High Speed Steels

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BÖHLER high speed steels

For modern industrial production, in particular mass production, machining is one of the most important shaping and forming processes.  Almost all tools employed for this purpose are made from high speed steels.  In recent times, the use of high speed steels has also gained increasing importance for chipless shaping, e.g. for extrusion, blanking and punching tools, as well as moulding, as in semi-conductor IC tools.  With regard to chemical composition, distinction is made between W-, Mo- and W-Mo-alloyed steels grades which, depending on the dominant stress they will be exposed to contain different amounts of carbon, vanadium and cobalt.

The characteristic properties of all high speed steel grades include:

  • High working hardness
  • High wear resistance
  • Excellent toughness
  • High retention of hardness and red hardness

The alloying high speed steels

Carbon
forms carbides, increases wear resistance, is responsible for the basic matrix hardness.

Tungsten and molybdenum
improve red hardness, retention of hardness and high temperature strength of the matrix, form special carbides of great hardness.

Vanadium
forms special carbides of supreme hardness, increase high temperature wear resistance, retention of hardness and high temperature strength of the matrix.

Chromium
promotes depth of hardening, produces readily soluble carbides.

Cobalt
improves red hardness and retention of hardness of the matrix.

Aluminium
improves retention of hardness and red hardness.

Since it is possible to achieve specific properties by careful adjustment of these alloying elements, we are able to offer the most suitable high speed steel grade for virtually all kinds of application.





All high speed steels exhibit very good retention of hardness, and this property is enhanced further by the alloying of cobalt.



PM Grades  Description  Download 
PM steel, extremely high red hardness, wear resistance and compressive strength; heavy-duty machining tools, e.g. tools for non-ferrous metals such as Ni-based and Ti-based alloys, fine blanking toolings for high strength materials, cold work tools, pots and plungers for semi-conductor industry.
PM steel, excellent red hardness, wear resistance and compressive strength; heavy-duty machining tools, e.g. tools for non-ferrous metals such as Ni-based and Ti-based alloys, fine blanking toolings for high strength materials and high speed stamping, cold work tools, paper knives, excellent material for pots and plungers for semi-conductor industry.
PM steel, very high red hardness, wear resistance and compressive strength; heavy-duty machining tools, e.g. tools for non-ferrous metals such as Ni-based and Ti-based alloys, fine blanking toolings for high strength materials, cold work tools, IC moulds and inserts, pot and plungers for semi-conductor industry.
PM steel, very good red hardness, wear resistance and compressive strength; heavy-duty machining tools, e.g. tools for non-ferrous metals such as Ni-based and Ti-based alloys, fine blanking toolings for high strength materials, cold work tools, IC moulds and inserts, pot and plungers for semi-conductor industry.


Grades  Description  Download 
8% Co high speed steel with very high red hardness and compressive strength; milling cutters, twist drills, taps, broaching tools, punches, cold work tools, pot and plungers for semi-conductor industry.  Available in conventional grade.
Good red hardness and compressive strength; milling cutters, twist drills, reamers, taps, broaching tools, metal saws, paper knives, tube cutters, woodworking tools, punches, cold work tools, pot and plungers for semi-conductor industry.  Available in conventional grade.
5% Co high speed steel with high red hardness and compressive strength; milling cutters, twist drills, taps, broaching tools, punches, cold work tools, pot and plungers for semi-conductor industry.  Available in conventional grade.


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HSS in semi-conductor applications