| Customization: | Available |
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| Application: | Refractory |
| Material: | Alumina |
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| Product Name | Alumina ceramic ring |
| Material | 99%/95% Alumina |
| Size | Custom size |
| Forming Method | Slip Casting |
| Payment | T/T |
| Transport | Air Transportation;Sea Transportation |
| Delivery Time | Stock Products:3-7 days after receiving payment. Production Products:35-45 days after receiving payment. |
| OD | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 110 | 120 |
| ID | 25 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 110 |
| Lenght | 95AL/99AL/995AL ≤3000mm |
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| Material | Alumina | Zirconia | Recrystallization Silicon carbide |
Silicon Nitride bonded Silicon Carbide |
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| Properties | Units | AL997 | AL995 | AL99 | AL95 | Zro2 | RSiC | NSiC |
| %Alumina | -- | 99.70% | 99.50% | 99.00% | 95% | -- | -- | -- |
| Color | -- | lvory | lvory | lvory | lvory&White | lvory White | black | gray |
| Permeability | -- | Gas-tight | Gas-tight | Gas-tight | Gas-tight | Gas-tight | -- | -- |
| Density | g/cm³ | 3.94 | 3.9 | 3.8 | 3.75 | 5.89 | 2.7 | 2.8 |
| Straightness | -- | 1‰ | 1‰ | 1‰ | 1‰ | 1‰ | 1‰ | 1‰ |
| Hardness | Mohs Scale | 9 | 9 | 9 | 8.8 | 8.5 | 9.5 | 9 |
| Water Absorption | -- | ≤0.2 | ≤0.2 | ≤0.2 | ≤0.2 | 0 | 0 | 0 |
| Flexural Strength (Typical 20ºC) |
Mpa | 375 | 370 | 340 | 304 | 1200 | 90 | 180 |
| Compressive Strength (Typical 20ºC) |
Mpa | 2300 | 2300 | 2210 | 1910 | 5700 | 600 | 650 |
| Coefficient of Thermal Expansion (25ºC to 800ºC) |
10-6/ºC | 7.6 | 7.6 | 7.6 | 7.6 | 10 | 4.7 | 5 |
| Dielectric Strength (5mm Thickness) |
AC-kv/mm | 10 | 10 | 10 | 10 | -- | -- | -- |
| Dielectric Loss 25ºC@1MHz |
-- | <0.0001 | <0.0001 | 0.0006 | 0.0004 | 0.001 | -- | -- |
| Dielectric Constant |
25ºC@1MHz | 9.8 | 9.7 | 9.5 | 9.2 | 29 | -- | -- |
| Volume Resistivity (20ºC) (300ºC) |
Ω·cm³ | >1014 2*1012 |
>1014 2*1012 |
>1014 4*1011 |
>1014 2*1011 |
>1013 5*108 |
-- | -- |
| Long-term operating temperature |
ºC | 1700 | 1650 | 1600 | 1400 | 2200 | 1650 | 1450 |
| Thermal Conductivity (25ºC) |
W/m·K | 35 | 35 | 34 | 20 | 3 | 23 | 15 |
Q1:Is it available to produce customized products?
A:We support custom-made alumina ceramic tubes as per different dimensions,designs, surface treatment
Q2.When can I get the price after sending the inquiry?
A:We regularly quote within 24 hours after we get your inquiry.lf you are in urgent need of getting the price, Please call us or tell us in your email so that we will proceed with your inquiry as a priority.
Q3.How long does the whole procedure being worked out?
A:After you place an order, the manufacturing time is about 25 working days.
Q4.How to ensure quality in your factory?
A:The strict quality-control will be done in the production line,including IQC,IPQC,QA,OQC, Also both CKP, AQL are regularly used in production.
Q5. Are you a factory or trading company?
A:We are a professional manufacturer. You are welcome to visit our factory and cooperate with us.
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