WASHINGTON, July 6 (Reuters) - The Pentagon holds a strategic U.S. stockpile for germanium but currently has no inventory reserves for gallium, a spokesperson said on Thursday, after China announced export restrictions on the two metals used in semiconductors. "The (Defense) Department is proactively taking steps using Defense Production Act Title III authorities to increase domestic mining and processing of critical materials for the microelectronics and space supply chain, including gallium and germanium," the spokesperson said. Germanium is used in high-speed computer chips, plastics and military applications such as night-vision devices, as well as satellite imagery sensors. Gallium is used in radar and radio communication devices, satellites and LEDs. While major defense contractors like Lockheed Martin Corp (LMT.N) may not buy gallium and germanium directly, they likely purchase semiconductors from suppliers who source Chinese gallium and germanium, said Arun Seraphin, executive director for the National Defense Industrial Association’s Emerging Technologies Institute.

---

Persons: Arun Seraphin, ”, Dak Hardwick, Hardwick, Xi Jinping, Idrees Ali, Phil Stewart, Valerie Insinna, Rami Ayyub, Doina Chiacu, Mark Porter, Marguerita Choy Organizations: Pentagon, China, Defense, Department, Lockheed Martin Corp, National Defense Industrial, Emerging Technologies, Aerospace Industries Association, U.S, Shanghai Cooperation Organisation, Thomson Locations: U.S, China