Database of Steel and Alloy (Marochnik)

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Characteristics of the material 38KHM   ( 38HM,   38 ).

Material : 38KHM   ( 38HM,   38 )
Classification : Alloy structurall steel


Chemical composition in % of the material 38KHM   ( 38HM,   38 ) .
C Si Mn Ni S P Cr Mo Cu
0.35 - 0.420.17 - 0.370.35 - 0.65max   0.3max   0.025max   0.0250.9 - 1.30.2 - 0.3max   0.3


Temperature of critical points of the grade 38KHM   ( 38HM,   38 ).
Ac1 = 758 ,      Ac3(Acm) = 805 ,       Ar3(Arcm) = 725 ,       Ar1 = 650


Mechanical properties under =20o of the material 38KHM   ( 38HM,   38 ) .
Assortment Dimension Direct. s sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bar 25   980 885 11 45690Guenching 850oC, oil, Drawing 600oC, air,


Physical properties of the material 38KHM   ( 38HM,   38 ) .
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 2.11   33     257
100 2.01 12.4 35   496 280
200 1.94 13.1 38   508 310
300 1.84 13.7 39   525 380
400 1.74 14.2 36   538 470
500 1.69 14.5 34   567 580
600 1.66 14.6 33   600 720
700 1.41 14.7 31   672 870
800 1.29 11.2 27   697 1060
T E 10- 5 a 10 6 l r C R 10 9



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]

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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