Alloy MA15
Designation
| Name |
The value |
| Designation GOST Cyrillic |
МА15 |
| Designation GOST Latin |
MA15 |
| Transliteration |
MA15 |
| The chemical elements |
CuAl15 |
Description
MA15 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 parts of welded structures requiring high yield strength in compression and is operated with maximum working temperatures up to +150 °C — long, up to +200 °C — short-term.
Note
For ICS No. 5/1992 to GOST 22635−77 alloy brand MA15 removed from the standard.
Standards
| Name |
Code |
Standards |
| Non-ferrous metals, including rare metals, and their alloys |
В51 |
GOST 14957-76 |
| Bars |
В55 |
GOST 18351-73 |
| Sheets and stripes |
В53 |
GOST 22635-77 |
Chemical composition
| Standard |
Mn |
Si |
Ni |
Fe |
Cu |
Al |
Zn |
Zr |
La |
Be |
Cd |
| GOST 14957-76 |
≤0.1 |
≤0.05 |
≤0.005 |
≤0.03 |
≤0.03 |
≤0.05 |
2.5-3.5 |
0.45-0.9 |
0.7-1.1 |
≤0.002 |
1.2-2 |
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 |
| Sheet autogeny rental in the state of delivery according to GOST 22635-77 (samples transverse) |
| 0.8-2 |
≥176 |
≥255 |
≥6 |
| 2-3.5 |
≥176 |
≥255 |
≥4 |
| 3.5-10 |
≥166 |
≥245 |
≥4 |
| Bars and rods, hot-pressed in the delivery condition without heat treatment according to GOST 18351-73 (longitudinal samples) |
| 100-160 |
≥215 |
≥285 |
≥5 |
| 160-200 |
- |
≥275 |
≥5 |
| 50-100 |
≥235 |
≥295 |
≥6 |
| 8-50 |
≥215 |
≥275 |
≥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 |
a, 10-6 1/°С |
С, Дж/(кг · °С) |
| 20 |
42 |
1830 |
113 |
65 |
- |
- |
| 100 |
- |
- |
- |
- |
259 |
10048 |
| 200 |
- |
- |
- |
- |
268 |
- |
A description of the physical symbols
| Name |
Description |
| Е |
The normal elasticity modulus |
| r |
Density |
| l |
Coefficient of thermal conductivity |
| С |
Specific heat |
