Rhenium MOCVD Heater Filaments
The highest quality rhenium heater filaments for the MOCVD Industry
Rhenium Alloys is a leader in the production of high-quality rhenium heater filaments for the MOCVD industry. The company serves as an OEM supplier to many of the world’s most respected MOCVD equipment manufacturers and is a trusted specialty filament provider to some of the most innovative and technologically advanced LED companies worldwide.
Rhenium Alloys manufactures rhenium heater filaments for today’s leading systems and continues to support legacy platforms, including the D125, D180, and D300 units. Both OEM and custom filament solutions are produced daily, with the capability to meet virtually any customer design specification or thickness requirement.
Made in the USA
Our Rhenium MOCVD Heater Filament products are proudly Made in the USA.
Proprietary, Patent Pending, Surface Treatment
Rhenium Alloys also offers a proprietary, patent pending, surface treatment which increases the heat transfer efficiency of the filament without adding the risk of contamination from steel shot-peening and other aggressive mechanical operations utilized by our competitors. This allows us to offer the highest purity Rhenium Heater Filament on the market.

SURFACE TREATMENT THERMAL EMITTANCE
RAI RE ELEMENT WITH PATENT PENDING TREATMENT
- Highest Initial Emittance
- Highest Final Emittance
- Ultra-High Purity Rhenium
- Larger, More Stable Microstructure
- Patent Pending – Zero Contamination Risk Surface Treatment
RHENIUM FILAMENT DISCOUNTS AND TRADE-INS
Rhenium Alloys offers discounts on new rhenium filaments with the trade-in of obsolete or old rhenium filaments.
MOCVD HEATER FILAMENT REPAIR
Rhenium Alloys can also repair minimally damaged filaments on a case by case basis. Although most repairs return the filaments back to original functionality, Rhenium Alloys does not warranty any repaired filaments.
WHAT IS MOCVD?
MOCVD stands for Metal Organic Chemical Vapour Deposition, a technique for depositing thin layers of atoms onto a semiconductor wafer. MOCVD allows the build-up of many layers, each of precise thickness, creating a material with specific optical and electrical properties.
Standard Rhenium MOCVD Heater Filaments by System Type

Rhenium Properties

Fabrication Characteristics and Chemical Properties
- Welding: Electron Beam welding and Laser joining methods produce extremely ductile joints.
- General Resistance to Corrosion: Oxidation in air is catastrophic above 600 ᵒC due to the formation of rhenium heptoxide (Re₂O₇), which has a melting point of 363 ᵒC. Rhenium is resistant to carburization; it withstands arc corrosion well and has good wear resistance.
- Resistance to Specific Agents: Rhenium is resistant to water cycle corrosion; to sulfuric acid and hydrochloric acid (but can be dissolved by nitric acid); to liquid alkali metal corrosion; and to attack by molten zinc, silver, copper, and aluminum.