Steel St3kp (ВСт3кп)

  • Steel St3kp (VSt3kp)
  • Steel St6sp (VSt6sp)
  • Steel St6ps (VSt6ps)
  • Steel St5sp
  • St5ps steel
  • St5Gps steel
  • Steel St4sp (VSt4sp)
  • Steel St4ps (VSt4ps)
  • Steel St4kp (VSt4kp)
  • Steel St3sp (VSt3sp)
  • Steel St3ps (VSt3ps)
  • Steel St3GSp (VSt3GSp)
  • Steel St3Gps (VSt3Gps)
  • Steel St2sp (VSt2sp)
  • Steel St2ps (VSt2ps)
  • Steel St2kp (VSt2kp)
  • Steel St1sp
  • St1ps steel
  • Steel St1kp
  • Steel St0

    • Designation

    Name The value
    Designation GOST Cyrillic Ст3кп
    Designation GOST Latin Ct3kp
    Transliteration St3kp
    By chemical elements 3
    Name The value
    Designation GOST Cyrillic ВСт3кп
    Designation GOST Latin BCt3kp
    Transliteration VSt3kp
    By chemical elements 3

    Description

    St3kp steel is used: for the manufacture of expanded metal sheets, lightly loaded elements and nesvorny welded structures and components operating at temperatures from -40 °C to +400 °C; the profiles used in the railcar industry; forgings seniam to 300 mm. strength classes KP 175, KP 195; hot pan and C-shaped profiles for agricultural machinery; corrugated steel rhombic and point for shipbuilding; profile housing final drive of the tractor; welded pipes for the manufacture of parts and structures in motovelotehnika; hot-rolled steel sheets with one-sided rhombic and lenticular corrugated; two-headed rails, t-type P5, is designed for ground and suspended tracks; steel bent closed welded square and rectangular sections, intended for use in agricultural machinery, tractor and other sectors of the economy; crutches accuracy class, designed for fastening of rails to wooden sleepers and bars.

    Note

    The degree of deoxidation — KP.

    Standards

    Name Code Standards
    Tape В34 GOST 19851-74
    Steel pipes and fittings to them В62 GOST 3262-75, GOST 8696-74, GOST 10704-91, GOST 10705-80, GOST 10706-76, GOST 10707-80, GOST 12132-66, TU 14-3-1160-83, TU 14-3-1428-86, TU 14-3Р-56-2001, TU 1373-013-02949352-2003
    Tape В24 GOST 3560-73, GOST 6009-74, STP М309-74
    Classification, nomenclature and General rules В20 GOST 380-2005
    Bars and shapes В22 GOST 5267.0-90, GOST 5422-73, GOST 5781-82, GOST 7511-73, GOST 8239-89, GOST 8240-97, GOST 8278-83, GOST 8281-80, GOST 8282-83, GOST 8283-93, GOST 8509-93, GOST 8510-86, GOST 9234-74, GOST 10551-75, GOST 11474-76, GOST 12492.1-90, GOST 12492.13-90, GOST 12492.14-90, GOST 19240-73, GOST 19425-74, GOST 19771-93, GOST 19772-93, GOST 25577-83, GOST 30565-98, GOST 535-2005, GOST 30136-95, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006, OST 5.9086-85, OST 5.9087-84, TU 14-2-341-78, TU 14-2-949-91, TU 14-1-5283-94, TU 14-1-5254-94
    Rails. Lining. Lining. Crutches В42 GOST 5812-82, GOST 8142-89, GOST 16277-93
    Sheets and strips В23 GOST 82-70, GOST 8568-77, GOST 14637-89, GOST 14918-80, GOST 16523-97, GOST 19903-74, GOST 16523-89, GOST 16523-70, GOST 103-2006, GOST 19903-90, OST 5.9094-85, TU 36.26.11-5-89, TU 14-1-3023-80, STP М324-90
    Processing of metals by pressure. Forgings В03 GOST 8479-70, OST 5Р.9125-84, ST ЦКБА 010-2004
    Blanks. Of the workpiece. Slabs В31 OST 3-1686-90, TU 14-1-4944-90
    Welding and cutting metals. Soldering, riveting В05 OST 36-58-81
    Sheets and strips В33 TU 14-1-3579-83, TU 14-1-4431-88
    Bars and shapes В32 TU 14-11-245-88, TU 14-1-1271-75, TU 14-136-367-2008

    Chemical composition

    Standard C S P Mn Cr Si Ni Fe Cu N As
    GOST 380-2005 0.14-0.22 ≤0.05 ≤0.04 0.3-0.6 ≤0.3 ≤0.05 ≤0.3 Rest ≤0.3 ≤0.012 ≤0.08
    Fe is the basis.
    The nitrogen content is indicated for steel smelted in electric furnaces. In open-hearth and converter steels, the content of N≤0.010%.

    Mechanical properties

    Section, mm sT|s0,2, MPa σU, MPa d5, % d4 y, % KCU, kJ/m2 HB, MPa
    Longitudinal electric-welded pipes (Dy=10-530 mm) in the delivery condition. Listed marsvolta base metal
    - ≥225 ≥372 ≥22 - - - -
    Forgings. Normalization
    100-300 ≥175 ≥355 ≥24 - ≥50 ≥590 101-143
    100 ≥175 ≥355 ≥28 - ≥55 ≥640 101-143
    100-300 ≥195 ≥390 ≥23 - ≥50 ≥540 111-156
    100 ≥195 ≥390 ≥26 - ≥55 ≥590 111-156
    The hot rolled plate, long products and fittings as supplied
    ≤20 ≥235 360-460 ≥27 - - - -
    20-40 ≥225 360-460 ≥26 - - - -
    40-100 ≥215 360-460 ≥24 - - - -
    100 ≥195 360-460 ≥24 - - - -
    Hot-rolled sheet in the delivery condition. Group strength ОК360В
    ≤2 ≥235 360-530 - ≥20 - - -
    2-3.9 ≥235 360-530 - ≥22 - - -
    Cold-rolled sheet in the delivery condition. Group strength ОК360В
    ≤2 ≥235 360-530 - ≥22 - - -
    2-3.9 ≥235 360-530 - ≥24 - - -
    Sheets with a thickness of 12 mm delivery condition (transverse specimens)
    - ≥205 ≥385 ≥37 - ≥60 - -
    - ≥190 ≥370 ≥27 - ≥59 - -
    - ≥175 ≥430 ≥21 - ≥51 - -
    - ≥160 ≥450 ≥23 - ≥49 - -
    - ≥150 ≥395 ≥35 - ≥62 - -

    Description mechanical marks

    Name Description
    sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
    σU Limit short-term strength
    d5 Elongation after rupture
    d4 Elongation after rupture
    y The relative narrowing
    KCU Toughness
    HB Brinell hardness number

    Physical characteristics

    Temperature Е, HPa
    700 153

    A description of the physical symbols

    Name Description
    Е The normal elasticity modulus
    r Density
    l Coefficient of thermal conductivity
    R UD. the resistivity
    a The coefficient of linear expansion

    Technological properties

    Name The value
    Weldability Welded without restriction; welding methods: SMAW, ADS submerged arc and gas protection electroslag welding, the CCC. For thickness of more than 36 mm recommended heating and subsequent heat treatment.
    Склонность к отпускной хрупкости tend not
    The temperature of forging Beginning - 1300 °C, the end - 750 °C. air Cooling.
    Flock-sensitive sensitivity not sensitive
    Machinability In the hot rolled condition when blower SB 124 and HB=400 MPa Kn TV.SPL.=1.8 Kn b.St.=1.6