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Characteristics for grade     08kp   ( 08кп )

      Grade :     08kp   ( 08кп )
      Substitute:   08
      Classification :   High quality structural carbon steel
      Equivalent grades:   Go here



Chemical composition in % for grade   08kp   ( 08кп )
C Si Mn Ni S P Cr Cu As
0.05 - 0.12max   0.030.25 - 0.5max   0.3max   0.04max   0.035max   0.1max   0.3max   0.08


Temperature of critical points for grade   08kp   ( 08кп ).
Ac1 = 732 ,      Ac3(Acm) = 874 ,       Ar3(Arcm) = 854 ,       Ar1 = 680


Mechanical properties under Т=20oС for grade   08kp   ( 08кп )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Sheet heat-treatment, GOST 4041-71 4 - 8   270-370  34    
Pipe, GOST 5005-82     390 350 10    
Pipe, GOST 10705-80     294 174 27    
Rolled stock, GOST 10702-78     370   8 60  
Steel cold-drawn , GOST 10702-78     314-412    60 Annealing
Strip, GOST 1577-93 6 - 60   290 175 35 60 Normalizing


    Brinell hardness for     08kp   ( 08кп )   ,     Sheet GOST 4041-71 HB 10 -1 = 100   MPa
    Brinell hardness for     08kp   ( 08кп )   ,     Rolled stock GOST 10702-78 HB 10 -1 = 115   MPa
    Brinell hardness for     08kp   ( 08кп )   ,     Rolled stock GOST 10702-78 HB 10 -1 = 131   MPa


Technological properties for grade   08kp   ( 08кп )
  Weldability: without limitations.
 Flakes : not predisposed
Temper brittleness: not predisposed


Physical properties for grade   08kp   ( 08кп )
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 2.03   63 7871   147
100 2.07 12.5 60 7846 482 178
200 1.82 13.4 56 7814 498 252
300 1.53 14 51 7781 514 341
400 1.41 14.5 47 7745 533 448
500   14.9 41 7708 555 575
600   15.1 37 7668 584 725
700   15.3 34 7628 626 898
800   14.7 30 7598 695 1073
900   12.7 27 7602 703 1124
1000   13.8     695  
T E 10- 5 a 10 6 l r C R 10 9


Equivalent steels for grade     08kp   ( 08кп )
Warning! Indicated both exact and nearest equivalents.
USAGermanyJapanFranceEnglandEuropeanItalySpainChinaSwedenBulgariaHungaryPolandRomaniaCzechiaFinlandAustriaAustralia
-DIN,WNrJIS AFNORBSEN UNIUNEGBSSBDSMSZPNSTASCSNSFSONORMAS
1008
1010
A619
A622
G10080
G10120
1.0322
1.0335
DC01
DC04
DC04G1
DD11
DD13
St12
St14
St22
StW24
USt3
USt4
SPCC
SPHE
SWRCH10R
SWRCH8R
3C
DC01
DD13
FB8
Fd4
FR8
XC6
040A10
1449-1HR
1HR
2HR
DC01
DD13
1.0330
1.0335
DC01
DC04
DD13
FeP01
FeP03
DC01
FeP13
AP13
DC01
DD13
08F
ML08
1147
08
DD11
DD13
ASZ2
08X
A1n
11304
11320
11321
11325
RACOLD01F
St02F
St02FK32
St02FK40
St02FK50
St02FK60
St02FK70
St24F
1008
CA1
CA2
CA3
CA4
HA1
HA3
HA4N


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

  08kp   ( 08кп ) - High quality structural carbon 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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