2014 Annual Report on Tungsten Market
2015-07-16 14:16:55
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As a rare metal, tungsten is an important strategic material.Asian Metal Copyright Very pure tungsten can be cut with a hacksaw it is brittle and hard to work when pure.Asian Metal Copyright World tungsten reserves are estimated to be 7 million tons, of which about 30% are in the form of scheelite minerals and 70% are in wolframite-group minerals.Asian Metal Copyright It has excellent corrosion resistance and is attacked only slightly by most mineral acids.Asian Metal Copyright There are more than ten kinds of tungsten ores with wolframite and scheelite being the two major types in China.Asian Metal Copyright The metal forms a protective oxide layer when exposed to air but can be oxidized at high temperature.Asian Metal Copyright Pure tungsten is a steel-gray to tin-white metal.Asian Metal Copyright The toughness of steel can be greatly increased when it is alloyed with small quantities of tungsten.Asian Metal Copyright Very pure tungsten can be cut with a hacksaw (it is brittle and hard to work when pure).Asian Metal Copyright Tungsten has the highest melting point 3415℃, lowest vapor pressure of all metals and highest tensile strength at the temperature of 1650°C.Asian Metal Copyright The processing methods of tungsten include forging, drawing and extruding.Asian Metal Copyright Tungsten has the highest melting point 3415℃, lowest vapor pressure of all metals and highest tensile strength at the temperature of 1650°C.Asian Metal Copyright Tungsten has the highest melting point (3415℃), lowest vapor pressure of all metals and highest tensile strength at the temperature of 1650°C.Asian Metal Copyright The processing methods of tungsten include forging, drawing and extruding.Asian Metal Copyright It has excellent corrosion resistance and is attacked only slightly by most mineral acids.Asian Metal Copyright Very pure tungsten can be cut with a hacksaw it is brittle and hard to work when pure.Asian Metal Copyright The metal forms a protective oxide layer when exposed to air but can be oxidized at high temperature.Asian Metal Copyright Pure tungsten is a steel-gray to tin-white metal.Asian Metal Copyright The toughness of steel can be greatly increased when it is alloyed with small quantities of tungsten.
.Asian Metal Copyright The processing methods of tungsten include forging, drawing and extrudingAsian Metal Copyright
