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Characteristics of the material 38KH2N2M   ( 38H2N2M,   3822 ).

Material : 38KH2N2M   ( 38H2N2M,   3822 ) ( 38 )
Classification : Alloy structurall steel


Chemical composition in % of the material 38KH2N2M   ( 38H2N2M,   3822 ) .
C Si Mn Ni S P Cr Mo Cu
0.33 - 0.40.17 - 0.370.25 - 0.51.3 - 1.7max   0.025max   0.0251.3 - 1.70.2 - 0.3max   0.3


Temperature of critical points of the grade 38KH2N2M   ( 38H2N2M,   3822 ).
Ac1 = 753 ,      Ac3(Acm) = 790 ,       Ar3(Arcm) = 490 ,       Ar1 = 370 ,       Mn = 320


Mechanical properties under =20o of the material 38KH2N2M   ( 38H2N2M,   3822 ) .
Assortment Dimension Direct. s sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bar 25   1080 930 12 50780Guenching and drawing


    Brinell hardness of the material   38KH2N2M   ( 38H2N2M,   3822 )   (annealing) ,       HB 10 -1= 269   MPa


Physical properties of the material 38KH2N2M   ( 38H2N2M,   3822 ) .
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 2.13   38     322
100 2.06 11.9 37   490 398
200 1.94 12.5 35   502 482
300 1.8 13.1 35   523 592
400 1.74 13.3 33   532 740
500 1.64 13.8 32   565 910
600 1.57 14.1 30   590 1090
700 1.41 14.6 28   615 1300
800 1.29 11.8 28   670  
T E 10- 5 a 10 6 l r C R 10 9


Technological properties of the material 38KH2N2M   ( 38H2N2M,   3822 ) .
  Weldability: is not used.
 Flakes : predisposed
Temper brittleness: not 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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