid the furnace tube touching the high temperature or cool object
- Furnace tube will appear tiny cracks after a period of time, which is normal phenomenon while the cracks will not affect the use, and can be repaired with aluminum oxide
- Recommended not pass into corrosive If you want to pass into highly corrosive substances such as S, Na, etc., special treatment is needed on the furnace tube.
- High temperature solution can not be leaked into the furnace tube, While base plate and alumina powder can isolate the furnace
- Alumina Ceramic Tube (Isostatic Processing)
Material and Features:
| 95%series | 99%series | 99.5%series | ||||
| A l2O3 ( % ) | ≥95 | ≥99 | ≥99.5 | |||
| SiO 2 (%) | ＜0.3 | ＜0.2 | ＜0.04 | |||
| Fe2O3 (%) | ＜0.1 | ＜0.1 | ＜0.05 | |||
| Alkaline substances (%) Density (g/cm3 ) | ＜0.1
3.7 |
＜0.1
3.87 |
＜0.08
3.89 |
|||
| Hardness (M0hs) | 8.8 | 9 | 9 | |||
| Expansion coefficient (10-6 K-1 ) | 8.5 | 8.1 | 7.6 | |||
| Operating temperature in short time ( ℃ ） | 1650 | 1800 | 1850 | |||
| Operating temperature in long time ( ℃ ) | 1530 | 1650 | 1700 | |||
| Color | pink ,white | white,ivory | ivory | |||
Alumina ceramic tubes (Isostatic Processing)can be supplied in longer lengths (up to 1250mm long) . We can also custom cut shorter lengths to your specifications. The tube’s outer diameter range from 10mm – 800mm.
4.4 High Temperature Ceramic Roller
Material and Features:
| LC-A | LC-B | LC-C | LC-D | ||
| Max. service Temp. (℃) | 1220 | 1280 | 1350 | 1450 | |
| A l2O3 ( % ) | ≥70 | ≥75 | ≥80 | ≥85 | |
| Rate of water absorption (%) | ≤11 | ≤9 | ≤8.5 | ≤7.5 | |
| Anti-bending strength (Mpa) | ≥40 | ≥45 | ≥51 | ≥58 | |
| Thermal shock resistance | Excellent | Excellent | Excellent | Excellent | |
| Refractory degree (℃) | ≥1700 | ≥1750 | ≥1800 | ≥1860 | |
| standard sizes (mm) | |||||
| Outer diameter 20 | 25 | 27 | 30 | 33.7 | |
| Length 2800 | 2800 | 3100 | 3300 | 3500 | |
| Outer diameter 35 | 40 | 42 | 45 | 48 | |
| Length 3600 | 3600 | 3600 | 4200 | 4200 | |
| Outer diameter 50 | 52 | 55 | 60 | 65 | |
| Length 4400 | 4500 | 4700 | 4800 | 4800 |
The tubes of the above sizes , we have available stocks. We can also custom cut shorter lengths to your specifications. Other sizes available on request.
4.5 Alumina ceramic rod
Material and Features:
| 95%series | 99%series | 99.5%series | ||||
| A l2O3 ( % ) | ≥95 | ≥99 | ≥99.5 | |||
| SiO 2 (%) | ＜0.3 | ＜0.2 | ＜0.04 | |||
| Fe2O3 (%) | ＜0.1 | ＜0.1 | ＜0.05 | |||
| Alkaline substances (%) Density (g/cm3 ) | ＜0.1
3.7 |
＜0.1
3.87 |
＜0.08
3.89 |
|||
| Hardness (M0hs) | 8.8 | 9 | 9 | |||
| Expansion coefficient (10-6 K-1 ) | 8.5 | 8.1 | 7.6 | |||
| Operating temperature in short time ( ℃ ） | 1650 | 1800 | 1850 | |||
| Operating temperature in long time ( ℃ ) | 1530 | 1650 | 1700 | |||
| Color | pink ,white | white,ivory | ivory | |||
standard dimension
Alumina ceramic rods can be supplied in longer lengths ( up to 2500 mm long). We can also custom cut shorter lengths to your specifications.The sizes of the tube’s outer diameter range from 0.8mm – 200mm. Custom Produc: Triangular rod, square rod, Other Styles.
