日本是一个镁及镁合金净进口国家,到1994年日本国内仅存的一家金属镁厂停止了生产。 2000年日本镁锭进口量为38221吨,其中从中国进口数量为305496吨,占进口量80%,多为镁锭,从挪威进口5828吨,多为镁合金。 日本镁的消费用于铝合金的添加剂占到消费总量66％, Japan is a net importer of magnesium and magnesium alloys. By 1994, the only remaining magnesium metal plant in Japan stopped production. In 2000, the import volume of magnesium ingots in Japan was 38,221 tons, of which 305,496 tons were imported from China, accounting for 80% of the import volume, mostly magnesium ingots, 5828 tons imported from Norway, mostly magnesium alloys. The consumption of magnesium in Japan accounts for 66% of the total consumption of aluminum alloys.