Tungsten

Model No.: Product Origin: Brand Name: Price Terms: Payment Terms: Certification: Description:Tungsten,also called wolfram is a chemical element that has the symbol W (New Latin: wolframium) and atomic number 74.

A very hard, heavy, steel-gray to white transition metal, tungsten is found in several ores including wolframite and scheelite and is remarkable for its robust physical properties, especially the fact that it has a higher melting point than any other non-alloy in existence.

The pure form is used mainly in electrical applications but its many compounds and alloys are widely used in many applications (most notably in light bulb filaments, and as both the filament and target in most X-ray tubes and in superalloys).Notable characteristicsPure tungsten is steel-gray to tin-white and is a hard metal.

Tungsten can be cut with a hacksaw when it is very pure (it is brittle and hard to work when impure) and is otherwise worked by forging, drawing, or extruding. This element has the highest melting point (3422 °C) (6192 °F), lowest vapor pressure and the highest tensile strength at temperatures above 1650 °C (3000 °F) of all metals.

Its corrosion resistance is excellent and it can only be attacked slightly by most mineral acids. Tungsten metal forms a protective oxide when exposed to air but can be oxidized at high temperature. Steel alloyed with small quantities of tungsten greatly increases in toughness.