Bronze Bra5

Designation

Name The value
Designation GOST Cyrillic БрА5
Designation GOST Latin BpA5
Transliteration BrA5
By chemical elements BaAl5

Description

Bronze Bra5 used: for the manufacture of pipes; coins; parts operating in sea water; parts for chemical engineering.

Note

Bronze corrosion resistant, heat resistant, abrasion resistant. Well deformed in cold and hot condition.
Analog bronze Bra5 at CMEA 377−76 is bronze CuAl5.

Standards

Name Code Standards
Non-ferrous metals, including rare, and their alloys В51 GOST 18175-78, GOST 28873-90
Tubes of non-ferrous metals and alloys В64 TU 48-21-475-84

Chemical composition

Standard P Mn Si Fe Cu Al Zn Sn Pb
GOST 18175-78 ≤0.01 ≤0.5 ≤0.1 ≤0.5 Rest 4-6 ≤0.5 ≤0.1 ≤0.03
Cu is the basis.
According to GOST 18175-78, the total mass fraction of normalized impurities is ≤ 1.10%. In bronze, used in the production of condenser pipes, the mass fraction of arsenic is allowed up to 0.40%. 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, % HB, MPa
Rolled steel in delivery condition (longitudinal samples)
360-440 60-70 55-65
700-800 4-6 -

Description mechanical marks

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

Physical characteristics

Temperature Е, HPa r, kg/m3 l, W/(m · °C) R, Mr. · m
20 120 8200 105 100

A description of the physical symbols

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