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Characteristics for grade     38KHS   ( 38ХС )

      Grade :     38KHS   ( 38ХС )
      Substitute:   40ХС
      Classification :   Alloy structurall steel
      Equivalent grades:   Go here



Chemical composition in % for grade   38KHS   ( 38ХС )
C Si Mn Ni S P Cr Cu
0.34 - 0.421 - 1.40.3 - 0.6max   0.3max   0.035max   0.0351.3 - 1.6max   0.3


Temperature of critical points for grade   38KHS   ( 38ХС ).
Ac1 = 763 ,      Ac3(Acm) = 810 ,       Ar3(Arcm) = 755 ,       Ar1 = 680 ,       Mn = 330


Mechanical properties under Т=20oС for grade   38KHS   ( 38ХС )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bar, GOST 4543-71 Ø 25   930 735 12 50690Guenching 900oC, water, Drawing 630oC, water,
Forging to 100   685 540 15 45590Guenching and drawing


    Brinell hardness for     38KHS   ( 38ХС )   (annealing) ,       GOST 4543-71 HB 10 -1 = 255   MPa


Technological properties for grade   38KHS   ( 38ХС )
  Weldability: hard weldability.
 Flakes : not predisposed
Temper brittleness: predisposed


Physical properties for grade   38KHS   ( 38ХС )
T E 10- 5 a 10 6 l r C R 10 9
Grade MPa 1/Grade Watt/(m·Grade) kg/m3 J/(kg·Grade) Ohm·m
20 2.11   38 7640   284
100 2.03 12.3 38   466 329
200 1.94 13.1 37   508 413
300 1.84 13.6 35   529 563
400 1.74 13.8 34   563 725
500 1.66 14.2 33   592 902
600 1.57 14.5 31   621 1060
700 1.39 14.7 29   634 1280
800 1.27 12.5 28   663  
T E 10- 5 a 10 6 l r C R 10 9


Equivalent steels for grade     38KHS   ( 38ХС )
Warning! Indicated both exact and nearest equivalents.
BulgariaPolandCzechia
BDSPNCSN
38ChS
37HS
14341

Types of delivery of grade   38KHS   ( 38ХС )
B03 - Metal forming treatment. Forgings
В22 - Graded and shaped rolling
B23 - Sheets and Strips
В32 - Graded and shaped rolling
В71 - Low-carbon steel wire


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]

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/(m·Grade)]
r - Density , [kg/m3]
C - Specific heat ( range 20o - T ), [J/(kg·Grade)]
R - Electrical resistance , [Ohm·m]

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

  38KHS   ( 38ХС ) - 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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