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Characteristics for grade     38KH2NM   ( 38Х2НМ )

      Grade :     38KH2NM   ( 38Х2НМ )
      Substitute:   34ХН1М, 40ХН2МА
      Classification :   Alloy structurall steel
      Equivalent grades:     Is absent



Chemical composition in % for grade   38KH2NM   ( 38Х2НМ )
C Si Mn Ni S P Cr Mo
0.32 - 0.420.17 - 0.370.5 - 0.80.6 - 0.9max   0.03max   0.031.8 - 2.30.2 - 0.3


Mechanical properties under Т=20oС for grade   38KH2NM   ( 38Х2НМ )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Forging to 300   830 680 12 38500Guenching 850 - 870oC,Drawing 590 - 620oC,
Forging 300 - 500   740 580 12 35450Guenching 850 - 870oC,Drawing 590 - 620oC,
Forging 500 - 800   700 530 10 30400Guenching 850 - 870oC,Drawing 590 - 620oC,


    Brinell hardness for     38KH2NM   ( 38Х2НМ )   (normalize) ,       HB 10 -1 = 207 - 235   MPa
    Brinell hardness for     38KH2NM   ( 38Х2НМ )   (quenching, tempering) ,       HB 10 -1 = 237 - 321   MPa


Technological properties for grade   38KH2NM   ( 38Х2НМ )
 Flakes : predisposed
Temper brittleness: predisposed


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]

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

  38KH2NM   ( 38Х2НМ ) - 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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