Molybdenum MCH
Molybdenum M-5
Molybdenum M-6
M99.9-MP molybdenum
M99.95-MP molybdenum
Molybdenum MK
Molybdenum MRN
Molybdenum MS
Molybdenum MF
Molybdenum PMVP
Molybdenum MCC
Designation
| Name | The value |
|---|---|
| Designation GOST Cyrillic | МЧ |
| Designation GOST Latin | MCh |
| Transliteration | MCh |
| The chemical elements | CuЧ |
Description
Molybdenum MCH is used: for the production of annealed strips intended for the manufacture of parts of vacuum devices by deep drawing; the wire diameter is from 20 to 1000 microns, obtained by powder metallurgy and used for the manufacture of meshes and parts for various applications in electronic products.
Note
Without molybdenum additives.
Standards
| Name | Code | Standards |
|---|---|---|
| Sheets and stripes | В53 | GOST 25442-82 |
| Wire of non-ferrous metals and their alloys | В74 | OST 11 021.004-76 |
| Bars | В55 | TU 48-19-247-87, TU 48-19-247-93 |
Chemical composition
| Standard | C | Si | Ni | Fe | Al | Mo | Ca | Mg |
|---|---|---|---|---|---|---|---|---|
| GOST 25442-82 | ≤0.005 | ≤0.014 | ≤0.005 | ≤0.014 | ≤0.004 | The rest | ≤0.003 | ≤0.002 |
| OST 11 021.004-76 | - | - | - | - | - | ≥99.96 | - | - |
Mo is the basis.
According to GOST 25442-82 the chemical composition is given for molybdenum of MCH grade. It is permissible to increase the mass proportions of impurities of aluminum, iron, calcium, and magnesium, while retaining the sums of the mass fractions of aluminum + iron, calcium + magnesium.
According to OST 11 021.004-76 the chemical composition is given for molybdenum of MCH grade. 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.
According to GOST 25442-82 the chemical composition is given for molybdenum of MCH grade. It is permissible to increase the mass proportions of impurities of aluminum, iron, calcium, and magnesium, while retaining the sums of the mass fractions of aluminum + iron, calcium + magnesium.
According to OST 11 021.004-76 the chemical composition is given for molybdenum of MCH grade. 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 |
|---|---|---|
| Strip rolled heat-treated (annealed) in the delivery state according to GOST 25442-82 (in parentheses are the values for control samples) | ||
| 0.1 | ≥784 | ≥5 (2) |
| 0.15 | ≥784 | ≥5 (2) |
| 0.2 | ≥686 | ≥6 (3) |
| 0.3 | ≥686 | ≥7 (4) |
| Wire as supplied at OST 11 021.004-76. In the column cross-section specified the wire diameter in µm | ||
| 20-100 | ≥1432 | ≥2 |
| 100-400 | ≥1000 | ≥2 |
| 400-600 | ≥883 | ≥3 |
| 600-1000 | ≥785 | ≥3 |
| 20-100 | ≥716 | ≥2 |
| 100-400 | ≥608 | ≥2 |
| 400-600 | ≥587 | ≥3 |
| 600-1000 | ≥490 | ≥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. |
