Tungsten (W): Hard Carbide Tools, Heat-Resistant Alloys, and Electrical Contact Materials

Tungsten is a metallic element with chemical symbol W and atomic number 74, located in Group VIB of the sixth period in the periodic table. In nature, tungsten mainly exists as hexavalent cations with ionic radius of 0.68×10-10m. Due to the small radius, high valence and strong polarization ability of W6+ ions, tungsten primarily forms complex anions [WO4]2-, which combine with cations like Fe2+, Mn2+, and Ca2+ in solutions to precipitate as wolframite or scheelite.

Applications

1. For manufacturing tungsten carbide-based hard alloys
2. For heat-resistant and wear-resistant alloys
3. For contact materials and high-density alloys
4. For high-temperature resistant materials

Product Series

Health and Safety Information

Signal Word	Danger
Hazard Statements	H228-H315-H319
Hazard Codes	N/A
Precautionary Statements	P210-P305+P351+P338
Flash Point	Not applicable
Risk Codes	N/A
Safety Statements	N/A
RTECS Number	YO7175000
Transport Information	NONH
WGK Germany	nwg
GHS Pictogram

Packaging Specifications

• Standard packaging: 50 kg/drum, 500 kg/pallet, ton bags
• Sample packaging: 500 g/bag, 1 kg/bottle

About Tungsten
Approximately 50% of the world's mined tungsten is used for high-quality steel production, 35% for hard steel manufacturing, 10% for tungsten wire production, and 5% for other applications. Tungsten has extremely wide applications, with tungsten carbide (WC) hard alloys being the most common. Such hard alloys are extensively used in metal processing, mining, oil drilling and construction industries as durable materials.

Additionally, tungsten filaments are widely used in light bulbs and vacuum tubes. Tungsten is also commonly employed as electrodes. Due to its exceptional hardness and density, tungsten is ideal for making heavy metal alloys used in armor, heat sinks, and high-density applications like counterweights, balance weights, and ballasts for ships and aircraft.

Darts often contain 80% to 97% tungsten because of its high density. High-speed steels may contain up to 18% tungsten. High-temperature alloys for turbine blades, durable components and protective coatings (e.g., Hastelloy, Stellite) contain tungsten. Tungsten compounds can serve as catalysts.