TB-AL2O3-BTAlumina Combustion Boats
High-purity open and lidded alumina sample boats sized to slide cleanly inside laboratory quartz and ceramic tube furnaces.
Purity / Grade99.5% / 99.8% Al2O3
Typical SizeLengths 30–250 mm × Widths 8–60 mm
Technical Ceramics · TB-AL2O3-CR
Alumina Crucibles & Lids
High-purity cylindrical, conical, and rectangular alumina crucibles and matching lids for high-temperature melting, calcination, and gravimetric analysis.
Alternate & search designations: Corundum melting crucible, sintered Al2O3 TGA/DSC pan, high-form ceramic crucible, cylindrical calcination sagger
Purity / Grade Options99.5% / 99.8% Al2O3
Standard Dimensions2 mL to 2,000 mL capacities
Available ConfigurationsCylindrical, conical (high/low form), rectangular trays, matching lids
Ordering & MOQSpecification-based quote · Prototype & production lots
Material & Engineering Overview
Dense 99.5% and 99.8% sintered alumina crucibles resist chemical attack from metal oxides, molten salts, glass melts, and high-purity alloys at temperatures up to 1,750 °C. Available from micro-analytical 2–5 mL vessels up to 2,000 mL production saggers, high-purity corundum bodies prevent silica contamination in battery cathode synthesis, phosphor firing, and rare-earth metallurgy.
Crucibles and flat or recessed lids can be ordered together or separately, individually foam-packed for export air transit, and backed by manufacturer batch chemical and physical COA documentation.
Standard Shipment Documentation: Manufacturer Lot COA (chemical composition & bulk density) and solid-article safety sheet.
Primary Research & Industrial Applications
- Battery cathode/solid-state electrolyte precursor calcination (NMC, LLZO)
- Precious metal, superalloy, and specialty glass laboratory melting
- Thermogravimetric ashing, flux fusion, and loss-on-ignition (LOI) testing
- Crystal growth and optical oxide synthesis
Nominal Material Reference Properties
| Property / Metric | Nominal Reference Value (Grade Dependent) |
|---|---|
| Max Service Temperature | 1,700–1,750 °C |
| Al2O3 Purity | ≥99.5% or ≥99.8% (Fe2O3 < 0.05%) |
| Apparent Porosity | <0.2% (dense gas-tight grade) |
| Bulk Density | 3.85–3.92 g/cm³ |
| Recommended Ramp Rate | ≤3–5 °C/min above 800 °C |
Reference values reflect typical sintered, fused, or wrought grades. Exact batch test figures are confirmed on your written quotation and accompanying lot Certificate of Analysis.
What to Specify in Your Quote Request
Specify nominal volume (mL) or top OD × bottom OD × height × wall thickness, shape (cylindrical straight-wall, conical, arc, or rectangular sagger), alumina purity, whether matching lids are required, and chemical charge compatibility.
Include target quantity, destination country/postal code for express air freight calculation, and any special cleanroom bagging or certification requests.
Prepare Alumina Crucibles & Lids RFQ ↗Technical & Procurement FAQ
Are matching alumina crucible lids included automatically?
Lids can be quoted either bundled 1:1 with crucibles or as separate line items (often researchers order 20–30% spare lids). Specify flat disc lid or recessed/lipped lid in your RFQ.
When should I choose zirconia or boron nitride instead of alumina crucibles?
Choose YSZ zirconia above 1,750 °C or for aggressive alkaline/Li-rich melts, and choose hexagonal boron nitride (h-BN) when non-wetting release of molten metals, silicon, halides, or III-V compounds in inert/vacuum atmospheres is required.
Can alumina crucibles be used with LiOH or strong molten alkalis?
Strongly basic lithium salts (LiOH/Li2CO3) react with Al2O3 at elevated temperatures to form lithium aluminate; for heavy lithiation above 800 °C, high-purity MgO or YSZ zirconia saggers/crucibles are often preferred.
Cross-referenced catalog
Related technical materials.
Complementary furnaceware, substrates, PVD consumables, and refractory hardware frequently ordered together.
TB-AL2O3-BT
TB-ZRO2-CRYttria-Stabilized Zirconia (YSZ) Ceramics
Transformation-toughened 3Y-TZP structural zirconia parts and ultra-refractory YSZ/Mg-PSZ crucibles, setter plates, and tubes rated up to 2,100 °C.
Purity / Grade3Y-TZP (94.7% ZrO2) & 8Y-FSZ Refractory Grades
Typical SizeCrucibles 5–1,000 mL, tubes, setter plates, CNC rings
TB-HBN-MCHexagonal Boron Nitride (h-BN) Ceramics
Hot-pressed hexagonal boron nitride (h-BN) crucibles, rods, plates, and precision CNC components combining extreme thermal shock resistance, molten-metal non-wetting, and electrical insulation.
Purity / Grade99% Pure BN / Binderless PBN /BN-ZrO2-SiC Composites
Typical SizeCrucibles, rods Ø 6–150 mm, plates, & CNC parts
TB-SIO2-CRClear Fused Quartz Crucibles & Evaporating Dishes
Flame-polished 99.99% clear fused quartz crucibles, lids, and evaporating dishes for ultra-trace acid digestion, phosphor firing, and thermal shock cycling.
Purity / Grade≥99.99% SiO2 Clear Fused Quartz
Typical Size10 mL to 1,000 mL crucibles, beakers, & flat dishes