Steel 2

  • A4 steel
  • Steel 76F
  • 76KhSF steel
  • Steel 76C (M76C)
  • 78KhSF steel
  • Steel 90AF (E90AF)
  • Steel A1 (A0)
  • A2 steel
  • A3 steel
  • Steel 76VT (M76VT)
  • Steel wheel 1
  • Steel wheel 2
  • Steel wheel 3
  • Steel M75
  • Steel H50
  • OS Steel
  • PT70 steel
  • T60 steel
  • Steel 70 (M70)
  • Steel 2
  • Steel 3
  • 3Gps steel
  • Steel 4
  • Steel 54 (M54)
  • 5Gps steel
  • Steel 63 (K63)
  • Steel 68 (M68)
  • 76T steel
  • Steel 73B (M73B)
  • Steel 73T (M73T)
  • Steel 73C (M73C)
  • Steel 74 (M74)
  • Steel 74T (M74T)
  • Steel 74C (M74C)
  • Steel 76 (M76)
  • Steel 76B (M76B)

    • Designation

    Name The value
    Designation GOST Cyrillic 2
    Designation GOST Latin 2
    Transliteration 2
    By chemical elements 2

    Description

    2 steel is used: for the manufacture of tires freight, passenger and shunting locomotives, motor carriages and diesel trains, subway cars and tenders Railways of 1520 mm; tires for wheeled steam tram cars.

    Note

    Steel bandage.
    The steel must be subjected to secondary treatment by blowing nitrogen, argon or vacuum.

    Standards

    Name Code Standards
    Bandages. Wheels. Axis В41 GOST 398-96, GOST 3225-80, GOST 5000-83, GOST 5257-98, GOST Р 52366-2005, GOST 398-2010, TU 0943-050-01124328-96

    Chemical composition

    Standard C S P Mn Cr Si Ni Fe Cu V Mo
    GOST 398-96 0.57-0.65 ≤0.04 ≤0.035 0.6-0.9 - 0.22-0.45 - Rest - ≤0.15 -
    GOST 5257-98 0.57-0.67 ≤0.04 ≤0.035 0.5-0.9 - 0.2-0.45 - Rest - - -
    GOST 398-2010 0.57-0.67 ≤0.02 ≤0.03 0.6-0.9 ≤0.2 0.22-0.45 ≤0.25 Rest ≤0.3 ≤0.15 ≤0.08
    Fe is the basis.
    According to GOST 398-96, the content of molybdenum is not more than 0.08%, nickel is not more than 0.25%, chromium is not more than 0.20%, copper is not more than 0.30%. The total content of sulfur and phosphorus should not be more than 0.065%. In the finished tires, the maximum deviations in chemical composition are allowed in accordance with the requirements of GOST 380.
    According to GOST 5257-98, the content of nickel is not more than 0.30%, chromium is not more than 0.25%, copper is not more than 0.30%.
    According to GOST 398-2010 the total share of sulfur and phosphorus in steel should not exceed 0.040%. In the bandages, the maximum deviations in the chemical composition are permissible: carbon + 0.030 / -0.020, manganese + 0.050 / -0.030, silicon + 0.030 / -0.020, chromium +0.020, vanadium + 0.010%, phosphorus +0.0050% , in the sulfur +0.0050%. The mass fraction of hydrogen in liquid steel should not exceed 0.00020%.

    Mechanical properties

    Section, mm σU, MPa d5, % y, % KCU, kJ/m2 HB, MPa
    Bandages on 398-96 GOST, GOST 398-2010. Quenching with a separate heating + Vacation
    930-1110 ≥10 ≥14 ≥2450 269-321
    Bandages according to GOST 5257-98. Quenching with a separate heating + Vacation
    ≥900 ≥10 ≥14 - ≥250

    Description mechanical marks

    Name Description
    σU Limit short-term strength
    d5 Elongation after rupture
    y The relative narrowing
    KCU Toughness
    HB Brinell hardness number