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Brass Lmcs (ЛМцС58-2-2)

Designation

Name The value
Designation GOST Cyrillic ЛМцС
Designation GOST Latin LMtsC
Transliteration LMtsS
The chemical elements ЛMnPb
Name The value
Designation GOST Cyrillic ЛМцС58-2-2
Designation GOST Latin LMtsC58-2-2
Transliteration LMtsS58-2-2
The chemical elements ЛMnPb58-2-2

Description

Brass Lmcs is used: for the manufacture of structural parts, equipment and shipbuilding; anti-friction parts with a simple configuration; the reinforcement of railway bearings; casting parts, metallurgical machinery (bearings, bushings and other friction parts, including reinforcement of railway bearings).

Note

Brass stamps Lmcs is a charging material for the melting of brass stamps Lc38mc2s2. The coefficient of friction of brass without lubrication of 0.24, with a lubricant — 0,016. Maximum load: static 100 kg/cm2, the dynamic is 60 kgf/cm2 sec.

Standards

Name Code Standards
Secondary non-ferrous metals, alloys and wastes В57 GOST 1020-97
Castings from non-ferrous metals and alloys В84 OST 24.916.01-71

Chemical composition

Standard P Mn Si Ni Fe Cu As Al Zn Sn Sb Pb Bi
GOST 1020-97 ≤0.05 1.8-2.5 ≤0.4 ≤1 ≤0.8 56-60 ≤0.05 ≤0.8 The rest ≤0.5 ≤0.1 1.5-2.5 ≤0.01
OST 24.916.01-71 - 1.5-2.5 - ≤1 ≤0.8 57-60 - ≤1 The rest ≤0.5 ≤0.1 1.5-2.5 -
Zn is the basis.
According to GOST 1020-97, nickel can be included in the mass fraction of copper, in this case nickel in the sum of impurities is not taken into account. Total total content of impurities is ≤2,20%.
According to OST 24.916.01-71 the total content of impurities is ≤ 2.50%. The content of nickel is allowed due to the copper content.

Mechanical characteristics

σB, MPa d Brinell hardness number, MPa
Casting as supplied. Without heat treatment
≥343 ≥8 ≥90
≥245 ≥10 ≥70

Description mechanical marks

Name Description
σB Limit short-term strength
d Elongation after rupture

Physical characteristics

Temperature r, кг/м3
20 8500

A description of the physical symbols

Name Description
l Coefficient of thermal conductivity
С Specific heat

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