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Metals -> Structural steel -> Alloy structurall steel

Characteristics of the material 50KHN   ( 50HN,   50 ).

Material : 50KHN   ( 50HN,   50 )
Substitute: 40, 60
Classification : Alloy structurall steel


Chemical composition in % of the material 50KHN   ( 50HN,   50 ) .
C Si Mn Ni S P Cr Cu
0.46 - 0.540.17 - 0.370.5 - 0.81 - 1.4max   0.035max   0.0350.45 - 0.75max   0.3


Temperature of critical points of the grade 50KHN   ( 50HN,   50 ).
Ac1 = 735 ,      Ac3(Acm) = 755 ,       Ar3(Arcm) = 690 ,       Ar1 = 660 ,       Mn = 300


Mechanical properties under =20o of the material 50KHN   ( 50HN,   50 ) .
Assortment Dimension Direct. s sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bar 25   1080 885 9 40490Guenching 820oC, water, Drawing 530oC, water,


    Brinell hardness of the material   50KHN   ( 50HN,   50 )   (annealing) ,       HB 10 -1= 207   MPa


Physical properties of the material 50KHN   ( 50HN,   50 ) .
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       7860    
100   11.8 43   500  
200     40   510  
300   12.3 39   560  
400   13.4 38   630  
500   14 37   700  
600     36   800  
700     32   910  
800     23   650  
900     24   610  
1000         700  
T E 10- 5 a 10 6 l r C R 10 9


Technological properties of the material 50KHN   ( 50HN,   50 ) .
  Weldability: is not used.
 Flakes : predisposed
Temper brittleness: 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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