Basic uses: About 50% of the tungsten ore mined in the world is used for the smelting of high-quality steel, about 35% is used to produce hard steel, about 10% is used to make tungsten wire, and about 5% is used for other purposes. Tungsten can be used to manufacture guns, rocket propulsion nozzles, armor-piercing bullets, metal cutting blades, drill bits, superhard molds, wire drawing dies, etc., tungsten is widely used, involving mining, metallurgy, machinery, construction, transportation, electronics, chemical industry, light industry, textile, military industry, aerospace, science and technology, various industrial fields.
Tungsten is widely used in modern technology in the state of pure metal and in the state of alloy, the most important of which are alloy steel, tungsten carbide-based cemented carbide, wear-resistant alloy and strong heat alloy. Tungsten is mainly used in the following industrial fields:
Iron and steel industry: tungsten is mostly used in the production of special steels. The widely used high-speed steel contains 9%-24% tungsten, 3.8%-4.6% chromium, 1%-5% vanadium, 4%-7% cobalt, and 0.7%-1.5% carbon. HSS is characterized by its automatic quenching at a high tempering temperature (700-800°C) in the air, so it retains high hardness and wear resistance until 600-650°C. Tungsten steel contains 0.8%-1.2% tungsten, chrome-tungsten silicon steel contains 2%-2.7% tungsten, chromium-tungsten steel contains 2%-9% tungsten, and chrome-tungsten manganese steel contains 0.5%-1.6% tungsten. Tungsten-containing steel is used in the manufacture of various tools: such as drills, milling cutters, drawing dies, female and male molds, air support tools and other parts. Tungsten magnet steel is a permanent magnet steel containing 5.2%-6.2% tungsten, 0.68%-0.78% carbon, and 0.3%-0.5% chromium. Tungsten cobalt magnets contain 11.5%-14.5% tungsten, 5.5%-6.5% molybdenum, 11.5%-12.5% cobalt hard magnetic materials. They have high magnetization and coercivity.