Features of Alumina Boat
- High purity alumina composition exceeding 99.8%
- Exceptional thermal stability up to 1750°C
- Excellent chemical and corrosion resistance
- Available in various shapes and customizable sizes
- Suitable for vacuum and controlled atmosphere use
- Strong resistance to thermal shock and cracking
Alumina Boats for Semiconductor Processing and Thermal Analysis
Made from 99.8%+ pure alumina, these boats provide excellent durability and thermal insulation to 1800°C. Suited for semiconductor diffusion, calcination of powders, and high-temperature material analysis, they ensure reduced sample reactions with low porosity, excellent thermal resistance, and shapes that can be tailored.
Popular Alumina Boat Types
Newthink offers custom Alumina Boat with precise dimensions and high thermal and dielectric performance, supporting applications in power electronics, semiconductor processing, and high-temperature systems.
Used for thermal decomposition and combustion testing at high temperatures.
Offers stable support for sintering or melting operations in tube furnaces.
Made with ≥99.5% Al₂O₃ to reduce contamination in chemical or electronic applications.
Includes a cover to protect samples during heat transfer or controlled-atmosphere sintering.
Key Industrial Applications of Alumina Boat
Newthink supports your precision processes with Alumina Ceramic Boat across critical applications.
Powder CalcinationUsed to hold powders during high-temperature calcination, ensuring minimal contamination due to high purity and chemical inertness.
Material SinteringIdeal for sintering small ceramic or metal parts at up to 1800°C thanks to excellent thermal stability and shape retention.
Wafer Diffusion ProcessesApplied in semiconductor manufacturing to support wafers during high-temperature diffusion treatments without releasing impurities.
Combustion AnalysisDesigned for organic element analysis in combustion furnaces, offering reliable thermal shock resistance and dimensional accuracy.
Metal Melting and AssayServes as a crucible alternative in melting small quantities of gold, silver, or other metals in labs and assay environments.
Thermal Processing in Controlled AtmospheresUsed in vacuum or inert gas furnaces to safely process samples requiring oxygen-sensitive or sealed heat treatment.
Why Choose Newthink Alumina Boat?
Choosing Newthink means choosing stable quality, for we deliver exactly what you need.
Precision forming and post-machining ensure consistent wall thickness and flatness, critical for wafer support or analytical repeatability.
Support is available for customized sizes, lid integration, and complex shapes, helping clients match furnace dimensions or experiment setups.
From prototyping to high-volume manufacturing, both small lab quantities and bulk OEM orders are supported.
Boats are packaged with foam or vacuum-sealed trays, preventing breakage during international air or sea transport.
Alumina Boats Production Workshop
Newthink has 14 years of experience in advanced ceramic production. With multiple production lines and advanced forming equipment, we produce alumina boats in various shapes and thicknesses. Precision grinding and individual inspection ensure performance, while industrial-grade protective packaging guarantees product safety during transport.
Package of Alumina Boats
Each alumina boat is carefully packed in specially tailored protective materials that match its specific shape and size. We use foam inserts, molded trays, and individual compartments to prevent movement and minimize chipping risks during transport. For export shipments, all units are exported in reinforced cartons or wood cases with shock-resistant linings for secure transport over long distances and multiple handling points. Our custom packaging service is specifically designed for fragile ceramics, allowing customers to avoid product damage, reduce loss rates, and ensure a receiving experience without any hassle.
Alumina Boat Specifications
- Properties
- Common Shapes of Alumina Boat
| Property | Value Range | Notes |
| Purity (Al₂O₃ content) | 95% – 99.8% | Higher purity offers better thermal and chemical resistance. |
| Density | 3.7 – 3.92 g/cm³ | Higher density indicates better structural integrity. |
| Flexural Strength | 55 – 60 Kpsi | Indicates resistance to bending under load. |
| Compressive Strength | 300 – 330 Kpsi | Resistance to deformation under compressive load. |
| Hardness | 13.8 – 18 HV (GPa) | Higher values denote better wear resistance. |
| Thermal Conductivity | 25 – 32 W/(m·K) | Facilitates efficient heat transfer. |
| Maximum Operating Temperature | Up to 1800°C | Suitable for high-temperature applications. |
| Thermal Expansion Coefficient | 7.6 – 8.2 ×10⁻⁶ /°C | Lower values reduce thermal stress during temperature changes. |
| Dielectric Strength | 16 – 20 KV/mm | Indicates electrical insulation capability. |
| Volume Resistivity | High resistivity ensures excellent electrical insulation. |
| Shape Type | Description | Common Dimensions (mm) |
| Rectangular | Standard boat shape with flat bottom and straight sides for general-purpose use. | Length: 40–150; Width: 10–50; Height: 7–33 |
| Round Bottom | Curved bottom design to facilitate uniform heat distribution. | Length: 150; Width: 50; Height: 33 |
| With Holes | Features holes to allow gases to escape during high-temperature processes. | Varies based on specific design requirements |
| Customized Shapes | Tailored designs to meet specific application needs, including complex geometries. | As per customer specifications |
Related Products
Porcelain Combustion BoatAn alternative for lower-temperature processes with moderate thermal and chemical resistance.
Alumina Ceramic TrayUsed to carry multiple samples during firing or drying processes, supporting uniform heat distribution.
Rectangle Alumina CrucibleA compact form suitable for small-batch sintering and controlled powder heating.
Alumina CrucibleUsed for melting and holding materials at high temperatures, offering excellent thermal stability and purity.
Alumina boats exhibit moderate resistance to thermal shock. To minimize the risk of cracking, it’s recommended to heat the furnace chamber gradually.
Due to their brittleness, alumina boats should be handled with care. Newthink New Materials recommends checking for micro-cracks before use and avoiding overloading to prevent uneven heating. Proper handling and gradual temperature changes help maintain the integrity of the boats.
While alumina boats are chemically stable, they should be stored in a clean, dry environment to prevent contamination. Avoiding exposure to sudden temperature changes and mechanical shocks during storage will help preserve their structural integrity and prolong service life.
