Alloy AK5M (АЛ5)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
АК5М |
| Designation GOST Latin |
AK5M |
| Transliteration |
AK5M |
| The chemical elements |
- |
| Name |
The value |
| Designation GOST Cyrillic |
АЛ5 |
| Designation GOST Latin |
AL5 |
| Transliteration |
AL5 |
| The chemical elements |
- |
Description
Alloy AK5M used: for the manufacture of ingots and shaped castings by various casting methods (sand casting, investment casting, gravity die casting, pressure casting); casting parts, metallurgical and transport equipment (heads and cylinders of air-cooled engines; parts of machines and devices working at temperatures above +225 °C) and other heavily loaded parts; casting parts of valves and actuators to it.
Note
Aluminum foundry alloy of the system Al-Si-Cu. Alloy high-strength heat-resistant.
Advantages: High mechanical strength, a satisfactory casting processing properties, weldability and corrosion resistance. Good machinability.
Disadvantages: Reduced ductility.
Standards
| Name |
Code |
Standards |
| Non-ferrous metals, including rare metals, and their alloys |
В51 |
GOST 1583-93, STP М287-78 |
| Castings from non-ferrous metals and alloys |
В84 |
OST 26-07-1114-74, OST 1 80029-83, OST 24.916.01-71 |
Chemical composition
| Standard |
Mn |
Si |
Fe |
Cu |
Al |
Ti |
Zn |
Sn |
Mg |
Be |
| GOST 1583-93 |
≤0.5 |
4.5-5.5 |
≤0.6 |
1-1.5 |
The rest |
- |
≤0.3 |
≤0.01 |
0.35-0.6 |
≤0.1 |
| OST 24.916.01-71 |
≤0.5 |
4.5-5.5 |
≤0.6 |
1-1.5 |
The rest |
≤0.15 |
≤0.3 |
≤0.01 |
0.35-0.6 |
≤0.1 |
Al is the base.
According to GOST 1583-93 and OST 24.916.01-71, the iron content is specified for casting in sand molds and for investment models. The content of iron during casting in the mold is ≤ 1.00%, when casting under pressure ≤ 1.50%. The amount of allowable impurities should be for casting in sand molds and for investment models ≤ 1.00%, casting in chill molds ≤ 1.30%, injection molding ≤ 1.70%. The total content of titanium and zirconium should be ≤ 0.15%.
According to OST 24.916.01-71 the total content of titanium, chromium and manganese should not be more than 0.50%.
By STP M287-78, the total content of titanium and zirconium should not be more than 0.15%. The amount of allowable impurities should be for casting in sand molds ≤ 1.00%, casting in chill mold ≤ 1.30%. The iron content is indicated for sand casting. The iron content during casting in the mold is ≤ 1.00%.
Mechanical characteristics
| σB, MPa |
d |
Brinell hardness number, MPa |
| Casting (in land, investment casting, gravity die casting). Mode T1: Artificial aging without prior tempering at 175-185 °C (extract 5-10 h) |
| ≥157 |
≥0.5 |
≥65 |
| Casting. Mode T5: Quenching in water from 520-530 °C (aging for 3-5 hours) + incomplete artificial aging at 170-180 °C (extract 5-10 h) |
| ≥196 |
≥0.5 |
≥70 |
| ≥216 |
≥0.5 |
≥70 |
| Casting. T6 mode: Quenching in water from 520-530 °C (aging for 3-5 hours) + Complete artificial aging at 195-205 °C (aging for 3-5 hours) |
| ≥225 |
≥0.5 |
≥70 |
| ≥235 |
≥1 |
≥70 |
| Casting. Mode T7: Quenching in water from 520-530 °C (aging for 3-5 hours) + vacation stabilizing at 220-240 °C (aging for 3-5 hours) |
| ≥176 |
≥1 |
≥65 |
Description mechanical marks
| Name |
Description |
| σB |
Limit short-term strength |
| d |
Elongation after rupture |
Physical characteristics
| Temperature |
Е, ГПа |
r, кг/м3 |
R, НОм · м |
| 20 |
70 |
2670 |
462 |
A description of the physical symbols
| Name |
Description |
| l |
Coefficient of thermal conductivity |
| С |
Specific heat |
