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Characteristics for grade     St4kp   ( Ст4кп )



      Grade :     St4kp   ( Ст4кп )
      Classification :   Normal quality structural carbon steel
      Equivalent grades:   Go here



Chemical composition in % for grade   St4kp   ( Ст4кп )
C Si Mn Ni S P Cr N Cu As
0.18 - 0.27max   0.050.4 - 0.7max   0.3max   0.05max   0.04max   0.3max   0.008max   0.3max   0.08


Mechanical properties under Т=20oС for grade   St4kp   ( Ст4кп )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Pipe, GOST 10705-80     412 245 21    
Rolled stock, GOST 535-2005     400-510225-25522-25   


    Brinell hardness for     St4kp   ( Ст4кп )   ,       HB 10 -1 = 143   MPa


Technological properties for grade   St4kp   ( Ст4кп )
  Weldability: limited weldability.


Physical properties for grade   St4kp   ( Ст4кп )
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       7850    


Equivalent steels for grade     St4kp   ( Ст4кп )
Warning! Indicated both exact and nearest equivalents.
USAGermanyJapanFranceEnglandEuropeanItalyBelgiumSpainChinaSwedenBulgariaPolandRomaniaCzechiaInter
-DIN,WNrJIS AFNORBSEN UNINBNUNEGBSSBDSPNSTASCSNISO
A573
A573Gr.70
A611Gr.D
K03000
1.0144
Fe430D1
St4403
SM400A
SM400B
SM400C
E28-3
E28-4
4360-43C
43C
43D
Fe430D1FF
S275J2G3
S275N
1.0144
S275J2G3
S275JO
Fe430B
Fe430C(FN)
Fe430D(FF)
FE430D1FF
AE275D
Fe430D1FF
Q255
1411
1412
1414
BSt4kp
WSt4kp
St4SX
OL42.1
11423
E275-A
Fe430-A



Types of delivery of grade   St4kp   ( Ст4кп )
В20 - Classification, nomenclature and general norms
В22 - Graded and shaped rolling
B23 - Sheets and Strips
B24 - Ribbons
B42 - Rails: Pads, Pads, Crutches
В62 - Steel pipes and connecting parts to them


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

  St4kp   ( Ст4кп ) - Normal 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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