The Antimony is a glossy, silver-gray semi-metal that occurs naturally inside minerals like stibnite. When extracted and purified, it produces a metal that looks visually similar to construction metals but behaves more like glass under bending pressure—it cracks because it is extremely brittle. Because of this, antimony is rarely processed into flexible forms like wires or sheets by itself. Its most unusual advantage is that it expands slightly during solidification from molten form, which historically made it trusted for high-precision casting and printing type metal where shrinkage would cause mold gaps. Antimony also oxidizes much slower than iron and steel at normal atmospheric conditions, keeping corrosion low unless exposed to acids.

Antimony supports batteries by strengthening lead-tin metal grids to tolerate repeated charge-discharge cycles with less internal deformation. It is widely used in flame-retardant additives, ceramics, glass refining, solder strengthening, cable sheathing, pigments, semiconductors, and hard industrial alloys. When blended with lead or tin, antimony significantly increases hardness and fatigue resistance. Flame-retardant antimony compounds slow down combustion at the reaction chemistry level instead of acting as a physical barrier. Even though antimony is not flexible, it remains deeply important for reinforcement, energy durability, casting precision, and fire safety behaviors.