Vacuum-degassed 4N (99.99%) / 4N5 (99.995%) chromium (Cr, CAS 7440-47-3) evaporation pellets, granules, and slugs engineered for spit-free electron-beam and resistive thermal PVD.
Prepared specifically for high-vacuum electron-beam and resistive thermal evaporation, our 4N (99.99%) / 4N5 (99.995%) chromium (Cr, CAS 7440-47-3) deposition materials undergo vacuum degassing or high-temperature sintering to eliminate trapped volatiles and micro-voids that cause melt spitting and pinhole film defects.
Chromium sublimes smoothly before melting in high vacuum; use tungsten boats, baffled tantalum boxes, or Cr-plated tungsten rods (or graphite/Cu e-beam liners). Supplied in cleanroom argon-flushed containers by weight (50 g to 1,000 g lots) or piece count, accompanied by the manufacturer's batch trace-impurity Certificate of Analysis.
| Property / Metric | Nominal Reference Value (Grade Dependent) |
|---|---|
| Formula & CAS # | Cr (CAS 7440-47-3) |
| Purity Tiers | 4N (99.99%) / 4N5 (99.995%) |
| Density & Melting/Sublimation | 7.19 g/cm³ · MP/Subl. ~1,907 (Sublimes ~1,400 °C in vacuum) °C |
| Standard Forms | 1–3 mm & 2–5 mm degassed chunks/granules; Cr-plated W evaporation rods |
| Recommended Liner / Boat | Chromium sublimes smoothly before melting in high vacuum |
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 Cr purity (4N (99.99%) / 4N5 (99.995%)), preferred pellet or granule size (1–3 mm & 2–5 mm degassed chunks/granules; Cr-plated W evaporation rods), deposition method (e-beam hearth pocket cc volume vs. resistive W/Mo/Ta boat), and pack weight in grams.
Include target quantity, destination country/postal code for express air freight calculation, and any special cleanroom bagging or certification requests.
Prepare Chromium (Cr) Evaporation Materials RFQ ↗Complementary furnaceware, substrates, PVD consumables, and refractory hardware frequently ordered together.
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TB-PVD-BT99.95% pure tungsten, molybdenum, and tantalum resistive thermal evaporation boats, baffled box sources, and stranded tungsten wire baskets/coils.
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.