Database of Steel and Alloy (Marochnik)

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Metals -> Structural steel -> Alloy structurall steel

Characteristics of the material 20KHF   ( 20HF,   20 ).

Material : 20KHF   ( 20HF,   20 )
Classification : Alloy structurall steel


Chemical composition in % of the material 20KHF   ( 20HF,   20 ) .
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 of the grade 20KHF   ( 20HF,   20 ).
Ac1 = 768 ,      Ac3(Acm) = 840


    Brinell hardness of the material   20KHF   ( 20HF,   20 )   (hot-rolled, annealing) ,       HB 10 -1= 170   MPa


Physical properties of the material 20KHF   ( 20HF,   20 ) .
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            
100   12        
200   12.5        
300            
400   13        
500   13.7        
T E 10- 5 a 10 6 l r C R 10 9


Technological properties of the material 20KHF   ( 20HF,   20 ) .
 Flakes : weakly predisposed
Temper brittleness: weakly predisposed



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/(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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