Margaret W. "Hap" Brennecke

Margaret W. "Hap" Brennecke (1911 – 2008) was an American metallurgist and the first female welding engineer to work in the Materials and Processes Laboratory at NASA's Marshall Space Flight Center, where she contributed to the Saturn V rocket program.

Early life and education Brennecke was born in 1911 in Emmaus, Pennsylvania. She earned a chemistry degree from Ohio State University and later studied metallurgy at Carnegie Institute of Technology, University of Pittsburgh, and University of California, Los Angeles.

Career ALCOA She worked for Aluminum Company of America (ALCOA) for 22 years as a research metallurgist, identifying materials for military vehicles and engineering projects used in World War II. Brennecke, M. W. (1970). Thermal treatment and mechanical properties of aluminum-2021 (No. MFS-20559).