High-stiffness solid sintered alumina rods and centerless-ground shafts for kiln supports, vacuum fixtures, metrological guides, and electrical standoffs.
Solid high-purity alumina rods combine extreme compressive strength (>2,200 MPa), high elastic modulus (370 GPa), electrical insulation, and dimensional stability in vacuum and high-temperature oxidizing atmospheres. Extruded or cold-isostatically pressed stock can be supplied as-sintered for furnace rack supports or diamond centerless-ground to tight h6/g6 tolerances for wear pins, plungers, and precision linear alignment.
Ends can be diamond-cut square, chamfered, stepped, or slotted to customer CAD drawings.
| Property / Metric | Nominal Reference Value (Grade Dependent) |
|---|---|
| Compressive Strength | 2,200–2,600 MPa |
| Elastic Modulus | 360–380 GPa |
| Ground OD Tolerance | Down to ±0.005–0.02 mm (Ra 0.2–0.8 µm) |
| Max Working Temp | 1,700–1,750 °C |
| Outgassing | UHV compatible (zero organic binders after firing) |
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.
Specify rod diameter and tolerance (as-fired ±2% vs. precision ground), cut length, cross-section (round, square, hex), chamfer/step machining drawing, alumina purity, and operating temperature/load.
Include target quantity, destination country/postal code for express air freight calculation, and any special cleanroom bagging or certification requests.
Prepare Alumina Ceramic Rods RFQ ↗Complementary furnaceware, substrates, PVD consumables, and refractory hardware frequently ordered together.
TB-AL2O3-TUImpervious high-purity sintered alumina furnace and process tubes for tube furnaces, CVD/annealing, and high-temperature thermal systems.
TB-AL2O3-PLThin tape-cast electronic substrates (96% / 99.6%) and thick precision-ground alumina setter and wear plates with optional laser cutting or CNC machining.
TB-CER-INSCustom-machined electrical, RF, vacuum, and thermal ceramic bushings, flanged washers, standoffs, and heater bobbins built to your engineering drawing.
TB-MGC-STKZero-porosity fluorphlogopite mica glass-ceramic rods, plates, and finished CNC parts that machine with standard metalworking tools with zero post-firing shrinkage.
Submit your purity grade, geometry, quantity, and documentation requirements. Every order includes the producing mill's batch Certificate of Analysis (COA) and pre-shipment dimensional verification.