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Characteristics of the material 38KHN3MF   ( 38HN3MF,   383 ).

Material : 38KHN3MF   ( 38HN3MF,   383 )
Classification : Alloy structurall steel


Chemical composition in % of the material 38KHN3MF   ( 38HN3MF,   383 ) .
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 of the grade 38KHN3MF   ( 38HN3MF,   383 ).
Ac1 = 725 ,      Ac3(Acm) = 775 ,       Ar3(Arcm) = 300 ,       Ar1 = 250 ,       Mn = 260


Mechanical properties under =20o of the material 38KHN3MF   ( 38HN3MF,   383 ) .
Assortment Dimension Direct. s sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bar 25   1180 1080 12 50780Guenching 850oC, oil, Drawing 600oC, air,


    Brinell hardness of the material   38KHN3MF   ( 38HN3MF,   383 )   (annealing) ,       HB 10 -1= 269   MPa


Physical properties of the material 38KHN3MF   ( 38HN3MF,   383 ) .
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 2.1   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


Technological properties of the material 38KHN3MF   ( 38HN3MF,   383 ) .
  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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