Tungsten wire price

The price of tungsten wire is primarily driven by purity levels (typically 99.95% or higher), diameter tolerance (measured in microns), and surface finish (black, cleaned, or polished). Buyers should specify the tensile strength and ductility required for their specific application, as high-precision wires used in medical or aerospace sectors command a significant premium over standard industrial heating element grades.

Standard pure tungsten is more affordable but may sag at high temperatures. Doped tungsten (Non-sag tungsten), which contains small amounts of potassium, silicon, and aluminum, is more expensive but essential for lighting filaments and high-temperature furnace applications to prevent recrystallization. Always verify the chemical composition report to ensure the doping agents align with your performance requirements.

Ensure the supplier adheres to ASTM B760 (Standard Specification for Tungsten Plate, Sheet, and Foil) or ASTM F288 (Standard Specification for Tungsten Wire for Electron Devices and Lamps). For international trade, ISO 9001 certification is a baseline requirement to ensure consistent manufacturing processes and traceability of raw materials.

To maximize value, negotiate based on weight-based pricing (USD/kg) rather than length for large orders. Seek tiered pricing structures where discounts of 10-20% are applied for volumes exceeding 50kg. Additionally, sourcing from integrated manufacturers on Made-in-China.com who handle both ore processing and wire drawing can reduce middleman markups.

The most significant risks include market price volatility of tungsten concentrate and quality discrepancies regarding wire diameter consistency. To mitigate this, use Secure Payment services on Made-in-China.com to ensure funds are only released after a third-party pre-shipment inspection (PSI) confirms the technical specs.

Tungsten wire is brittle and sensitive to oxidation. Ensure the contract specifies vacuum-sealed plastic packaging with desiccant and sturdy wooden crates to prevent spool deformation. For high-value, low-weight shipments, Air Freight (DAP or CPT terms) is recommended to minimize handling time and environmental exposure.

Focus on long-term supply stability and customization capabilities. Ask for a Material Safety Data Sheet (MSDS) and a Certificate of Analysis (COA) for every batch. Professional suppliers on Made-in-China.com should be able to provide scanning electron microscope (SEM) images of the wire surface upon request to prove quality.