China will start limiting exports of critical metal tungsten this weekend, just as alternatives to Chinese suppliers of the ...

But even a king needs someone to keep him in check, and while steel can be used to make tools hard enough to cut itself, there’s something even better for the job: tungsten, or more specifically ...

Tungsten and tungsten alloys are heavy refractory metals or alloys with a very high melting point and high density. Pure tungsten is a steel-gray metal that with impurities is brittle and not very ...