Description
📦 High-Performance Ta-7.5W Alloy Rod – Tantalum-Tungsten Bar for Extreme Conditions
📘 Product Overview
The Ta-7.5W Alloy Rod is a high-performance refractory metal bar composed of tantalum alloyed with 7.5% tungsten by weight. Designed to perform under extreme heat and chemical stress, this alloy rod delivers a unique combination of mechanical strength, thermal stability, and corrosion resistance, making it an ideal choice for harsh industrial environments. Our tantalum-tungsten alloy bars are manufactured via vacuum arc melting (VAM) or powder metallurgy, ensuring superior structural integrity and purity across all batches.
With enhanced hardness and creep resistance compared to pure tantalum, Ta-7.5W Alloy Rods are frequently used in aerospace, nuclear reactors, semiconductor devices, and corrosive chemical processing. This alloy excels in high-temperature furnaces, sputtering targets, ion implantation chambers, and high-vacuum systems where conventional materials fail.
🧪 Chemical Composition (Typical)
| Element | Symbol | Content (wt%) |
|---|---|---|
| Tantalum | Ta | 92.5 ± 0.5 |
| Tungsten | W | 7.5 ± 0.5 |
| Oxygen | O | ≤ 0.015 |
| Nitrogen | N | ≤ 0.010 |
| Carbon | C | ≤ 0.010 |
| Hydrogen | H | ≤ 0.0015 |
All elements are tested using ICP-OES and gas analyzers (LECO) to ensure precision and batch consistency.
⚙️ Mechanical Properties (Annealed)
| Property | Typical Value |
| Tensile Strength | ≥ 300 MPa |
| Yield Strength (0.2%) | ≥ 220 MPa |
| Elongation | ≥ 20% |
| Vickers Hardness | 140 – 170 HV |
| Density | 16.7 – 17.2 g/cm³ |
The Ta-7.5W Alloy Rod exhibits a higher yield and tensile strength than pure tantalum while maintaining excellent ductility, making it machinable and formable under hot and cold working conditions.
🌡️ Physical Properties
| Property | Value |
| Melting Point | ~3050 °C |
| Boiling Point | ~5600 °C |
| Electrical Resistivity | ~15.5 µΩ·cm |
| Thermal Conductivity | ~53 W/m·K |
| Coefficient of Expansion | ~6.1 × 10⁻⁶ /°C |
| Magnetic Property | Non-magnetic |
These values make Ta-7.5W Alloy Rods a viable solution in plasma-based environments, pulsed power systems, and fusion reactors.
🔍 Applications
🧪 Chemical & Electrochemical Industry
- Anode/cathode components for acid electrolyzers
- Stirring rods and structural frames for HF/HCl processing
- Crucibles and nozzles for halide vapor environments
🚀 Aerospace & Defense
- Heat shields and thermal barriers in scramjet engines
- Nozzle inserts and high-speed vehicle components
- Propulsion chamber liners and insulation hardware
🔬 Semiconductor & High-Vacuum Equipment
- Components for ion implantation tools
- Tantalum-tungsten backing plates
- Crucibles and electrode materials
☢️ Nuclear & Energy
- Control rod hardware and shielding sleeves
- High-density support pins in reactor cores
- Thermal barriers in tritium-handling systems
📐 Customization Options
| Parameter | Range / Notes |
| Diameter | 1 mm – 80 mm |
| Length | Up to 2000 mm |
| Tolerance | ISO 2768-f or per customer spec |
| Finish | Turned / Polished / Centerless Ground |
| Form | Round bar, hexagonal rod, or machined |
Our production supports custom alloys, tight-tolerance machining, and mirror-polishing to match application-specific requirements.
✅ Key Features of Ta-7.5W Alloy Rod
- 🔹 Superior high-temperature strength
- 🔹 Improved creep resistance vs. pure tantalum
- 🔹 Exceptional corrosion resistance in acids
- 🔹 Non-magnetic and chemically inert
- 🔹 Machinable and weldable with appropriate techniques
- 🔹 Suitable for ultra-clean environments
- 🔹 Complies with ASTM B365 (Tantalum Base Standard, alloy extension)
📦 Packaging & Logistics
- 🔧 Packed in sealed anti-static poly-wrap
- 📦 Cased in vibration-proof wooden crates
- 📜 Includes full Mill Test Certificate (EN10204 3.1)
- 🌍 Global delivery available (DHL, FedEx, sea freight)
🏭 About NiTiCu Metal
Shaanxi Nickel Titanium Copper Metal Co., Ltd., based in Baoji, China, is a leading supplier of exotic refractory materials. We provide high-performance alloys like Ta-7.5W Alloy Rods to clients in aerospace, semiconductor, and energy sectors worldwide.
📧 Email: sales@niticu.com
📞 Phone / WhatsApp / WeChat: +86 13335373172
🏭 Factory: Baotai Road Industrial Park, High-tech Zone, Baoji City, Shaanxi, China
🌐 Website: https://niticu.com
📩 Need a quote or technical guidance? Reach out — we respond within 24 hours.
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