The MA5 alloy
Designation
| Name |
The value |
| Designation GOST Cyrillic |
МА5 |
| Designation GOST Latin |
MA5 |
| Transliteration |
MA5 |
| The chemical elements |
CuAl5 |
Description
The MA5 alloy used: for the manufacture of semi-finished products (sheets, plates, bars, rods, profiles, strips, tubes, wire, stampings and forgings) by hot deformation, as well as ingots and slabs intended for the production of all relevant components with maximum operating temperatures up to +150 °C — long, up to +200 °C — short-term.
Standards
| Name |
Code |
Standards |
| Non-ferrous metals, including rare metals, and their alloys |
В51 |
GOST 14957-76 |
| Bars |
В55 |
GOST 18351-73 |
Chemical composition
| Standard |
Mn |
Si |
Ni |
Fe |
Cu |
Al |
Zn |
Mg |
Be |
| GOST 14957-76 |
0.15-0.5 |
≤0.1 |
≤0.005 |
≤0.05 |
≤0.05 |
7.8-9.2 |
0.2-0.8 |
The rest |
≤0.002 |
Mg is the basis.
According to GOST 14957-76 the mass fraction of other impurities is ≤ 0.30%. "Other impurities" include impurities whose permissible content limits are not indicated (≤), as well as impurities not included in the table, the content of which is not determined. Beryllium is not determined, but is introduced by calculation.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d |
| Bars and rods, hot-pressed in the state of delivery according to GOST 18351-73. Without heat treatment (MA5) or hardened (МА5Т4) (longitudinal samples) |
| 100-160 |
≥175 |
≥275 |
≥5 |
| 160-200 |
- |
≥265 |
≥4 |
| 5-100 |
≥185 |
≥295 |
≥6 |
Description mechanical marks
| Name |
Description |
| Section |
Section |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σB |
Limit short-term strength |
| d |
Elongation after rupture |
Physical characteristics
| Temperature |
Е, ГПа |
r, кг/м3 |
l, Вт/(м · °С) |
R, НОм · м |
| 20 |
42 |
1800 |
753 |
130 |
A description of the physical symbols
| Name |
Description |
| Е |
The normal elasticity modulus |
| r |
Density |
| l |
Coefficient of thermal conductivity |
| С |
Specific heat |
