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 is a metal in group VIB of the periodic table with atomic number 74, an atomic weight of 183.85, and a density of 19.3 Mg/m 3. Its melting point is 3410 C, and it boils at 5930 C. In the ...