The combustion ring is made from a tungsten-carbide coated steel, while the oil ring is made from titanium. The tolerances are so thin, they don't function properly outside of their very thin ...

Tungsten carbide stands out for its toughness and resistance to wear, making it a valuable addition to tillage tools as well as seeding and harvesting machinery.

much of which was directed to the manufacture of tungsten carbide tooling. Tungsten has the highest melting point known, 3,422 °C, and is an extremely dense, hard, and tough metal. Its properties ...