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Characteristics for grade     20KHF   ( 20ХФ )

      Grade :     20KHF   ( 20ХФ )
      Classification :   Alloy structurall steel
      Equivalent grades:   Go here



Chemical composition in % for grade   20KHF   ( 20ХФ )
C Si Mn Ni S P Cr V Cu
0.17 - 0.23max   0.20.5 - 0.8max   0.3max   0.035max   0.0350.8 - 1.10.1 - 0.2max   0.3


Temperature of critical points for grade   20KHF   ( 20ХФ ).
Ac1 = 768 ,      Ac3(Acm) = 840


    Brinell hardness for     20KHF   ( 20ХФ )   (hot-rolled, annealing) ,       HB 10 -1 = 170   MPa


Technological properties for grade   20KHF   ( 20ХФ )
 Flakes : weakly predisposed
Temper brittleness: weakly predisposed


Physical properties for grade   20KHF   ( 20ХФ )
T E 10- 5 a 10 6 l r C R 10 9
Grade MPa 1/Grade Watt/(m·Grade) kg/m3 J/(kg·Grade) Ohm·m
20            
100   12        
200   12.5        
300            
400   13        
500   13.7        
T E 10- 5 a 10 6 l r C R 10 9


Equivalent steels for grade     20KHF   ( 20ХФ )
Warning! Indicated both exact and nearest equivalents.
USAGermany
-DIN,WNr
6120
22CrV4


Specification :

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]

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

  20KHF   ( 20ХФ ) - Alloy structurall 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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