Yttrium foil, dia 1 mm, 99.9%

Yttrium is a chemical element with symbol Y and atomic number 39. It is a silvery-metallic transition metal chemically similar to the lanthanides and has often been classified as a "rare earth element"

Y 1400a (OTTO) Yttrium foil, dia 1 mm, 99.9% Cas 7440-65-5 - used as yttrium phosphor to produce the red colours on television screens and monitors. It also finds applications as a constituent of superconductors as well as in X-ray filters and superalloys.