Overview
W120 is a high-purity tungsten wire widely used in industrial applications requiring extreme temperature resistance and durability. Tungsten, with the highest melting point of all metals, makes W120 indispensable in environments where other materials would fail. Its primary use is in vacuum tubes and lighting filaments, where its ability to withstand high temperatures without deformation is critical. The wire is also utilized in aerospace and electronics for its reliability under stress.
Physical and Chemical Properties
W120 exhibits exceptional thermal and electrical conductivity, with a melting point of 3422°C and a boiling point of 5555°C. Its density of 19.25 g/cm³ makes it one of the densest metals, contributing to its strength and durability. The wire is chemically inert under normal conditions but can oxidize at high temperatures in the presence of oxygen. It is insoluble in water and most acids, though it can react with strong oxidizing agents. These properties make it ideal for high-stress applications.
Main Applications
W120 is predominantly used in the manufacturing of vacuum tubes, incandescent light bulbs, and electron emitters due to its high melting point and electrical conductivity. In aerospace, it serves in rocket nozzles and other high-temperature components. The electronics industry relies on W120 for semiconductor production and X-ray tubes. Its durability also makes it suitable for specialized welding electrodes and heating elements in industrial furnaces.
Safety and Storage
Handling W120 requires precautions to avoid inhalation of fine dust particles, which can be harmful. Use gloves and protective eyewear when working with the wire to prevent skin irritation or eye damage. Store W120 in a dry, inert environment to minimize oxidation. Moisture and reactive gases can degrade its performance over time. Proper storage ensures longevity and maintains its mechanical properties.
B2B Procurement Guide
When procuring W120, prioritize suppliers with certifications for high-purity tungsten (99.95% or higher). Specify diameter and length requirements to match your application needs. Bulk purchases may offer cost savings, but verify storage conditions to prevent material degradation. Request material test reports (MTRs) to ensure compliance with industry standards such as ASTM or ISO.
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