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Bronze Brb2

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 БрБ2
Designation GOST Latin BpB2
Transliteration BrB2
The chemical elements BaBe2

Description

Bronze Brb2 used: for the manufacture of semi-finished products (strips, sheets, bars, tubes and wire); springs and elastic sensing elements in instruments, spring details of responsible destination; wear-resistant parts of all kinds; non-sparking tools.

Note

Brb2 beryllium bronze has high strength and wear resistance, good sliding properties, very good deformability in the hardened state, the average electrical conductivity and thermal conductivity.
Analog bronze Brb2 at CMEA 377−76 is bronze CuBe2Ni (Co).

Standards

Name Code Standards
Wire of non-ferrous metals and their alloys В74 GOST 15834-77, OST 4.021.108-92
Bars В55 GOST 15835-2013, OST 4.021.024-92
Sheets and stripes В53 GOST 1789-2013, OST 4.021.069-92
Non-ferrous metals, including rare metals, and their alloys В51 GOST 18175-78, GOST 28873-90, OST 4.021.009-92, TU 48-21-5062-89
Tapes В54 OST 4.021.082-92, TU 48-0812-12-89, TU 48-0812-15-90, TU 48-0812-26-89, TU 48-21-265-87, TU 48-21-743-92
Metal forming. Forgings В03 ST ЦКБА 010-2004

Chemical composition

Standard Si Ni Fe Cu Al Pb Be
GOST 18175-78 ≤0.15 0.2-0.5 ≤0.15 The rest ≤0.15 ≤0.005 1.8-2.1
Cu is the basis.
According to GOST 18175-78, the total mass fraction of normalized impurities is ≤ 0.50%.

Mechanical characteristics

Section, mm sT|s0,2, MPa σB, MPa d5, % d d10 Brinell hardness number, MPa HV, MPa
Strip 1,0-6,0 mm in the delivery state on the EAST 4.021.069-92 (samples transverse)
- - 390-590 - - ≥30 - ≥130
- - 640-930 - - ≥2.5 - ≥170
Strip or tape according to GOST 1789-2013, OST 4.021.082-92. Hardening in air, 305-315 °C (exposure for 2.5 hours + warm-up time of charge) + the Deformation of 30-40 %
0.15-0.25 - 590-880 - - - - ≥170
0.15 - - - - - - ≥170
0.25 - 640-930 - - ≥2.5 - ≥170
Strip or tape according to GOST 1789-2013, OST 4.021.082-92. Hardening in air, 305-315 °C (extract 3 hours + warm-up time of the charge)
0.15-0.25 - 390-590 - - ≥20 - ≤130
0.15 - - - - - - ≤130
0.25 - 390-590 - - ≥30 - ≤130
Strip or tape according to GOST 1789-2013. Hardening in air, 305-315 °C (exposure for 2.5 hours + warm-up time of charge) + the Deformation of 30-40 % + Aging (dispersion hardening)
0.15-0.25 - 1130-1570 - - - - ≥360
0.15 - - - - - - ≥360
0.25 - 1170-1570 - - ≥1.5 - ≥360
Strip or tape according to GOST 1789-2013. Hardening in air, 305-315 °C (extract 3 hours + warm-up time of charge) + Aging (dispersion hardening)
0.15-0.25 - 1080-1470 - - - - ≥330
0.15 - - - - - - ≥330
0.25 - 1130-1470 - - ≥2 - ≥330
Wire soft (tempered), solid (cold-worked after quenching) in the delivery state according to GOST 15834-77. Heating for hardening is to 770-790 °C, exposure for 10-20 min., rapid cooling in water
0.06-0.08 ≥235 343-686 - 15-60 - - ≥100
0.1-1 ≥235 392-637 - 20-60 - - ≥100
1.1-5 ≥235 392-637 - 25-60 - - ≥100
5.5-12 ≥235 392-588 - 30-60 - - ≥100
0.06-0.5 ≥735 931-1372 - - - - ≥180
0.55-1 ≥735 833-1274 - - - - ≥180
1.1-5 ≥735 735-1176 - - - - ≥180
5.5-12 ≥735 735-1078 - - - - ≥180
The wire is subjected to a dispersion hardening of the mild (tempered) and hard (cold-worked after quenching) States in the state of delivery according to GOST 15834-77. Heating for hardening is to 770-790 °C, exposure for 10-20 min., rapid cooling in water + Aging (dispersion hardening) at 310-330 °C, aging 3h.
0.06-0.9 ≥1078 1078-1470 - - - - ≥320
1-12 ≥1078 1078-1568 - - - - ≥320
0.06-12 ≥1372 ≥1176 - ≥1 - - ≥360
Cold-drawn wire for the manufacture of parts and springs as supplied by OST 4.021.108-92 (longitudinal samples, indicated the relative elongation δ1)
0.1-1 - 392-637 - 20-45 - - -
1.2-5 - 392-637 - 25-60 - - -
5.6-12 - 392-588 - 30-60 - - -
0.1-0.5 - 931-1372 - - - - -
0.6-1 - 833-1274 - - - - -
1.2-5 - 735-1176 - - - - -
5.6-12 - 735-1080 - - - - -
Round bars pressed extra virgin in the state of delivery according to GOST 15835-2013
42-100 - ≥440 ≥20 - - - -
Round bars, drawn, in the delivery state on the EAST 4.021.024-92, GOST 15835-2013 (longitudinal samples)
5-40 - 390-590 ≥25 - - 100-150 -
16-40 - 640-880 ≥1 - - ≥150 -
5-15 - 740-980 ≥1 - - ≥150 -
Round bars, drawn, after dispersive hardening (aging) according to GOST 15835-70 (longitudinal samples, on delivery, rate is what condition aged samples)
- - ≥1080 ≥2 - - - ≥320
- - ≥1180 ≥2 - - - ≥340

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
d5 Elongation after rupture
d Elongation after rupture
d10 Elongation after rupture
HV The Vickers hardness

Physical characteristics

Temperature Е, ГПа r, кг/м3 l, Вт/(м · °С) R, НОм · м
20 6-132 8200 84 70-200

A description of the physical symbols

Name Description
Е The normal elasticity modulus
r Density
l Coefficient of thermal conductivity
R UD. the resistivity
С Specific heat

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