High-purity sintered magnesia (MgO, CAS 1309-48-4) crucibles and setter plates engineered for superalloy vacuum induction melting, beta-alumina/PZT sintering, and molten metal processing up to 2,200 °C.
With a melting point of 2,852 °C and strong thermodynamic stability against basic slags, molten nickel/iron/cobalt superalloys, and volatile lead or alkali oxides, high-purity sintered magnesia (MgO) outperforms alumina and silica in basic high-temperature environments.
Our 99.4%–99.8% MgO crucibles and setter plates are widely used to sinter piezoelectric PZT, PLZT, BaTiO3, and Na-β"-alumina without chemical reaction or lead/sodium leaching, as well as for clean vacuum induction melting of superalloys and uranium/actinide surrogates.
| Property / Metric | Nominal Reference Value (Grade Dependent) |
|---|---|
| Formula & CAS # | MgO (CAS 1309-48-4) |
| Purity | 99.4% – 99.8% MgO (Low SiO2 / Fe2O3) |
| Bulk Density | 3.40 – 3.52 g/cm³ |
| Max Service Temp | 2,000 – 2,200 °C (Moderate ramp 3–5 °C/min) |
| Key Advantage | Inert to basic fluxes, PbO vapor, Li2O, and molten Ni/Fe alloys |
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 crucible capacity or OD × ID × height, dense vs. thermal-shock grade, operating temperature/ramp rate, and quantity.
Include target quantity, destination country/postal code for express air freight calculation, and any special cleanroom bagging or certification requests.
Prepare Magnesia (MgO 99.4%–99.8%) Crucibles, Tubes & Setter Plates RFQ ↗Complementary furnaceware, substrates, PVD consumables, and refractory hardware frequently ordered together.
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TB-AL2O3-CRHigh-purity cylindrical, conical, and rectangular alumina crucibles and matching lids for high-temperature melting, calcination, and gravimetric analysis.
TB-SUB-MGOEpi-ready CMP-polished magnesium oxide (MgO) Single-Crystal substrates (MgO, CAS 1309-48-4) wafers and diced research squares with sub-nanometer surface roughness for PVD, PLD, MBE, and ALD.
TB-PVD-BSTHigh-density hot-pressed barium titanate & barium strontium titanate (BaTiO3 / Ba1-xSrxTiO3 (BST), CAS 12047-27-7) ceramic sputtering targets in 3N5 (99.95%) / 4N purity, indium-bonded for arc-free RF and pulsed-DC thin-film deposition.
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.