Custom Alloy Wire Manufacturing
Custom High-Purity Metal Alloy Wire Precision Manufacturing (Au, Ag, Cu and others)
Precision manufacturing of custom high-purity alloy wire (≥25 microns), engineered to meet exact client specifications. We supply both pure metal wire and alloy wire — including gold alloy wire, silver alloy wire, copper alloy wire, 6N copper wire — as well as other critical pure metal wire and alloy wire products.
Product Gallery
Product Details
Real FAQs
Yes, trial orders are available for most products, excluding custom-engineered alloys. Please select the “Trial quantity required” option when submitting your RFQ form.
Lead times vary depending on the type of order. Below is an overview of typical processing and delivery times for our main order categories:
- Trial batch orders are typically dispatched within 5 business days from the date of payment receipt.
- Ultra high-purity metals purchase orders are fulfilled within 7–14 business days from the date of advance payment under the main agreement, depending on quantity and destination.
- Custom alloy wire manufacturing orders include a development phase and are scheduled individually based on product complexity, specification, and volume.
Lead time for each custom alloy wire contract is determined jointly with the client and includes both production and quality assurance stages.
Yes, we can arrange logistics and deliver to any international airport specified by the buyer.
Our order processing follows a structured and transparent workflow aligned with Incoterms 2020 practices:
- Client: submits an LOI (Letter of Intent) or RFQ form to Pure Metals.
- Jointly: we clarify and confirm all technical and commercial details of the LOI/RFQ.
- Pure Metals: issues an FCO (Full Corporate Offer). We intentionally skip SCO (Soft Corporate Offer) to streamline the process.
- Client: confirms the FCO and provides proof of funds (BCL or equivalent banking document).
- Optionally: a trial quantity shipment may be arranged under an accelerated procedure, based on a simplified standalone agreement. Upon receipt, the client confirms that the product quality meets the required specifications.
- Pure Metals: drafts the contract and coordinates revisions with the client.
- Both parties: sign the final contract.
- Client: makes a partial advance payment — typically 25% of the total value of the initial product batch.
- Pure Metals: dispatches the goods and provides the transport documentation to the client.
- Client: completes final payment and receives the goods at the destination in accordance with the transport documentation and agreed delivery terms.
Absolutely. Once your RFQ or LOI is agreed upon and the FCO is signed, we’d be happy to arrange a visit to one of our warehouses that best suits your order specifics. If needed, we can also organize self-pickup of your order from the warehouse under the appropriate Incoterms 2020, making the process as smooth and convenient for you as possible.
Yes, we assist with all necessary documentation to help streamline logistics, compliance, and customs clearance — regardless of the products combination or technical specifications in your order.
Yes, every delivery includes a lab certificate to verify product purity and ensure batch-to-batch consistency.
Other Products
High-Purity Alloy Wire: Technical Overview
High-purity metallic wire forms — particularly those based on gold (Au), silver (Ag), copper (Cu), and copper alloys (CuAg, CuAu, etc.) — are foundational materials in advanced microelectronics, energy systems, aerospace, and high-frequency applications. These semi-finished materials, classified under HS codes 7108.13, 7106.92, 7408.11, 7408.19, and 7411.10, are engineered with exceptional purity and dimensional precision, supporting high-performance requirements across a wide range of industries.
Gold wire is valued not only for its excellent conductivity but also for its unparalleled corrosion resistance, thermal stability, and ductility. With a melting point of 1064 °C and resistivity around 2.44 μΩ·cm, high-purity gold wire (typically 4N–5N, or 99.99%–99.999%) is ideal for wire bonding in semiconductor packaging, RF shielding, and precision contacts. Gold’s resistance to environmental degradation makes it critical for mission-critical aerospace and medical components.
Silver offers the highest electrical and thermal conductivity of all metals (1.59 μΩ·cm, 4.26 W/cm·K), making it the premier material for high-frequency and ultra-low-loss signal applications. While it is more reactive than gold, high-purity silver wire (4N–5N grade) is widely used in superconducting systems, photovoltaic modules, and microwave circuits. Surface passivation and protective coatings may be applied for longevity under oxidizing conditions.
High-purity copper wire is supplied in two dimensional categories:
- ≤ 6 mm (HS 7408.11) for microelectronic and signal applications, and
- > 6 mm (HS 7408.19) for power systems, high-current busbars, and precision electromechanical assemblies.
Copper wire in 5N purity or oxygen-free (OFHC) form combines high conductivity (1.68 μΩ·cm), moderate cost, and robust mechanical performance. Dimensional precision, grain orientation, and surface finish are optimized for applications ranging from fine signal transmission to RF power and vacuum tube electrodes.
Copper-based alloys such as CuAg (copper-silver), CuAu (copper-gold), and others combine the base conductivity of copper with improved thermal tolerance, strength, and resistance to creep or electromigration. These materials are engineered for use in environments requiring elevated temperature stability, mechanical endurance, and long-term contact performance — such as aerospace connectors, thermoelectric modules, and next-generation EV powertrains.
Product Form and Handling
The performance of these high-purity wires depends critically on impurity management. Trace elements such as Fe, P, S, O, or residual transition metals can negatively impact conductivity, corrosion resistance, and bondability. Every batch is subject to tight compositional analysis, typically accompanied by a certificate of analysis (COA), ensuring that levels of critical impurities are within specification — often <0.001% total metallic impurity content.
All wire products are spooled, coiled, or precision-cut to customer specification. Each unit is packaged in cleanroom-grade conditions — using anti-static carriers, hermetic sealants, or vacuum-sealed containers — to prevent contamination, oxidation, or surface degradation during transit. For gold and silver wire, desiccants and inert gas flushing are standard. Identification labels include lot number, purity class, diameter tolerance, and alloy system.
Applications of High-Purity Gold, Silver, and Copper Wire
Ultra high-purity wires made of gold, silver, and copper are engineered for the most demanding technologies, where conductivity, chemical stability, and structural integrity are paramount. With purity levels reaching 99.999% (5N) and above, these metallic wires serve as essential materials across a wide range of industries.
