Designation
| Name |
The value |
| Designation GOST Cyrillic |
Л75мк |
| Designation GOST Latin |
L75mk |
| Transliteration |
L75mk |
| By chemical elements |
Л75мк |
Description
Brass L75mk used: for the manufacture of the strips; drawn tubes for heat exchangers; parts of various industrial method of deformation in hot and cold condition.
Note
Complex alloyed brass.
Standards
| Name |
Code |
Standards |
| Tape |
В54 |
GOST 15527-2004 |
| Tubes of non-ferrous metals and alloys |
В64 |
GOST Р 51573-2000 |
Chemical composition
| Standard |
P |
Mn |
Si |
Ni |
Fe |
Cu |
Zn |
Sb |
Pb |
Bi |
| GOST Р 51573-2000 |
0.005-0.02 |
0.05-0.15 |
0.25-0.5 |
0.1-0.25 |
0.03-0.06 |
70-76 |
Rest |
≤0.005 |
≤0.07 |
≤0.002 |
Cu is the basis.
According to GOST R 51573-2000, GOST 15527-2004 the amount of other elements should be ≤ 0.10%.
Mechanical properties
| sT|s0,2, MPa |
σU, MPa |
d10 |
HV, MPa |
| Tube, drawn, 10-50 mm for heat exchangers supplied according to GOST R 51573-2000 (samples) |
| - |
≥350 |
≥45 |
- |
| ≥130 |
≥400 |
≥40 |
80-130 |
Description mechanical marks
| Name |
Description |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σU |
Limit short-term strength |
| d10 |
Elongation after rupture |
| HV |
The Vickers hardness |
Physical characteristics
| Temperature |
Е, HPa |
r, kg/m3 |
R, Mr. · m |
| 20 |
103 |
8630 |
57 |
A description of the physical symbols
| Name |
Description |
| r |
Density |
| l |
Coefficient of thermal conductivity |