Low pressure carburization (LPC) processes are becoming more widespread throughout industry due to the reduced cycle times and the control over the carbon profile through the case. Unlike gas carburization, which utilizes a constant carbon potential to maintain the available carbon on the part surface at a specific value, LPC utilizes boost and diffuse steps. A boost step involves the temporary addition of a carbon carrying gas to the furnace, usually acetylene, to increase the surface carbon to the saturation limit of austenite.