America’s army could remain vulnerable to a supply squeeze until at least 2030. But Europe, Japan and South Korea may take decades longer to wean themselves off China
Today Western countries wish they, too, could produce some more. On July 4th China announced that it would restrict exports of gallium and germanium, of which it supplied 98% and 60% of global output, respectively, in 2022. Produced in tiny quantities, the metals have little commercial value. They are nevertheless crucial for some military equipment, including lasers, radars and spy satellites.
The family grew rapidly in the cold war. Long before cobalt emerged as a battery material, nuclear tests in the 1950s showed that it was resistant to high temperatures. The blue metal was soon added to the alloys that make armour-penetrating munitions. Titanium—as strong as steel but 45% lighter—also emerged as an ideal weapons material. So did tungsten, which has the highest melting point of any metal and is vital for warheads.
Beyond their varied properties, this group of mighty minerals share certain family traits. The first is that they are rarely, if ever, found in pure form naturally. Rather, they are often a by-product of the refining of other metals. Gallium and germanium compounds, for example, are found in trace amounts in zinc ores. Vanadium occurs in more than 60 different minerals. Producing them is therefore costly, technical, energy-intensive and polluting.
The combination of concentrated production, complex refining and critical uses means trading happens under the radar. The volumes are too small, and transacting parties too few, for them to be sold on an exchange. Because there are no spot transactions, prices are not reported. Would-be buyers have to rely on estimates. These vary widely. Vanadium is relatively cheap: around $25 per kilogram. Hafnium might cost you $1,200 for the same amount.
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