Alloy АЛ18 (АЛ18В)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
АЛ18 |
| Designation GOST Latin |
AL18 |
| Transliteration |
AL18 |
| The chemical elements |
- |
| Name |
The value |
| Designation GOST Cyrillic |
АЛ18В |
| Designation GOST Latin |
AL18B |
| Transliteration |
AL18V |
| The chemical elements |
- |
Description
Alloy АЛ18 used: for the manufacture of bearings of electric motors with power up to 100 kW and speeds up to 1500 per minute; non-critical bearings, transmissions and gearboxes instead of bronze БрОЦС6−6-3; responsible of the simple parts (pulleys, brackets, face plates, sliders, racks, pattern equipment); castings of parts of metallurgical and energy engineering (as anti-friction material).
Note
Aluminum foundry alloy system Al-Cu.
Advantages: Satisfactory castability and machinability.
Disadvantages: Reduced corrosion resistance.
Standards
| Name |
Code |
Standards |
| Castings from non-ferrous metals and alloys |
В84 |
OST 24.916.01-71 |
Chemical composition
| Standard |
Mn |
Si |
Ni |
Fe |
Cu |
Al |
Zn |
Mg |
| OST 24.916.01-71 |
0.3-0.8 |
1.5-2.5 |
≤0.5 |
1-1.8 |
7.5-9.5 |
The rest |
≤0.5 |
≤0.8 |
Al is the base.
The amount of allowable impurities should be for die casting ≤ 1.70%
Mechanical characteristics
| σB, MPa |
d |
Brinell hardness number, MPa |
| Casting in a metal mold. Without heat treatment |
| ≥177 |
≥0.3 |
≥80 |
Description mechanical marks
| Name |
Description |
| σB |
Limit short-term strength |
| d |
Elongation after rupture |
