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Other Resources: Master Reference | Zirconia Crucibles
Alumina crucibles
PDF: English
Alumina Crucibles Engineered for Broad Applications, Tighter Budgets, Repeatable Performance and a Service Limit of 1700° C in Vacuum or Oxidizing Atmospheres
- Many Sizes to Choose From
- Numerous Bottom Configurations
- Responsive Order Processing
- Short Lead Times
- Extended Life
Zircoa’s performance engineered, hydraulically pressed, Composition 6105 delivers alumina crucibles with a uniform surface as well as precise, consistent, dimensional control from one order to the next. As a leader in the design, engineering and manufacturing of crucibles, you can depend upon Zircoa for expertise in the forming method appropriate to your application.
For immediate delivery, we inventory the most common crucible sizes, with configurations to suit your particular needs. Ideal for induction melting of superalloy metals, in vacuum or oxidizing atmospheres. Markets served include: Aerospace, Crystal Growing, Dental, Mining, Pharmaceutical, Power Generation, Medical, Precious Metals and the processing of Zircon and Zirconia.
For Even Longer Crucible Life
Zirconium Oxide (ZrO2, A Grain Zirconia) is one of the best commercially available insulating materials. It has approximately 5 times the insulating value of alumina or magnesia. Using 1859 or 3001 Crucible Backup will extend crucible life and result in cleaner melts(www.zircoa.com/grog).
Specifications
Physical Properties of Alumina and Zirconia Compositions
| Composition 6105 |
Backup Sizing | ||
|---|---|---|---|
| 1859 | 3001 | ||
|
Density |
-8+100 Tyler mesh Size |
-8+28 Tyler mesh Size |
|
| g/cm3 | 2.8 | ||
| lbs/ft3 | 174.8 | ||
| Porosity (%) | 18 | ||
| Modulus of Rupture @ 70° (21°C) |
|||
| psi | 2800 | ||
| Mpa | 19.3 | ||
| Thermal Expansion | |||
| CTE R.T. to 600°C | 7.0 x 10-6 in/in/°C | ||
| CTE R.T. to 1000°C | 8.2 x 10-6 in/in/°C | ||
| CTE R.T. to 1300°C | 8.8 x 10-6 in/in/°C | ||
Refractory Backup (Thermal Insulation)
Extend the life of your furnace, and maintain tighter control over your furnace temperatures with Zircoa’s pre-sintered grog refractory backup (www.zircoa.com/grog).
- Zircoa Backup 1859 — Partially stabilized with magnesia and calcia. Available in -8+100 Tyler mesh size.
- Zircoa Backup 3001 — Partially stabilized with magnesia. Available in -8+28 Tyler mesh size.