High Speed Steel (เหล็กแข็งไฮสปีด)

 

  02-295-1000
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 S290 PM

Bohler S290 PM: Equivalent* DEX80, HAP72

 

 Chemical composition (average %)

  C Si Mn Cr Mo V W Co
S290 PM  2.0 0.5 0.3  3.8  2.5 5.1  14.3  11.0

 

Material characteristic and use

Properties High speed steel produced by powder-metallurgy methods with highest red hardness,
compressive strength and wear resistance.
The PM technology imparts to the material also excellent toughness and 
machinability properties, e.g. highly satisfactory grindability.
   
Application Heavy-duty machining tools
Not only for the machining of steels but also for nonferrous metals such as nickel-
base and titanium alloys.
Tools used under extreme compressive stresses
e.g. precision blanking tools for high-strength materials
   ● shaping punches
   ● dies
   
Hardness after tempering 66-70 HRC
   
As-supplied condition Annealed: max. 350 HB

 

Physical characteristics

    Temperature
    20 ºC 100 ºC 200 ºC 300 ºC 400 ºC 500 ºC 600 ºC 700 ºC
Density (kg/dm3)  8.30              
Thermal conductivity W/(m·K)  19.0              
Specific heat J/(kg·K)  410              
Electrical resistivity Ohm·mm2/m  0.56              
Modulus of elasticity N/mm2  242x103              
Thermal expansion 10-6m/(m·K)    9.6  10.0  10.3  10.6  10.9 11.2   11.6

* Chemical composition is only reference and might not be the same

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