What is the difference between steel and high-speed steel?
Tungsten is a kind of high speed steel was non alloy steel containing tungsten before, now use less, there are people on the use of power tools. Before the steel generally used for ordinary tool making hand taps, drills, saws and cutting speed is relatively low, the hardness is about 60~63HRC. High speed tool steel is now divided into low alloy, high performance and other types, widely used in the manufacture of various cutting tools.
In alloy steel series can't seem to find what it is, "tungsten steel" are a class of materials called hard alloy tungsten steel, this is a commonly known.
Tungsten is very high hardness of the metal material, is widely used in industry requires high hardness materials in bit place. But the price is extremely expensive, so an eraser will be 100 meters high steel prices also rose, recently.
High speed steel: all metal cutting is done with high carbon steel at once. This grade of steel shows high hardness, but tends to soften very quickly when heated. The addition of tungsten and chromium to the cutting steel makes it more resistant to heat when it is heated, thereby enabling a significant increase in cutting speed. These steels are called high speed steels. Other types of tool steels are less important for cutting purposes than this class. HRC66-69
