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Chromium is a chemical element with symbol Cr and atomic number 24. It is the first element in Group 6. It is a steely-grey, lustrous, hard and brittle metal which takes a high polish, resists tarnishing, and has a high melting point.
C 3299(OTTO) sputtering target 99.95% 3 inch dia x 2 mm thick - used in jet engines and gas turbines in lieu of common structural materials.