Antimony is a chemical element with symbol Sb and atomic number 51. A lustrous gray metalloid, it is found in nature mainly as the sulfide mineral stibnite (Sb2S3).
A 8663 (OTTOKEMI) Antimony sputtering target, diam. × thickness 2 inch × 3 mm, 99.99% Cas 7440-36-0 - used as an alloy hardener as well as in metallurgical applications.