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Bronze Bra7

Bronze БрХ0,6Цр0,05 (БрХЦр0,6-0,05) Bronze BrN10,5A0,5 (BrNA10,5-0,5) Bronze БрН2,5Х0,7К0,6 (БрНХК2,5-0,7-0,6) Bronze БрН5Мц2Т0,1 (БрНМцТ5-2-0,1) BrNTsr bronze Bronze BrSr0,1 Bronze БрТ5Х0,5 (БрТХ5-0,5) Bronze БрХ0,2Нб0,1 (Alloy 204А; БрХНб0,2-0,1) Bronze БрХ0,3Цр0,09 (БрХЦр0,3-0,09) Bronze БрХ0,4Ко0,4Кр0,2Мг0,04 (Alloy №50) Bronze БрХ0,4Нб0,25 (Alloy 204; БрХНб0,4-0,25) Bronze БрХ0,5В0,2Цр0,2 (ХВЦр0,5-0,2-0,2) Bronze БрХ0,6Т0,5 (БрХТ0,6-0,5) Bronze BrMc5 BrCr0.7 bronze Bronze БрХ0,8 Bronze BrX1 Bronze BrC1Cr Bronze BrChNb Bronze BrCNT Bronze BrCrK Bronze BrCrTV Bronze BrCr0,2 Bronze BrCr0,3 Bronze BrCr0,4 Bronze BrCr0.7 Bronze БрА9Ж4Н4Мц1 (БрАЖНМц9-4-4-1) Bronze BrB2 Bronze БрАЖ1,5 (БрАЖ10-1,5) Bronze БрААЖ3Мц1,5 (БрАЖМц10-3-1,5) Bronze БрААЖ10Ж4Н4 (БрАЖН10-4-4) Bronze БрАА10Мц2 (БрАМц10-2) Bronze BrA5 Bronze БрА6Мг1 (БрАМг6-1) Bronze BrA7 Bronze БрА8,5Ж4Н5Мц1,5 (БрАЖНМц8,5-4-5-1,5) Bronze БрАА9Ж4 (БрАЖ9-4) Bronze БрА9Мц2 (БрАМц9-2) Bronze БрБ1,7НТ (БрБНТ1,7) Bronze БрБ1,9НТ (БрБНТ1,9) Bronze БрБ1,9НТМг (БрБНТ1,9Мг) Bronze BrN1,5Kr0,5 (BrNKr1,5-0,5) Bronze BrB2,5 Bronze БрК0,4Х0,6Кo1,6 (БрКХКo0,4-0,6-1,6) Bronze BrK1H3 (BrKN1-3) Bronze БрК3Мц1 (БрКМц3-1) Bronze BrKd0,5X0,15 (BrKdX0,5-0,15) Bronze BrKd1 BrKo3Mts10 (BrKoMts3-10) bronze Bronze BrMg0.03Cr0.035 (BrMgCr0.03-0.035) Bronze BrMg0,3 Bronze BrMg0,5 Bronze BrMg0,8 Bronze BrMc12A8Zh3N2 (BrMcAzHN12-8-3-2)

Designation

Name The value
Designation GOST Cyrillic БрА7
Designation GOST Latin BpA7
Transliteration BrA7
The chemical elements BaAl7

Description

Bronze Bra7 used: for the manufacture of semi-finished tapes and bands; elements of chemical engineering; moving contact; springs from the tape.

Note

Bronze is corrosion resistant to sulfuric and acetic acids, heat resistant, abrasion resistant.
Bronze brand Bra7 well deformed in a cold state.
Analog bronze Bra7 at CMEA 377−76 is bronze CuAl8.

Standards

Name Code Standards
Tapes В54 GOST 1048-79, OST 4.021.079-92
Non-ferrous metals, including rare metals, and their alloys В51 GOST 18175-78, GOST 28873-90, OST 4.021.009-92
Sheets and stripes В53 TU 48-21-181-82

Chemical composition

Standard P Mn Si Fe Cu Al Zn Sn Pb
GOST 18175-78 ≤0.01 ≤0.5 ≤0.1 ≤0.5 The rest 6-8 ≤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%. 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 characteristics

Section, mm sT|s0,2, MPa σB, MPa d10 HV, MPa
Cold-rolled steel strip 0.1-1.0 mm in the delivery state on the EAST 4.021.079-92. (T/o for "heat-Treated": the Annealing at 260-280 °C (aging of 0.5-1.0 h)
0.5-1 470-720 570-770 ≥5 -
0.5 510-755 589-785 ≥3 -
0.5-1 ≥490 ≥590 ≥10 -
0.5 ≥490 ≥590 ≥5 -
Cold-rolled steel strip of 0.1-2.0 mm in the delivery state according to GOST 1048-79. (T/o for "heat-Treated": the Annealing at 260-280 °C (aging of 0.5-1.0 h)
0.5-1.2 ≥720 ≥770 - ≥230
0.5 ≥760 ≥780 - ≥230
0.5-1.5 470-720 570-770 ≥5 180-240
0.5 510-760 590-780 ≥3 180-240
0.5-2 ≥490 ≥590 ≥10 -
0.5 ≥490 ≥590 ≥5 -

Description mechanical marks

Name Description
Section Section
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σB Limit short-term strength
d10 Elongation after rupture
HV The Vickers hardness

Physical characteristics

Temperature Е, ГПа r, кг/м3 l, Вт/(м · °С) R, НОм · м
20 120 7800 80 110

A description of the physical symbols

Name Description
Е The normal elasticity modulus
r Density
l Coefficient of thermal conductivity

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