When I grow up, I'm going to be used in fireworks! Right now I'm in seawater, waiting to be harvested, but soon they'll electrolyze me and get one whole pound of me from every one hundred gallons! Since I'm only two-thirds as dense as aluminum, I'm often cast, forged, and welded. I'm used in alloys, mostly, with aluminum and zinc or with manganese. I was first used back in 1910, in Germany for World War II! I was used for airplane parts, like fuselages, parts of the engine, or wheels. Now, I'm used in jet engine parts, rockets, missiles, portable power tools, cameras, other optical instruments, and even luggage frames! I'm used in incendiary bombs, signals, and flares, too. I also help prevent iron and steel from corroding in things like pipelines. One day, I'm hoping I'll be part of a Fourth Of July celebration!