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INTERNATIONAL TUNGSTEN INDUSTRY ASSOCIATION

Information on tungsten: sources, properties and uses

Mining and Construction

Heavy Duty Mining and Construction

This important and large segment (in particular in terms of tonnages) includes tools for road planning, soil stabilisation, asphalt reclamation, vertical and horizontal drilling (rock-, oil and gas), tunnel boring, surface mining, and others.  For these applications, impact resistance, abrasion resistance and high fracture toughness are required.  Commonly, such cemented carbide grades exhibit coarse WC grain (up to 20μm) and 6 to 10 wt % Co.  To minimize wear on the steel holder of the cemented carbide part during application, WC-based hardfacings are used for wear protection.