Tungsten plate price

The price of tungsten plates is primarily driven by purity levels (typically 99.95% or higher) and density (theoretical density of 19.3g/cm³). Higher purity is essential for semiconductor and vacuum furnace applications, which commands a premium. Additionally, the surface finish—whether it is as-rolled, alkali-washed, or ground/polished—significantly impacts the final cost due to the additional labor and machining required for smoother finishes.

Tungsten is a refractory metal that is difficult to machine. Thin foils (below 0.1mm) and extra-large plates are more expensive due to the complexity of the rolling process and the high rate of material scrap. Buyers should also consider the annealing state; vacuum-annealed plates prevent brittleness and are easier to process further, though they carry a higher price tag than hard-rolled plates.

Tungsten plates are widely used in high-temperature vacuum furnace heat shields, X-ray shielding components, and sputtering targets for thin-film coating. For high-temperature use, ensure the supplier provides a recrystallization temperature report. For medical or nuclear shielding, the uniformity of density is the critical metric to ensure no radiation leakage, which may require ultrasonic flaw detection.

Professional buyers should ensure products meet ASTM B760 (Standard Specification for Tungsten Plate, Sheet, and Foil). It is also vital to request an ISO 9001 certified manufacturer's test report and a Material Test Certificate (MTC) that details the chemical composition, specifically tracking trace elements like Iron (Fe), Aluminum (Al), and Silicon (Si) which can affect performance in electronic applications.

Tungsten is a strategic industrial metal with prices influenced by APT (Ammonium Paratungstate) market indices. To secure stable pricing, buyers should consider long-term framework agreements or bulk purchasing when market indices are low. Always request a quote validity period (usually 3-7 days) to protect against sudden market fluctuations during the approval process.

When sourcing from Made-in-China.com, focus negotiations on yield rates and tolerance precision rather than just the per-kilogram price. A supplier offering a slightly higher price but tighter thickness tolerances (+/- 0.05mm) can save you significant costs in secondary machining and material waste. Always clarify if the price includes export tax rebates and specialized wooden crate packaging required for heavy metal transport.

Tungsten is extremely heavy and can be brittle. Ensure the contract specifies vacuum packaging with moisture-proof desiccant and reinforced plywood cases to prevent oxidation and edge cracking during sea freight. For transaction security, utilize trade insurance services on platforms like Made-in-China.com to ensure that payment is only released upon verification of the third-party inspection report (e.g., SGS or Intertek).

Buyers must check their local customs tariff codes (HS Code 8101.99) for specific import duties on tungsten wrought products. Additionally, ensure the supplier provides a Conflict Mineral Reporting Template (CMRT) to prove the tungsten is ethically sourced, which is a mandatory compliance requirement for many Western electronics and aerospace corporations.