Factory-Direct Slip-Cast Alumina Labware & OEM Components
High-Purity Alumina Ceramics (99.1% - 99.9%)
Stop paying US distributor markups. We manufacture heavy-duty, slip-cast alumina components engineered for extreme thermal durability and zero contamination. While our capabilities scale up to ultra-pure 99.9% for specialized R&D, we highly recommend our 99.1%-99.4% industrial-grade series as the ultimate cost-to-performance standard for powder metallurgy and solid-state battery calcination. Need a non-standard shape? We offer direct-to-factory custom manufacturing from your CAD/PDF drawings with No Minimum Order Quantity (No MOQ).
Factory-Direct Value
The OEM Advantage: Built for Industrial Scaling
Before browsing our standard catalog, here is how our manufacturing infrastructure protects your material yield and slashes procurement budgets:
Zero-Porosity Slip-Casting
We reject the mass-production shortcuts of dry-pressing. Our factory relies entirely on traditional slip-casting to achieve a fully densified structure with 0% water absorption. This guarantees extreme thermal durability and absolutely zero particle shedding (no slagging) to protect your high-purity melts.
CAD/PDF Customization (No MOQ)
We go far beyond standard lab catalogs. Send us your CAD or PDF drawings, and our engineers will manufacture highly complex, non-standard geometries (including custom slotting and drilling) directly to your specs. We fully support your R&D prototyping with No Minimum Order Quantity (1-piece customization).
Factory-Direct Pricing Disruption
Stop paying 300% distributor markups to standard lab suppliers. By manufacturing and shipping directly from our facility, we deliver premium metallurgical carriers at a fraction of the cost. Compare our real-world factory pricing below:
| Crucible Shape | Volume Class | Typical US Distributor | Our Factory-Direct Price | Your Savings |
| Cylindrical | ~10-15 mL | ~$12.95 / pc | $2.50 / pc | -80% |
| Cylindrical | ~175 mL | ~$28.95 / pc | $8.00 / pc | -72% |
| Rectangular (Saggar) | ~13 mL | ~$16.95 / pc | $2.50 / pc | -85% |
(Note: The prices above reflect our online Lab Sample Packs. For bulk wholesale orders over 100 pcs, unit costs are driven down even further).
Our Alumina Ceramic Product Portfolio
Bypass distributor markups. We manufacture ultra-dense, slip-cast alumina solutions for rigorous lab research and heavy industrial scaling.
Alumina Cylindrical Crucibles
Slip-cast for 0% water absorption and zero particle shedding. The ultimate contamination-free carrier for lab sintering and high-purity melts up to 1750°C.
Alumina Curved Crucibles
Engineered with a smooth arc profile to distribute thermal stress and eliminate dead zones. Ensures 100% material recovery and seamless pouring for reactive fluids.
Alumina Rectangular & Square Crucibles (Saggars)
Built for industrial powder metallurgy and battery materials. Features heavy-duty wall thicknesses (up to 25mm) for stable, high-volume stacked firing without structural collapse.
Alumina Ceramic Plates
Heavy-duty substrates reaching up to 99.98% purity for trace-sensitive battery research. Available as-fired or CNC-machined for extreme electrical insulation and thermal stability.
Alumina Ceramic Sputtering Targets
Fully densified, slip-cast targets delivering superior surface flatness and zero porosity for physical vapor deposition (PVD) and advanced thin-film manufacturing.
Alumina Grinding Tools (Jars & Mortars)
Delivering extreme wear resistance (10x that of standard steel) for contamination-free material reduction. Includes heavy-duty planetary mill jars and mortar sets.
Key Properties
Industrial-Grade Material Performance
1750°C Thermal Stability
Slip-cast to maximize structural integrity under severe thermal stress. Engineered for continuous, long-term operation at 1700°C, with verified peak endurance up to 1750°C without phase degradation.
Zero Contamination & 0% Absorption
Eliminate cross-contamination in reactive melts. Our heavy-duty densification achieves a true 0% water absorption rate and a strict no-slagging guarantee, ensuring zero particle shedding into your high-purity samples.
10x Wear & Lead Corrosion Defense
Built to survive harsh chemical processing. Delivers 10 times the wear resistance of standard steel, alongside superior defense against boiling acids, alkalis, and aggressive heavy metal (Lead/Pb) corrosion.
Carbon-Free Vacuum Stability
Formulated strictly without carbon binders to guarantee zero carbon precipitation at extreme heat. The zero-porosity structure acts as a flawless electrical insulator and resists volatilization in high-temperature vacuum furnaces.
Purity Selection Guide
Factory Purity Grades: ROI-Focused Selection
- Best for: High-volume industrial calcination, solid-state battery material synthesis, and heavy-duty powder metallurgy.
- Advantage:The ultimate industrial standard. Delivers 100% of the extreme thermal stability (1700°C) and robust chemical resistance required for rigorous scaling, at the absolute lowest factory-direct cost.
- Typical Use: Heavy-duty saggars, standard slip-cast crucibles, and high-capacity calcination boats.
- Best for: Highly reactive alloy melting and specialized environments requiring strictly controlled trace impurities.
- Advantage: Significantly reduced silica and iron content. Offers enhanced mechanical strength and lower contamination risk for sensitive analytical testing at elevated temperatures.
- Typical Use: Upgraded analytical crucibles, specific lithium battery components, and custom-machined flux labware.
- Best for: Aerospace-grade components, semiconductor processing, and zero-tolerance crystal growth.
- Advantage: The absolute ceiling of alumina manufacturing. Offers near-zero trace elements, but involves extremely complex production, significantly higher costs (up to 6x the cost of our standard grade), and longer lead times.
- Typical Use: Highly specialized semiconductor vessels, ultra-pure plate substrates, and zero-contamination custom parts.
Selection Tip: Unless your process has extreme ppm-level trace element restrictions, our 99.1%-99.4% series is the most reliable, cost-effective choice for both R&D and mass production.
Proven Industrial Applications
Engineered for Extreme Scaling
Stop risking batch contamination. Our slip-cast alumina is trusted across high-stakes industries—from advanced battery material calcination to photovoltaic glass manufacturing. We deliver zero-slagging reliability and proven 30-40 reuse cycles for heavy-duty industrial production.
Advanced R&D & Laboratories
Powder Metallurgy & Battery Sintering
Semiconductor Processing
Photovoltaic & Special Glass
Petrochemical & Lead Smelting
Aerospace & Reactive Alloys
Factory-Direct OEM Prototyping
Custom Alumina Components (No MOQ)
Bypass massive US distributor markups. We manufacture non-standard geometries and highly complex OEM components directly from your CAD/PDF drawings at true factory-direct prices.
Submit your specifications. Our engineering team processes everything from industrial saggars to specialized analytical labware, ensuring precise dimensions and zero-porosity performance.
- Complex CAD/PDF Customization: We go far beyond standard shapes. We offer precision deep processing, including custom side-slotting for gas ventilation and specialized routing for thermocouples.
- Zero-Porosity Slip-Casting: We leverage traditional slip-casting to achieve a fully densified structure with 0% water absorption. This ensures extreme thermal shock resistance and zero particle shedding (slagging) into your melts.
- Disruptive OEM Pricing: Skip the middleman entirely. We provide highly aggressive factory pricing for both 1-piece R&D prototyping and large-scale industrial batch orders.
Have a CAD/PDF Drawing?
Send us your specs for a free engineering review and a fast factory-direct quote. We support your R&D scaling with absolutely No Minimum Order Quantity (1-piece prototyping).
Our Custom Manufacturing Capabilities
Technical Data Sheet
Technical Specifications: 99% Alumina Ceramics (99.1%-99.4% Grade)
Detailed property data for our standard high-performance industrial grade alumina.
| Property | Value | Unit |
|---|---|---|
| Al₂O₃ Content | 99.1 - 99.4 | % |
| Density | 3.9 | g/cm³ |
| Flexural Strength | 292 | MPa |
| Compressive Strength | 3300 | MPa |
| Elastic Modulus | 340 | GPa |
| Impact Strength | 3.9 | MPa·m¹/² |
| Weibull Modulus | 10 | m |
| Vickers Hardness | 1800 | HV0.5 |
| Thermal Expansion | 5.0 - 8.3 | x10⁻⁶/K |
| Thermal Conductivity | 31 | W/m·K |
| Thermal Shock Resistance | 250 | ΔT °C |
| Max. Operating Temp. | 1700 | °C |
| Volume Resistivity (at 20°C) | ≥10¹⁴ | Ω·cm |
| Dielectric Strength | 20 | KV/mm |
| Apparent Porosity | 0 | % |
| Dielectric Constant (1MHz) | 10 | εr |
| Dielectric Loss (1MHz) | 0.001 | tanδ |
| Insulation Breakdown | 20 | KV/mm |
Featured Custom CNC Case Study
See how we bypassed distributor markups to machine a custom Ø21mm in-situ sample carrier for an advanced battery lab.