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What are Gallium and Germanium? China curbs exports of metals for tech

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Semiconductors are a key focus in the technology trade war taking place between the U.S. and China.

William_potter | Istock | Getty Images

China is restricting exports of two niche metals that are key to manufacture electronics and semiconductors, as the tech battle with the U.S. and Europe heats up.

Germanium and gallium are the two metals in the spotlight.

But what and how crucial are they?

Why is China slapping export curbs on the metals?

What are germanium and gallium?

Germanium and gallium are metals that are not found naturally. They are instead formed, usually as a by-product of the refineries of other metals.

Germanium, a silvery-white metal, is formed as by-product of zinc production. Fellow soft, silvery metal Gallium, meanwhile, is a by-product of processing bauxite and zinc ores.

What are germanium and gallium used for?

Germanium has several uses, including in solar products and fiber optics. The metal is transparent to infrared radiation and can be employed in military applications, such as night-vision goggles.

The solar panels that contain germanium have applications in space.

Gallium is used for manufacturing the gallium arsenide chemical compound, which can make radio frequency chips for mobile phones and satellite communication, for example. That compound is also a key material in semiconductors.

Which country produces the metals?

China produces 60% of the world’s germanium and 80% of gallium, according to the Critical Raw Materials Alliance, an industry body.

Gallium arsenide is complex to produce, and only a few companies in the world can do so. One is located in Europe, while the others are in Japan and China, the CRM Alliance says.

How big of a deal are China’s curbs?

“A warning shot, not a death blow,” Eurasia Group said in a note on Monday.

“But these latest measures are more limited in scope, and while the new rules require Chinese exporters to first obtain a license, no language automatically bars export to specific countries or end-users.”

The U.S. and Europe don’t import huge amounts of these materials. The U.S. received $5 million of gallium metal and $220 million of gallium arsenide in 2022, according to government figures.

Germanium intake was higher, with the country taking $60 million of the metal, while the EU imported $130 million of Germanium in 2022, according to data from S&P Global Market Intelligence.

Other countries are also able to produce these metals. Belgium, Canada, Germany, Japan, and Ukraine can manufacture germanium. Japan, South Korea, Ukraine, Russia and Germany meanwhile produce gallium.

There are also potential substitutes for these metals.

China’s scale allowed it to produce them at a lower cost than elsewhere, but Eurasia Group notes that Beijing’s moves will have a “limited impact on global supply given the targeted scope.”

“It is a shot across the bow intended to remind countries including the United States, Japan, and the Netherlands that China has retaliatory options and to thereby deter them from imposing further restrictions on Chinese access to high-end chips and tools,” Eurasia Group said.

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