March Li is lead metallurgist and customer applications engineer for the power transmission division of Lufkin Industries LLC. He is responsible for various materials selection — including carbon and alloy steels, gray iron, ductile iron, aluminum alloys, copper alloys, etc.; heat treatment — normalizing/annealing, quenching, tempering, carburizing and nitriding; precise control of case hardening and disposition; welding; fatigue and fracture; and failure analysis. Li also provides metallurgical assistance to the product development of high-speed, low-speed and marine gearboxes (gears/pinions, shafts, housing and covers, etc.) for Lufkin's power transmission division, including gear repair in both the U.S. and abroad.