UID marking was done using a 20Watt Fiber Laser Marking System. A dark mark was placed on the part. The 2D code and text were marked on the locations illustrated in the drawing supplied with the sample part. The 2D code had a cycle time of 6.21 seconds while the text had a cycle time of 1.12 seconds. Both the 2D code and the text needed 2 marking passes in order to get a dark mark on the steel. The focal distance was changed manually between the marking of the 2D code and the text. The time taken to change focus was not included in the cycle time. The 2D code read well in our lab.