High-speed steel (HSS or HS) is a subset of tool steels, commonly used as cutting tool material.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 high-speed steel. At room temperature, in their generally recommended heat treatment, HSS grades generally display high hardness (above Rockwell hardness 60) and abrasion resistance (generally linked to tungsten and vanadium content often used in HSS) compared with common carbon and tool steels.

The main advantage of using HSS is its ability to retain its sharpness at high speeds. This means that tools made from HSS are much more effective at cutting through hard materials than traditional steel ones. As mentioned above, HSS also has higher wear resistance, so tools will remain sharper for longer before they need to be sharpened or replaced. Also, because HSS contains molybdenum and vanadium, it has superior corrosion resistance to regular carbon steel alloys.

High speed steel excels in hardness and abrasion resistance, with different grades trading toughness, hot hardness, or reduced brittleness for toughness. As a result, these alloys are widely used in industrial cutting tools such as tool bits, milling cutters, saw blades, drills, taps, broaches, and so on.
High speed steel tools typically retain a sharper edge for longer than other carbon steels, and the variety of grades and surface treatments available provide options for specialized applications. These products are used in a variety of applications ranging from woodworking to machining high-grade alloys.

Broadly, high speed steel excels in hardness and abrasion resistance, with different grades trading for toughness, hot hardness or reduced brittleness. As a result, these alloys see the most use in industrial cutting tools—tool bits, milling cutters, saw blades, drills, taps, broaches and more.

Tools made of high speed steel frequently keep a sharp edge for longer than other carbon steels, and the variety of grades and surface treatments available provide options for specialized applications. These products see use anywhere from woodworking to machining high-grade alloys.

Though not traditionally considered to be cutting tools, punches, dies and other components in progressive stamping can also be made from high speed steel. Additionally, the properties of high speed steels, particularly hardness and wear resistance, are desirable for hand tools such as chisels, files, blades for hand planes and kitchen and pocket knives.

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