Polished tungsten rod is one of the rare metals, and because tungsten is an important strategic material, it was called "heavy stone" in ancient times. The content of tungsten in the earth's crust is about 0.001%. There are 20 kinds of tungsten-bearing minerals discovered so far. The tungsten rod after smelting is a silver-white lustrous metal with a very high melting point and great hardness. Tungsten rod is a rare high melting point metal.
Polished tungsten rods are silver-white metal with a steel-like appearance. Tungsten rods have a high melting point, low vapor pressure, and low evaporation rate. Tungsten has relatively stable chemical properties, does not react with air and water at room temperature, and is insoluble in hydrochloric acid, sulfuric acid, nitric acid, and alkali solutions. At high temperatures, it can combine with chlorine, bromine, iodine, carbon, nitrogen, sulfur, etc., but not with tungsten hydride. Most of them are used to produce special steel.
The widely used high-speed steel contains 9-24% tungsten, 3.8%-4.6% chromium, 1%-5% vanadium, 4%-7% cobalt, 0.7%-1.5% carbon. The characteristic of high-speed steel is that it can be quenched automatically at a high tempering temperature (700-800℃) in the air, so it maintains high hardness and wears resistance until 600-650℃. Tungsten steel in alloy tool steel contains 0.8%-1.2% tungsten; chromium-tungsten silicon steel contains 2%-2.7% tungsten; chromium-tungsten steel contains 2%-9% tungsten; chromium-tungsten-manganese steel contains 0.5% - 1.6% tungsten. Tungsten-containing steel is often used to manufacture tools on various equipment: such as drill bits, milling cutters, wire drawing dies, air 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.
The polished tungsten rods produced by Baoji Yusheng Metal Technology Co., Ltd. are all made of high-quality tungsten powder. We pay attention to the control of product quality, so you can buy with confidence.
