Bronze Bro5s25 (БрОС5-25)

Designation

Name The value
Designation GOST Cyrillic БрО5С25
Designation GOST Latin BpO5C25
Transliteration BrO5S25
By chemical elements BaSn5Pb25
Name The value
Designation GOST Cyrillic БрОС5-25
Designation GOST Latin BpOC5-25
Transliteration BrOS5-25
By chemical elements BaSnPb5-25

Description

Bronze Bro5s25 used: for the manufacture of bimetal bearings for critical applications.

Standards

Name Code Standards
Non-ferrous metals, including rare, and their alloys В51 GOST 613-79, OST 1 90054-72

Chemical composition

Standard S P Si Ni Fe Cu As Al Zn Sn Sb Pb Bi Mg
GOST 613-79 ≤0.05 ≤0.05 ≤0.02 ≤2 ≤0.2 Rest ≤0.15 ≤0.02 ≤0.5 4-6 ≤0.5 23-26 - ≤0.02
OST 1 90054-72 - ≤0.1 ≤0.02 ≤2 ≤0.25 Rest - ≤0.02 0.2 4-6 ≤0.3 23-27 ≤0.01 -
Cu is the basis.
The total fraction of impurities according to OST 1 90054-72 (elements with the content ≤) is 0.75% with the exception of nickel. Impurities that are not regulated by the table are included in the total amount of impurities.
According to GOST 613-79 the total content of impurities should be ≤ 1,20%. Impurities not regulated by the standard are included in the total amount of impurities. The mass fraction of nickel due to copper and the amount of impurities is not included.

Mechanical properties

σU, MPa d5, % HB, MPa
Castings are supplied without heat treatment
≥147 ≥5 ≥45
≥137.2 ≥6 ≥60

Description mechanical marks

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