Free cutting brass, also known as leaded brass, is a type of brass alloy that is specifically designed for machining operations such as turning, drilling, and milling. The addition of lead to the alloy provides improved machinability, making it easier to shape and form the material.
Free cutting brass typically contains around 2-3% lead by weight, along with copper and zinc in varying proportions. The lead in the alloy forms small chips during machining, which helps to break the continuous chips that can otherwise become tangled around the cutting tool.
Free cutting brass has excellent corrosion resistance, good strength, and a bright golden color. It is often used for components in machinery, electronics, plumbing, and other applications that require precision machining. However, the lead content in free cutting brass can make it unsuitable for certain applications, particularly those involving contact with food or drink or in environments where lead contamination is a concern.feihongalloys.com