Bronze Brocs4-4-4

Designation

Name The value
Designation GOST Cyrillic БрОЦС4-4-4
Designation GOST Latin BpOTsC4-4-4
Transliteration BrOTsS4-4-4
By chemical elements BaSnZnPb4-4-4

Description

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

Standards

Name Code Standards
Non-ferrous metals, including rare, and their alloys В51 GOST 28873-90, GOST 5017-2006
Sheets and strips В53 TU 48-21-210-94

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 3.5-4.5 ≤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

σU, MPa d5, %
Castings according to GOST 2685-75
320-360 30-40
500-600 1-2

Description mechanical marks

Name Description
σU Limit short-term strength
d5 Elongation after rupture

Physical characteristics

Temperature Е, HPa r, kg/m3 R, Mr. · m
20 72 9100 90

A description of the physical symbols

Name Description
l Coefficient of thermal conductivity
R UD. the resistivity