Molybdenum MK
Designation
| Name |
The value |
| Designation GOST Cyrillic |
МК |
| Designation GOST Latin |
MK |
| Transliteration |
MK |
| The chemical elements |
Cu |
Description
Molybdenum MK is used: for the manufacture of wire with a diameter of from 200 to 1000 µm, obtained by powder metallurgy and used for the manufacture of parts for various applications in electronic products.
Note
Molybdenum with a silica-doped, characterized by much higher temperature rekristallizatsiya higher tensile strength and bending in the annealed condition, the molybdenum than other brands.
Standards
| Name |
Code |
Standards |
| Wire of non-ferrous metals and their alloys |
В74 |
OST 11 021.004-76 |
Chemical composition
| Standard |
Si |
Mo |
| OST 11 021.004-76 |
0.02-0.04 |
≥99.92 |
Mo is the basis.
According to the OST 11 021.004-76 chemical composition is given for molybdenum grade MK. The total mass fraction of impurities should not be more than 0.040%. The amount of impurities includes the following elements: calcium, magnesium, nickel, iron, aluminum, if they are not additives.
Mechanical characteristics
| Section, mm |
σB, MPa |
d |
| Wire as supplied at OST 11 021.004-76. In the column cross-section specified the wire diameter in µm |
| 200-400 |
≥1197 |
≥2 |
| 400-1000 |
≥981 |
≥3 |
| 200-400 |
≥804 |
≥2 |
| 400-1000 |
≥687 |
≥3 |
Description mechanical marks
| Name |
Description |
| Section |
Section |
| σB |
Limit short-term strength |
| d |
Elongation after rupture |
Technological properties
| Name |
The value |
| Features of production |
For OST 11 021.004-76 wire micron size range comes in the following six groups: A. Wire having on a surface layer of the technological lubricant; B. Wire, free from technological lubricant by electrochemical etching method; B. Wire, annealed to the required mechanical properties, Wire, purified by the method of electrochemical etching and annealed to the required mechanical properties; D. Wire, annealed to the required mechanical properties. Compared to the wire group has higher strength and less elongation; E. Wire, purified by the method of electrochemical etching and annealed to the required mechanical properties. Compared with the wire of the group G has a higher coefficient "K" and a smaller elongation. |
