Bronze Brocs4-4-2,5

  • 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 БрОЦС4-4-2,5
    Designation GOST Latin BpOTsC4-4-2,5
    Transliteration BrOTsS4-4-25
    By chemical elements BaSnZnPb4-4-2,5

    Description

    Bronze Brocs4−4-of 2.5 is used: for the manufacture of tapes and bands used for gaskets, bushings and bearings; bushings and pads of automobiles and tractors.

    Standards

    Name Code Standards
    Tape В54 GOST 15885-77
    Non-ferrous metals, including rare, and their alloys В51 GOST 28873-90, GOST 5017-2006

    Chemical composition

    Standard S P Ni Fe Cu Al Zn Sn Sb Pb Bi Mg
    GOST 5017-2006 ≤0.007 ≤0.03 ≤0.3 ≤0.05 Rest ≤0.002 3-5 3-5 ≤0.002 1.5-3.5 ≤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 ≤ 0,20%.

    Mechanical properties

    Section, mm σU, MPa d5, % d10 HB, MPa
    Bronze in the delivery condition
    - 300-350 35-45 - 50-70
    - 550-650 2-4 - 160-170
    Ribbon (0,5-2,0 mm) and strip (of 1.58-3.0 mm) supplied according to GOST 15885-77
    ≥290 - ≥35 -
    390-490 - ≥10 -
    ≥540 - ≥5 -

    Description mechanical marks

    Name Description
    σU Limit short-term strength
    d5 Elongation after rupture
    d10 Elongation after rupture
    HB Brinell hardness number

    Physical characteristics

    Temperature Е, HPa r, kg/m3 l, W/(m · °C) R, Mr. · m
    20 75 8900 84 90

    A description of the physical symbols

    Name Description
    Е The normal elasticity modulus
    l Coefficient of thermal conductivity
    R UD. the resistivity