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Characteristics of the material 38KH2NM   ( 38H2NM,   38Х2НМ ).

Material : 38KH2NM   ( 38H2NM,   38Х2НМ )
Substitute: 34ХН1М, 40ХН2МА
Classification : Alloy structurall steel


Chemical composition in % of the material 38KH2NM   ( 38H2NM,   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 of the material 38KH2NM   ( 38H2NM,   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 of the material   38KH2NM   ( 38H2NM,   38Х2НМ )   (normalize) ,       HB 10 -1= 207 - 235   MPa
    Brinell hardness of the material   38KH2NM   ( 38H2NM,   38Х2НМ )   (quenching, tempering) ,       HB 10 -1= 237 - 321   MPa


Technological properties of the material 38KH2NM   ( 38H2NM,   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

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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