High Speed Steel Composition Properties And Uses

To qualify as a high speed steel the chemical composition must meet certain minimum requirements which are defined in the astm a600 specification for high speed tool steels.

High speed steel composition properties and uses.

The lowest alloy grades m50 and m52 high speed steels are properly known as intermediate high speed steels because of their lower alloy contents. Any steel with a carbon content of 0 55 percent or higher or about one part in 180 is considered high carbon steel. And there are so many types of high speed steel due to different chemical composition. Cw6mo5 cr4v3 it is mo series high speed steel with high carbon and high vanadium.

High speed steel hss or hs is a subset of tool steels commonly used as cutting tool material. But it is used widely in the industry due to its great properties. It is often used in power saw blades and drill bits it is superior to the older high carbon steel tools used extensively through the 1940s in that it can withstand higher temperatures without losing its temper hardness this property allows hss to cut faster than high carbon steel hence the name. Different applications have resulted in the development of several variations on this composition with a w content ranging from 22 wt for increased red hardness and a v content up to 5 wt for greater resistance to abrasive wear.

Wear resistance and other properties of the high speed tool steels. Increasing the silicon content from 0 15 to 0 45 gives a slight increase in maximum attainable tempered hardness and has some influence on carbide morphology although. The influence of silicon on high speed tool steel up to about 1 0 o is slight. For extrusion blanking and punching tools.

Pushing this content past 2 percent makes the result extremely brittle and of limited use although this is how cast iron products e g wood stoves cookware are made. The use of high speed steels has also gained increasing importance for chipless shaping eg. Both of these properties enable hss tools to cut faster hence the name high speed and to be used for longer periods. On the base of w6m05cr4 v3 to improve its average carbon content from 1 05 to 1 20.

When used in tools high speed steel operates at a very low thermal expansion rate of 9 7 microns per meter per degree celsius. And also improve the vanadium content to make its wear resistance get better. All high speed steel chemical composition. The earliest known high speed steels were tungsten based 18 wt w 4 wt cr 1 wt v steel being the best known.

The following table shows the chemical composition of m2 molybdenum high speed tool steels. This article will provide an overview of m2 molybdenum high speed tool steel which has high carbon content and better wear resistance than m1 molybdenum high speed tool steel.