Database of Steel and Alloy (Marochnik)

  Home     Steel and Alloy     Search     Equivalent Grades     GOST Standards     Grading     Contacts  
   
YOU HERE:   Steel and Alloy   ->   Structural steel

Characteristics for grade     40KH   ( 40Х )

      Grade :     40KH   ( 40Х )
      Substitute:   45Х, 38ХА, 40ХН, 40ХС, 40ХФ, 40ХР
      Classification :   Alloy structurall steel
      Equivalent grades:   Go here
Grade   40KH   ( 40Х ):   supplier   Auremo   www.auremo.biz
Sale:   Russia +7 (812) 680-16-77 ,   Germany +49 (208) 205-83-073,     info [a] auremo.org



Chemical composition in % for grade   40KH   ( 40Х )
C Si Mn Ni S P Cr Cu
0.36 - 0.440.17 - 0.370.5 - 0.8max   0.3max   0.035max   0.0350.8 - 1.1max   0.3


Temperature of critical points for grade   40KH   ( 40Х ).
Ac1 = 743 ,      Ac3(Acm) = 782 ,       Ar3(Arcm) = 730 ,       Ar1 = 693


Mechanical properties under Т=20oС for grade   40KH   ( 40Х )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Pipe, GOST 8731-87     657   9    
Pipe cooling strain, GOST 8733-74     618   14    
Bar, GOST 4543-71 Ø 25   980 785 10 45590Guenching 860oC, oil, Drawing 500oC, water,


    Brinell hardness for     40KH   ( 40Х )   (annealing) ,       GOST 4543-71 HB 10 -1 = 217   MPa
    Brinell hardness for     40KH   ( 40Х )   ,     Pipe GOST 8731-87 HB 10 -1 = 269   MPa
    Brinell hardness for     40KH   ( 40Х )   ,     Pipe GOST 8733-74 HB 10 -1 = 217   MPa
    Brinell hardness for     40KH   ( 40Х )   ,     Bar GOST 10702-78 HB 10 -1 = 179   MPa


Technological properties for grade   40KH   ( 40Х )
  Weldability: hard weldability.
 Flakes : predisposed
Temper brittleness: predisposed


Physical properties for grade   40KH   ( 40Х )
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 2.14     7820   210
100 2.11 11.9 46 7800 466 285
200 2.06 12.5 42.7 7770 508 346
300 2.03 13.2 42.3 7740 529 425
400 1.85 13.8 38.5 7700 563 528
500 1.76 14.1 35.6 7670 592 642
600 1.64 14.4 31.9 7630 622 780
700 1.43 14.6 28.8 7590 634 936
800 1.32   26 7610 664 1100
900     26.7 7560   1140
1000     28 7510   1170
1100     28.8 7470   120
1200       7430   1230
T E 10- 5 a 10 6 l r C R 10 9


Equivalent steels for grade     40KH   ( 40Х )
Warning! Indicated both exact and nearest equivalents.
USAGermanyJapanFranceEnglandEuropeanItalyBelgiumSpainChinaSwedenBulgariaHungaryPolandRomaniaCzechiaAustraliaSouth Korea
-DIN,WNrJIS AFNORBSEN UNINBNUNEGBSSBDSMSZPNSTASCSNASKS
5135
5140
5140H
5140RH
G51350
G51400
H51350
H51400
1.7034
1.7035
1.7045
37Cr4
41Cr4
41CrS4
42Cr4
SCr435
SCr435H
SCr440
SCr440H
37Cr4
38C4
38C4FF
41Cr4
42C4
42C4TS
37Cr4
41Cr4
530A36
530A40
530H36
530H40
530M40
1.7034
1.7035
1.7039
37Cr4
37Cr4KD
41Cr4
41Cr4KD
41CrS4
36CrMn4
36CrMn5
37Cr4
38Cr4KB
38CrMn4KB
41Cr4
41Cr4KB
37Cr4
41Cr4
45C4
37Cr4
38Cr4
38Cr4DF
41Cr4
41Cr4DF
42Cr4
F.1201
F.1202
F.1210
F.1211
35Cr
38CrA
40Cr
40CrA
40CrH
45Cr
45CrH
ML38CrA
ML40Cr
2245
37Cr4
40Ch
41Cr4
37Cr4
41Cr4
Cr2Z
Cr3Z
38HA
40H
40Cr10
40Cr10q
14140
5132H
5140
SCr435
SCr435H
SCr440
SCr440H

Types of delivery of grade   40KH   ( 40Х )
B03 - Metal forming treatment. Forgings
В22 - Graded and shaped rolling
B23 - Sheets and Strips
В32 - Graded and shaped rolling
B33 - Sheets and Strips
В62 - Steel pipes and connecting parts to them
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

  40KH   ( 40Х ) - 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

    ©   2003 - 2018         Database of Steel and Alloy (russian title is the Marochnik)
Administration of the Marochnik is not responsible for the content's use.
Previous address of this website was splav.kharkov.com
Рейтинг@Mail.ru