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Refractory Metals · TB-W-CU

Tungsten-Copper (WCu) & Molybdenum-Copper (MoCu) Thermal Submounts & Electrodes

High-purity Vacuum Cu-Infiltrated Composite (Zero Open Porosity, Hermetic) Tungsten-Copper (WCu) & Molybdenum-Copper (MoCu) thermal submounts & electrodes (WCu (90/10, 80/20, 75/25) & MoCu (85/15, 70/30), CAS 7440-33-7) engineered for ultra-high-temperature vacuum furnaces, crystal growth, semiconductor processing, and corrosive environments.

Alternate & search designations: High-purity WCu (90/10, 80/20, 75/25) & MoCu (85/15, 70/30) refractory metal, vacuum furnace Tungsten-Copper (WCu) & Molybdenum-Copper (MoCu) thermal submounts & electrodes, Vacuum Cu-Infiltrated Composite (Zero Open Porosity, Hermetic) WCu (90/10, 80/20, 75/25) & MoCu (85/15, 70/30)
Purity / Grade OptionsVacuum Cu-Infiltrated Composite (Zero Open Porosity, Hermetic)
Standard DimensionsPlates, Sheets (0.25–25 mm), Rods, & CNC-Machined Ni/Au-Plated RF Flanges
Available ConfigurationsStandard mill stock & precision CNC / wire-EDM custom machining to drawing
Ordering & MOQSpecification-based quote · Prototype & production lots

Material & Engineering Overview

Consolidated by powder metallurgy, vacuum arc remelting (VAR), or electron-beam melting and stress-relieved for high-temperature dimensional stability, our Tungsten-Copper (WCu) & Molybdenum-Copper (MoCu) thermal submounts & electrodes (WCu (90/10, 80/20, 75/25) & MoCu (85/15, 70/30), CAS 7440-33-7) products deliver reliable performance in vacuum, inert-gas, and reducing furnace atmospheres.

By infiltrating a porous sintered tungsten or molybdenum skeleton with oxygen-free copper, WCu and MoCu composites combine tunable low thermal expansion (CTE 6.5–11.5 ppm/K, matching GaN/SiC, GaAs, AlN, and Al2O3) with high thermal conductivity (180–240 W/m·K). 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.

Standard Shipment Documentation: Manufacturer Mill Test Certificate / Batch COA (chemical purity and interstitial O, N, C, H ppm analysis) plus dimensional inspection report.

Primary Research & Industrial Applications

  • CTE-matched thermal submounts and RF power package flanges for GaN-on-SiC, GaAs, and laser diodes
  • Sinker EDM and PCD (polycrystalline diamond) erosion machining electrodes
  • High-voltage SF6 circuit-breaker arc contacts and pulsed-power rail electrodes
  • Resistance-welding electrodes and aerospace counterweight/damping blocks

Nominal Material Reference Properties

Property / MetricNominal Reference Value (Grade Dependent)
Composition & CAS #WCu (90/10, 80/20, 75/25) & MoCu (85/15, 70/30) (CAS 7440-33-7)
Purity / Alloy GradeVacuum Cu-Infiltrated Composite (Zero Open Porosity, Hermetic)
Density14.5–17.0 (WCu) / 9.7–10.0 (MoCu) g/cm³
Melting PointCu phase 1,085 / W skeleton 3,422 °C
Available Mill & Machined FormsPlates, Sheets (0.25–25 mm), Rods, & CNC-Machined Ni/Au-Plated RF Flanges

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.

What to Specify in Your Quote Request

Specify WCu (90/10, 80/20, 75/25) & MoCu (85/15, 70/30) purity or alloy grade (Vacuum Cu-Infiltrated Composite (Zero Open Porosity, Hermetic)), form and dimensions (Plates, Sheets (0.25–25 mm), Rods, & CNC-Machined Ni/Au-Plated RF Flanges), 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 Tungsten-Copper (WCu) & Molybdenum-Copper (MoCu) Thermal Submounts & Electrodes RFQ ↗

Technical & Procurement FAQ

What atmosphere is required when operating Tungsten-Copper (WCu) & Molybdenum-Copper (MoCu) thermal submounts & electrodes (WCu (90/10, 80/20, 75/25) & MoCu (85/15, 70/30)) at high temperature?
Refractory metals oxidize in air above 400–500 °C; operate in high vacuum (≤10⁻⁴ Torr), high-purity argon/helium, or reducing hydrogen/forming-gas atmospheres.
Can TB-W-CU be custom machined to our engineering print?
Yes. Attach a STEP/DXF/PDF drawing on the RFQ page for precision CNC turning, milling, wire-EDM, laser cutting, or forming with small-batch R&D minimums.
What certification ships with Tungsten-Copper (WCu) & Molybdenum-Copper (MoCu) thermal submounts & electrodes?
All shipments include the producing mill's batch chemical Certificate of Analysis (ICP/GDMS trace impurities and interstitial gas content) and dimensional verification.
Cross-referenced catalog

Related technical materials.

Complementary furnaceware, substrates, PVD consumables, and refractory hardware frequently ordered together.

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Typical SizeThickness 0.25–40 mm; up to 400 × 400 mm
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Purity / GradePVT Single-Crystal N-Type Conductive & High-Purity Semi-Insulating (HPSI)
Typical Size10×10 mm, 5×5 mm, 10×5 mm, Ø 1", Ø 2", Ø 3", Ø 4" × 0.5 mm / 1.0 mm
Custom & catalog specifications

Need pricing, lead time, or custom dimensions?

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.

Start a quote request ↗