Chu-phay Yap (1902-1971), a metallurgist, was elected Member of the Chinese Academy of Sciences in 1955. He established the CAS Institute of Chemical Metallurgy, led the development of China’s oxygen converter steelmaking technology, and proposed three theories for strengthening blast furnace smelting. He conducted research on the comprehensive utilization of China’s complex ores and made great contributions to China’s chemical metallurgy industry.