High-purity 3N5 (99.95%) / 4N (99.99%) CIP-Sintered, Forged, or Spun High-Purity tungsten (w) crucibles & sapphire growth vessels (W, CAS 7440-33-7) engineered for ultra-high-temperature vacuum furnaces, crystal growth, semiconductor processing, and corrosive environments.
Consolidated by powder metallurgy, vacuum arc remelting (VAR), or electron-beam melting and stress-relieved for high-temperature dimensional stability, our High-Purity tungsten (w) crucibles & sapphire growth vessels (W, CAS 7440-33-7) products deliver reliable performance in vacuum, inert-gas, and reducing furnace atmospheres.
With the highest melting point of any pure metal (3,422 °C) and low vapor pressure, high-density tungsten crucibles are essential for sapphire crystal growth, rare-earth metal melting, and ultra-high-temperature vacuum sintering. Every shipment includes the producing mill's chemical purity Certificate of Analysis (reporting metallic and interstitial O, N, C, H trace levels in ppm) and pre-shipment dimensional verification.
| Property / Metric | Nominal Reference Value (Grade Dependent) |
|---|---|
| Composition & CAS # | W (CAS 7440-33-7) |
| Purity / Alloy Grade | 3N5 (99.95%) / 4N (99.99%) CIP-Sintered, Forged, or Spun |
| Density | 18.2–19.2 g/cm³ |
| Melting Point | 3,422 °C |
| Available Mill & Machined Forms | OD 10–400 mm × Wall 1.5–15 mm (Sintered-machined, forged, or seamless spun) |
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 W purity or alloy grade (3N5 (99.95%) / 4N (99.99%) CIP-Sintered, Forged, or Spun), form and dimensions (OD 10–400 mm × Wall 1.5–15 mm (Sintered-machined, forged, or seamless spun)), surface finish (rolled, ground, electropolished, or chemically cleaned), and quantity.
Include target quantity, destination country/postal code for express air freight calculation, and any special cleanroom bagging or certification requests.
Prepare High-Purity Tungsten (W) Crucibles & Sapphire Growth Vessels RFQ ↗Complementary furnaceware, substrates, PVD consumables, and refractory hardware frequently ordered together.
TB-W-CMPUltra-high-melting-point (3,422 °C) 99.95%+ pure tungsten crucibles, centerless-ground rods, rolled sheets, wire, and hot-zone elements for extreme vacuum thermal systems.
TB-MO-CRUHigh-purity 99.95% Pure Mo & Lanthanated ODS Mo-La (0.3–0.7 wt% La2O3) molybdenum & Mo-La (ODS) crucibles, sintering boats & trays (Mo / Mo-La2O3, CAS 7439-98-7) engineered for ultra-high-temperature vacuum furnaces, crystal growth, semiconductor processing, and corrosive environments.
TB-TA-CRUHigh-purity 3N5 (99.95%) / 4N (99.99%) Electron-Beam Melted (RO5200 / RO5400) High-Purity tantalum (ta) crucibles, boats & chemical liners (Ta, CAS 7440-25-7) engineered for ultra-high-temperature vacuum furnaces, crystal growth, semiconductor processing, and corrosive environments.
TB-PVD-LNPrecision-tapered e-beam gun hearth liners in OFHC copper, purified & impermeable graphite, vitreous carbon, molybdenum, tungsten, alumina, and h-BN.
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.