Bronze Brof4-0,25

  • Bronze BrMcO7-3
  • Bronze БрОФ2-0,25
  • Bronze БрОФ4-0,25
  • Bronze БрОФ6,5-0,15
  • Bronze БрОФ6,5-0,4
  • Bronze БрОФ7-0,2
  • Bronze БрОФ8-0,3
  • Bronze БрОЦ4-3
  • Bronze БрОЦС4-4-2,5
  • Bronze БрОЦС4-4-4
  • Bronze БрХ0,3О0,3Цр0,1 (БрХОЦр0,3-0,3-0,1)

    • Designation

    Name The value
    Designation GOST Cyrillic БрОФ4-0,25
    Designation GOST Latin BpOF4-0,25
    Transliteration BrOF4-025
    By chemical elements BaSnP4-0,25

    Description

    Bronze Brof4−0,25 is used: for the manufacture of semi-finished tapes and tubes used in vehicle building and instrumentation; oval, round and flat-oval drawn tubes for the manufacture of the pressure springs.

    Standards

    Name Code Standards
    Tubes of non-ferrous metals and alloys В64 GOST 2622-75
    Non-ferrous metals, including rare, and their alloys В51 GOST 28873-90, GOST 5017-2006
    Tape В54 TU 48-21-174-72

    Chemical composition

    Standard S P Si Ni Fe Cu Al Zn Sn Sb Pb Bi Mg
    GOST 5017-2006 ≤0.007 0.2-0.3 ≤0.002 ≤0.2 ≤0.02 Rest ≤0.002 ≤0.3 3.5-4 ≤0.002 ≤0.02 ≤0.002 ≤0.007
    Cu is the basis.
    According to GOST 5017-2006, the total content of other impurities (not specified in the chemical composition) should be ≤ 0.10%.

    Mechanical properties

    Section, mm σU, MPa d10
    Pipe drawn (round, oval, flat-sided oval) in the delivery state according to GOST 2622-75
    ≥490 ≥3
    ≥340 ≥40

    Description mechanical marks

    Name Description
    σU Limit short-term strength
    d10 Elongation after rupture

    Physical characteristics

    Temperature Е, HPa r, kg/m3 l, W/(m · °C) R, Mr. · m
    20 100 8900 84 90

    A description of the physical symbols

    Name Description
    Е The normal elasticity modulus
    l Coefficient of thermal conductivity