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Brass ЛМцЖ57-1,5-0,75

Designation

Name The value
Designation GOST Cyrillic ЛМцЖ57-1,5-0,75
Designation GOST Latin LMtsZh57-1,5-0,75
Transliteration LMtsG57-15-075
The chemical elements ЛMnFe57-1,5-0,75

Description

Brass ЛМцЖ57−1,5−0,75 is used: for the manufacture of the rolled strip thickness of 0.3; 0.5 and 1.0 mm, used for brazing carbide tools.

Note

Copper-zinc brass.
Solder ЛМцЖ57−1,5−0,75 — single-layer recommended for brazing most types of metal cutting tools, good flow on the brazed surfaces, provides the desired strength of the solder joint, to reduce the level of residual stresses of soldering, improves the reliability of the tool.

Standards

Name Code Standards
Non-ferrous metals, including rare metals, and their alloys В51 GOST 28873-90, OST 48-184-81
Sheets and stripes В53 TU 48-21-299-84
Wire of non-ferrous metals and their alloys В74 TU 48-21-896-90

Chemical composition

Standard Mn Si Fe Cu Al B Zn Pb
TU 48-21-299-84 1-2 0.1-0.2 0.5-1 56-58 ≤0.02 0.07-0.15 The rest ≤0.05
Cu is the basis.
According to TU 48-21-299-84 the sum of the remaining impurities is ≤ 0.50%. Boron is introduced by calculation when melting at the upper limit and in the finished bands is not controlled. The content of nickel is allowed up to 1.50% due to copper.
According to OST 48-184-81, the total content of all impurities should be ≤ 0.50%. The content of boron is guaranteed by the manufacturer. In the solder of the brand LMZZh57-1.5-0.75, nickel content is allowed up to 1.50% due to copper. Impurities not listed in the table are taken into account in the total amount of impurities.

Mechanical characteristics

sT|s0,2, MPa σB, MPa d y, % kJ/m2, кДж/м2
Solder supplied at OST 48-184-81
≥253 ≥453 ≥25 ≥32 ≥450
≥216 ≥323 ≥52 ≥50 ≥460
≥167 ≥294 ≥51 ≥65 ≥360
≥108 ≥147 ≥49 ≥62 ≥430
≥39 ≥44 ≥66 ≥59 ≥1130
- ≥27 ≥74.5 ≥73 ≥910
- ≥3.9 ≥73 ≥100 ≥500

Description mechanical marks

Name Description
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σB Limit short-term strength
d Elongation after rupture
y The relative narrowing
kJ/m2 Toughness

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