You want to impress your new boss and reduce the carburizing time it takes to produce tool-bits for aerospace machining operations. You have a technician do some microprobe measurements and determine that your tool-bits have 0.45 wt.% carbon at a depth 5.0 mm below the surface. You also have the technician do some hardness measurements and determine that you need 0.45 wt.% carbon at a depth of only 2.5 mm below the surface.
1. How much time can you save by implementing a change in the production process (i. e., reducing how long the tool-bits are heated for)? Give the time saved as a percentage.