High Purity Alumina Crucible, Alumina Boat, 99.6% Al2O3 Alumina Ceramic Crucible, Ceramic Boat
High purity alumina crucible and boat can withstand very high temperatures under reducing, inert, or high vacuum conditions. They remain good chemical resistance under high temperatures and have excellent wear and abrasion resistance. Alumina crucible, alumina boat can withstand up to 1800℃.
Our high purity alumina (Al2O3 content > 99%) ceramics are purpose-built to perform across a wide range of high-temperature applications. Our high purity alumina shows considerable resistance to chemical attack due to the lack of glassy phases that tend to determine corrosion resistance.
Features:
● Alumina purity: 99.6%
● Color: Ivory
● Sintering temperature: 1810℃
● Max. working temperature: 1800℃
● Sag Temp. Unsupported Tube: 1600℃
| Chemical Composition (%) | Al2O3 | >99.6 |
| SiO2 | <0.1 | |
| Fe2O3 | <0.05 | |
| R2O | <0.1 |
Standard size and capacity:
Alumina crucible
| Capacity (ml) | Specification (mm) | Capacity (ml) | Specification (mm) |
| 5 | Dia20x25x2 | 250 | Dia65x80x3 |
| 10 | Dia29x33x2.5 | 280 | Dia65x105x3 |
| 20 | Dia34x38x2.5 | 300 | Dia85x60x3 |
| 30 | Dia38x44x2.5 | 320 | Dia70x100x3 |
| 40 | Dia42x45x2.5 | 400 | Dia90x90x4 |
| 50 | Dia45x48x2.5 | 450 | Dia80x115x3.5 |
| 60 | Dia47x47x2.5 | 600 | Dia85x130x3.5 |
| 70 | Dia50x55x2.5 | 750 | Dia91x140x3.5 |
| 80 | Dia50x56x2.5 | 800 | Dia95x135x4 |
| 100 | Dia52x60x2.5 | 900 | Dia95x160x5 |
| 120 | Dia45x120x2.5 | 950 | Dia100x150x4 |
| 130 | Dia57x66x2.5 | 1200 | Dia120x120x5 |
| 150 | Dia50x100x2.5 | 1250 | Dia100x200x5 |
| 170 | Dia50x120x2.5 | 2000 | Dia120x260x5 |
| 2500 | Dia155x150x5mm |
Alumina Boat (semi-circle type or rectangle type )
| Capacity (ml) | Specification (mm) |
| 15 | 70x20x15mm |
| 20 | 65x30x17mm |
| 20 | 100x12x15mm |
| 150 | 120x60x25mm |
| 200 | 100x100x27mm |
Other sizes can be produced according to your requirement.
Note: Alumina products are sensitive to thermal shock. Try to warm up the furnace chamber slowly. A heating rate between 150℃~300℃/hour is recommended for the first 1-1.5hours so that the alumina products can be evenly heated to reduce the impact of thermal shock.
See our High-Temperature Furnace:
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