Bronze БрА9Ж4 (Brazh9-4)

Designation

Name The value
Designation GOST Cyrillic БрА9Ж4
Designation GOST Latin BpA9Zh4
Transliteration BrA9G4
By chemical elements BaAl9Fe4
Name The value
Designation GOST Cyrillic БрАЖ9-4
Designation GOST Latin BpAZh9-4
Transliteration BrAG9-4
By chemical elements BaAlFe9-4

Description

Bronze БрА9Ж4 used: for the manufacture of semi-finished products (tapes, strips, rods and wires); gears, bushings, valve seats and aircraft; castings in massive detail in the earth General engineering.

Note

Bronze is corrosion resistant, has high mechanical properties and good sliding properties.
Analogue of bronze Brazh9−4 at the CMEA 377−76 is bronze CuAl9Fe4.

Standards

Name Code Standards
Bars В55 GOST 1628-78, OST 4.021.021-92
Non-ferrous metals, including rare, and their alloys В51 GOST 18175-78, GOST 28873-90, OST 4.021.009-92, TU 48-21-642-79
Tubes of non-ferrous metals and alloys В64 TU 48-21-39-79

Chemical composition

Standard P Mn Si Fe Cu Al Zn Sn Pb
GOST 18175-78 ≤0.01 ≤0.5 ≤0.1 2-4 Rest 8-10 ≤1 ≤0.1 ≤0.01
Cu is the basis.
According to GOST 18175-78, the total mass fraction of normalized impurities is ≤ 1.70%. As agreed by the manufacturer with the consumer, the content of impurities of arsenic and antimony can be normalized. The mass fraction of nickel is allowed up to 0.50% without taking it into account in the total amount of impurities.

Mechanical properties

Section, mm σU, MPa d5, % d10 HB, MPa
Round bars supplied according to GOST 1628-78. 4.021.021-92 (longitudinal samples)
16-160 ≥540 - ≥15 110-180
Rolled steel in delivery condition (longitudinal samples)
400-500 35-45 - 100-120
500-700 4-6 - -

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 1106 7600 586 123

A description of the physical symbols

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