Molybdenum MS
Designation
| Name |
The value |
| Designation GOST Cyrillic |
МС |
| Designation GOST Latin |
MC |
| Transliteration |
MS |
| The chemical elements |
CuPb |
Description
Molybdenum MS is used: for the manufacture of wire with a diameter of from 20 to 200 microns obtained by the method of powder metallurgy and used for the manufacture of meshes in electronic products.
Note
Molybdenum doped cobalt, iron and Nickel (separately or in sum), characterized by increased compared with the molybdenum stamps MCH ductility in the annealed condition.
Standards
| Name |
Code |
Standards |
| Wire of non-ferrous metals and their alloys |
В74 |
OST 11 021.004-76 |
Chemical composition
| Standard |
Mo |
| OST 11 021.004-76 |
≥99.86 |
Mo is the basis.
According to the OST 11 021.004-76 chemical composition is given for molybdenum grade MS. The additive content of cobalt, iron, nickel (separately or in the sum) should be within 0,020-0,10%. The total mass fraction of impurities should not be more than 0.040%. The amount of impurities includes the following elements: calcium, magnesium, silicon, 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 |
| 20-100 |
≥1530 |
≥3 |
| 100-200 |
≥1324 |
≥5 |
| 20-100 |
≥716 |
≥3 |
| 100-200 |
≥608 |
≥5 |
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. |
