Brass LC30A3 (ЛА67-2,5)

Designation

Name The value
Designation GOST Cyrillic ЛЦ30А3
Designation GOST Latin LTs30A3
Transliteration LTs30A3
By chemical elements ЛZn30Al3
Name The value
Designation GOST Cyrillic ЛА67-2,5
Designation GOST Latin LA67-2,5
Transliteration LA67-25
By chemical elements ЛAl67-2,5

Description

Brass LC30A3 used: for the manufacture of castings of corrosion-resistant parts used in engineering, shipbuilding, marine engineering and instrument making.

Note

Brass aluminum.

Standards

Name Code Standards
Non-ferrous metals, including rare, and their alloys В51 GOST 17711-93, GOST Р 50425-92
Castings, non-ferrous metals and alloys В84 OST 1 90046-72, OST 5Р.9209-82

Chemical composition

Standard P Mn Si Ni Fe Cu Al Zn Sn Sb Pb
GOST 17711-93 ≤0.05 ≤0.5 - ≤0.3 ≤0.8 66-68 2-3 Rest ≤0.7 ≤0.1 ≤0.7
OST 5Р.9209-82 ≤0.05 ≤0.5 ≤0.3 - ≤0.8 66-68 2-3 Rest ≤0.7 ≤0.1 ≤0.7
Zn is the basis.
According to GOST 17711-93 and OST 5P.9209-82, the total share of impurities should be ≤ 2.6%. Impurities not specified are taken into account in the total amount of impurities.

Mechanical properties

σU, MPa d5, % KCU, kJ/m2 HB, MPa
Castings are supplied without heat treatment
≥392 ≥15 ≥783 ≥90
≥294 ≥12 ≥784 ≥80
Casting investment casting according to OST 1 90046-72 (samples separately cast or cut from castings)
≥294 ≥15 - ≥90

Description mechanical marks

Name Description
σU Limit short-term strength
d5 Elongation after rupture
KCU Toughness
HB Brinell hardness number