Below is a list of Steel Alloy manufacturers from Downingtown, Pennsylvania.

Composed predominantly of iron, steel is an alloy made from a combination of iron, carbon and occasionally other elements as well. The carbon content of steel is minuscule; although it ranges, carbon makes up less than or equal to 1.7% of a steel alloy by weight. As the carbon content nears its maximum level, the steel becomes stronger but more brittle.