Alloy MA11
Designation
| Name |
The value |
| Designation GOST Cyrillic |
МА11 |
| Designation GOST Latin |
MA11 |
| Transliteration |
MA11 |
| The chemical elements |
CuAl11 |
Description
Alloy MA11 is 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 for the manufacture of the parts, the heating in the process of operation with maximum operating temperatures up to +250 °C — long, up to +300 °C short — term.
Standards
| Name |
Code |
Standards |
| Non-ferrous metals, including rare metals, and their alloys |
В51 |
GOST 14957-76 |
Chemical composition
| Standard |
Mn |
Si |
Ni |
Fe |
Cu |
Al |
Zn |
Nd |
Mg |
Be |
| GOST 14957-76 |
1.5-2.5 |
≤0.1 |
0.1-0.22 |
≤0.03 |
≤0.03 |
≤0.1 |
≤0.2 |
2.5-3.5 |
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 |
d5, % |
| Rolled steel in the delivery state |
|
130-160 |
260-280 |
5-14 |
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 |
| d5 |
Elongation after rupture |
Physical characteristics
| Temperature |
Е, ГПа |
r, кг/м3 |
l, Вт/(м · °С) |
R, НОм · м |
a, 10-6 1/°С |
| 20 |
42 |
1800 |
1088 |
62 |
- |
| 100 |
- |
- |
- |
- |
257 |
| 200 |
- |
- |
- |
- |
275 |
A description of the physical symbols
| Name |
Description |
| Е |
The normal elasticity modulus |
| r |
Density |
| l |
Coefficient of thermal conductivity |
| R |
UD. the resistivity |
