Overview
Tungsten, symbolized as W from its alternate name Wolfram, is a transition metal with the highest melting point of all metals. It is primarily extracted from wolframite and scheelite ores. Due to its exceptional properties, tungsten is indispensable in high-temperature and high-strength applications. Historically, tungsten was first isolated in 1783. Today, it plays a crucial role in industries ranging from electronics to defense, owing to its ability to retain strength at extreme temperatures.
Physical and Chemical Properties
Tungsten is renowned for its remarkable density and melting point, making it ideal for applications where durability under thermal stress is required. It is also highly resistant to corrosion and has excellent electrical conductivity. Chemically, tungsten forms compounds such as tungsten carbide, widely used in cutting tools. Its resistance to acids and bases, except for specific mixtures like nitric acid and hydrofluoric acid, enhances its utility in harsh environments.
Main Applications
Tungsten is extensively used in the production of incandescent light bulb filaments due to its high melting point. It is also a key component in superalloys for aerospace engines and turbine blades. In manufacturing, tungsten carbide is employed in cutting and drilling tools. Additionally, its radiation shielding properties make it valuable in medical and nuclear applications.
Safety and Storage
Handling tungsten requires precautions, especially in powder form, which can pose inhalation hazards. Proper ventilation and protective gear such as masks and gloves are essential. Storage should be in sealed containers away from moisture and reactive chemicals. Tungsten’s stability under normal conditions makes it relatively safe when stored correctly.
B2B Procurement Guide
When procuring tungsten, consider the purity level, which typically ranges from 99.95% to 99.99% for industrial use. Certified suppliers should provide material test reports (MTRs) to ensure quality. Pricing depends on market demand and form (powder, wire, or ingot). Bulk purchases may offer cost benefits, but verify lead times and supplier reliability to avoid disruptions.
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