Bar, Cold-Drawn

One of two cold processes (see Bar, Cold-Finished) for producing finished bar, this is the one most commonly used. Cold-drawn bars are produced by removing the scale in some manner, then pulling the clean material through a tungsten carbide die of smaller size with the assistance of a lubricant. This cold reduction of the cross section increases the tensile, yield and hardness of the material. The steel’s machineability is usually improved. These types of bars are typically used for screw machines, shafts and cylinders, along with many other automotive and farm equipment applications.