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Metals -> Tool steel -> Tool steel for roller

Characteristics of the material 75KHM   ( 75HM,   75 ).

Material : 75KHM   ( 75HM,   75 )
Substitute: 92
Classification : Tool steel for roller


Chemical composition in % of the material 75KHM   ( 75HM,   75 ) .
C Si Mn Ni S P Cr Mo
0.7 - 0.80.2 - 0.60.2 - 0.7max   0.5max   0.03max   0.031.4 - 1.70.2 - 0.3


Mechanical properties under =20o of the material 75KHM   ( 75HM,   75 ) .
Assortment Dimension Direct. s sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Steel 500 longitudinal 750 430 19 41240Double normalizing and drawing


Physical properties of the material 75KHM   ( 75HM,   75 ) .
T E 10- 5 a 10 6 l r C R 10 9
Grade MPa 1/Grade Watt/(mGrade) kg/m3 J/(kgGrade) Ohmm
20       7900    
100     45   490  
200     41   500  
300     40   530  
400     39   570  
500     38   640  
600     37   750  
700     35   900  
800         700  
900         760  
1000         810  
T E 10- 5 a 10 6 l r C R 10 9


Technological properties of the material 75KHM   ( 75HM,   75 ) .
  Weldability: is not used.
 Flakes : weakly predisposed
Temper brittleness: not predisposed



Specification :
Mechanical properties :
s - 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/(mGrade)]
r - Density , [kg/m3]
C - Specific heat ( range 20o - T ), [J/(kgGrade)]
R - Electrical resistance , [Ohmm]

Weldability :
without limitations - welding is done without heating and subsequent heat treeting
limited weldability - welding is possible under heating up to 100-120 grade and subsequent heat treeting
hard weldability - obtaining the quality welding needs the additional operations:heating up to 200-300 grade; the heat treeting ia annealing

Database of steels and alloys (Marochnik) contains information about chemical composition and properties of 1500 steels and alloys (stainless steel, alloy steel, carbone steel, structural steel, tool steel, cast iron, aluminum alloy, titanium alloy, copper alloy, nickel alloy, magnesium alloy and others).
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