The Antimony is a valuable silver-gray element known for its natural hardness and resistance to high temperatures. It is commonly mistaken as a standard metal, but it has properties closer to semi-metals, giving it limited ductility, meaning it does not stretch or bend easily. Instead, it fractures under pressure. Despite this weakness, antimony is extremely useful when used as a strengthening additive. It shows good thermal stability, electrical reinforcement behavior, and an oxidation rate slower than iron and steel at normal temperature. Antimony also has a rare expansion behavior during solidification, helping it achieve high casting accuracy when molten, which historically made it important even before modern metallurgy.

Today, antimony is seen in batteries, electronic semiconductors, hard alloys, solder components, flame-retardant chemical systems, glass refining, pigments, ceramics, and metal blends that demand hardness under stress. It strengthens lead and tin alloys, which are later used in bearings, sheets, and industrial parts. In flame-retardant applications, antimony compounds work by slowing ignition reactions chemically rather than physically resisting heat. Its recyclability within alloys also ensures it remains environmentally useful. Antimony may be brittle, but in engineered blends, it supports long service life and improved safety.