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Characteristics for grade     38KHN3MFА   ( 38ХН3МФА )

      Grade :     38KHN3MFА   ( 38ХН3МФА )
      Classification :   Alloy structurall steel
      Equivalent grades:   Go here



Chemical composition in % for grade   38KHN3MFА   ( 38ХН3МФА )
C Si Mn Ni S P Cr Mo V Cu
0.33 - 0.40.17 - 0.370.25 - 0.53 - 3.5max   0.025max   0.0251.2 - 1.50.35 - 0.450.1 - 0.18max   0.3


Temperature of critical points for grade   38KHN3MFА   ( 38ХН3МФА ).
Ac1 = 725 ,      Ac3(Acm) = 775 ,       Ar3(Arcm) = 300 ,       Ar1 = 250 ,       Mn = 260


Mechanical properties under Т=20oС for grade   38KHN3MFА   ( 38ХН3МФА )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bar, GOST 4543-71 Ø 25   1180 1080 12 50780Guenching 850oC, oil, Drawing 600oC, air,


    Brinell hardness for     38KHN3MFА   ( 38ХН3МФА )   (annealing) ,       GOST 4543-71 HB 10 -1 = 269   MPa


Technological properties for grade   38KHN3MFА   ( 38ХН3МФА )
  Weldability: is not used.
 Flakes : predisposed
Temper brittleness: not predisposed


Physical properties for grade   38KHN3MFА   ( 38ХН3МФА )
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 2.1   34 7900   300
100 2.03 12 34   496 321
200 1.97 12.5 34   508 365
300 1.9 12.9 33   525 437
400 1.84 13.3 32   538 516
500 1.76 13.6 32   567 613
600 1.7 13.8 30   601 750
700 1.54 13.8 29   672 897
800 1.37 10.7 28   697 1080
T E 10- 5 a 10 6 l r C R 10 9


Equivalent steels for grade     38KHN3MFА   ( 38ХН3МФА )
Warning! Indicated both exact and nearest equivalents.
Germany
DIN,WNr
34NiCrMoV14-5
35NiCrMoV12-5


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

  38KHN3MFА   ( 38ХН3МФА ) - 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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