Brass LC30A3 (ЛА67-2,5)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
ЛЦ30А3 |
| Designation GOST Latin |
LTs30A3 |
| Transliteration |
LTs30A3 |
| The chemical elements |
ЛZn30Al3 |
| Name |
The value |
| Designation GOST Cyrillic |
ЛА67-2,5 |
| Designation GOST Latin |
LA67-2,5 |
| Transliteration |
LA67-25 |
| The 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 metals, and their alloys |
В51 |
GOST 17711-93, GOST Р 50425-92 |
| Castings from 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 |
The rest |
≤0.7 |
≤0.1 |
≤0.7 |
| OST 5Р.9209-82 |
≤0.05 |
≤0.5 |
≤0.3 |
- |
≤0.8 |
66-68 |
2-3 |
The 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 characteristics
| σB, MPa |
d5, % |
kJ/m2, кДж/м2 |
Brinell hardness number, 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 |
| σB |
Limit short-term strength |
| d5 |
Elongation after rupture |
| kJ/m2 |
Toughness |
