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Characteristics for grade     R9M4K8-MP   ( Р9М4К8-МП )



      Grade :   R9M4K8-MP   ( Р9М4К8-МП ) (   ДИ102-МП   )
      Classification :   High-speed steel
      Equivalent grades:     Is absent



Chemical composition in % for grade   R9M4K8-MP   ( Р9М4К8-МП )
C Si Mn Ni S P Cr Mo W V Co N Cu O
1.1 - 1.2max   0.6max   0.5max   0.4max   0.03max   0.033 - 3.63.8 - 4.38.5 - 9.52.3 - 2.77.5 - 8.50.02 - 0.06max   0.25max   0.02


    Brinell hardness for     R9M4K8-MP   ( Р9М4К8-МП )   (hot-rolled, annealing) ,     Bar GOST 28393-89 HB 10 -1 = 285   MPa



Types of delivery of grade   R9M4K8-MP   ( Р9М4К8-МП )
В32 - Graded and shaped rolling


Specification :
Mechanical properties :
sв - Tensile strength , [MPa]
sT - Yield stress, [MPa]
d5 - Specific elongation at fracture , [ % ]
y - Reduction of area , [ % ]
KCU - Impact strength , [ kJ / m2]
HB - Brinell hardness , [MPa]

Physical properties :
T - Test temperature , [Grade]
E - Young modulus , [MPa]
a - Coefficient of linear expansion (range 20o - T ) , [1/Grade]
l - Termal (heat) condition coefficient , [Watt/(m·Grade)]
r - Density , [kg/m3]
C - Specific heat ( range 20o - T ), [J/(kg·Grade)]
R - Electrical resistance , [Ohm·m]

  R9M4K8-MP   ( Р9М4К8-МП ) - High-speed steel: chemical composition, mechanical and physical properties, hardness
Database of steels and alloys (Marochnik) contains information about chemical composition and properties more then 3000 steels and alloys

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