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Characteristics for grade     45KHN   ( 45ХН )

      Grade :     45KHN   ( 45ХН )
      Substitute:   40ХН
      Classification :   Alloy structurall steel
      Equivalent grades:   Go here



Chemical composition in % for grade   45KHN   ( 45ХН )
C Si Mn Ni S P Cr Cu
0.41 - 0.490.17 - 0.370.5 - 0.81 - 1.4max   0.035max   0.0350.45 - 0.75max   0.3


Temperature of critical points for grade   45KHN   ( 45ХН ).
Ac1 = 750 ,      Ac3(Acm) = 790 ,       Mn = 310


Mechanical properties under Т=20oС for grade   45KHN   ( 45ХН )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bar, GOST 4543-71 Ø 25   1030 835 10 45690Guenching and drawing


    Brinell hardness for     45KHN   ( 45ХН )   (annealing) ,       GOST 4543-71 HB 10 -1 = 207   MPa


Technological properties for grade   45KHN   ( 45ХН )
  Weldability: hard weldability.
 Flakes : predisposed
Temper brittleness: predisposed


Physical properties for grade   45KHN   ( 45ХН )
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       7820    
100   11.8 45      
200   12.3 43      
300     41      
400   13.4 40      
T E 10- 5 a 10 6 l r C R 10 9


Equivalent steels for grade     45KHN   ( 45ХН )
Warning! Indicated both exact and nearest equivalents.
USAJapanBulgariaPoland
-JIS BDSPN
3145
SNC236
45ChN
45HN

Types of delivery of grade   45KHN   ( 45ХН )
В22 - Graded and shaped rolling
B23 - Sheets and Strips
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]

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

  45KHN   ( 45ХН ) - 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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