GOST 18905 73. Molybdenum wire. Range
Technical characteristic
This standard applies to molybdenum drawn wire made by powder metallurgy used in the manufacture of electronic devices and light sources. Wire parameters and limits shall be as specified below.
| Wire Diameter, | 1st accuracy class | 2nd accuracy class | 1st accuracy class | 2nd accuracy class |
| μm | Limit diameter deviation %, | Limit deviation of diameter, %, | Permissible deviation in weight, %, 200 mm | Permissible deviation, %, mass of 200 mm |
| 200 mm in an interval from 15 to 19.5 at intervals of 0.5 | - | - | ± 3,0 | ± 4,0 |
| " 20 "29.5 same 0.5 | - | - | ± 2,5 | - |
| " 30 "39,5 "0,5 | - | - | ± 1,5 | ± 3,0 |
| " 40 "104,4 "1,0 | - | - | ± 1,5 | ± 3,0 |
| " 105 "205,0 "5,0 | - | - | ± 1,5 | ± 3,0 |
| " 210 "400,0 "10,0 | - | - | ± 1,5 | ± 3,0 |
| " 420 "840,0 "20,0 | ± 1,5 | ± 2,5 | - | - |
| " 850 "1550,0 "50,0 | ± 1,5 | ± 2,5 | - | - |
| " 1600 "2500,0 "100,0 | ± 1,5 | ± 2,5 | - | - |
Purpose of molybdenum wire
| Molybdenum grade | Group | Surface and metal condition | Diameter, μm | Precision class of manufacture | Designation |
|---|---|---|---|---|---|
| MF | А | Black | From 20 to 2500 | 1, 2 | Cores for making spirals of tungsten and its alloys. Hooks, supports, ivy for frame nets, and wire mesh over 150 microns in diameter, and other parts |
| Б | Purified | From 15 to 1000 | 1, 2 | Core for making spirals of tungsten and its alloys. Hooks of radio tubes | |
| В | Annealed | From 20 to 1000 | 1, 2 | Various parts of electro-vacuum devices | |
| Г | Cleaned, annealed | 20 to 1000 | 1, 2 | Grids of electronic devices made of wire with diameter over 150 µm, traverses, hooks, ivy, core of spirals | |
| Д | Annealed | From 20 to 1000 | 1 | Core for making spirals of tungsten and its alloys | |
| MK | А | Black | From 200 to 2500 | 1, 2 | Introductions for soldering with quartz and other high-temperature glasses and metallized ceramics, supports and traverses of high-power and some special incandescent lamps, cathodes of gas-discharge devices and other parts which must have an increased strength after high-temperature processing. Can be used as a core in the spiralization of tungsten-rhenium alloy wire for titanium-ceramic lamps |
| Б | Purified | 200 to 1000 | 1, 2 | ||
| В | Annealed | 200 to 1000 | 1, 2 | ||
| Г | Purified, annealed | 200 to 1000 | 1, 2 | ||
| MKHK | А | Black | From 200 to 500 | 1, 2 | Grids of electronic devices |
| MS | А | Black | From 20 to 200 | 1,2 | Grids of electronic devices |
| Б | Cleaned | From 20 to 200 | 1,2 | ||
| В | Annealed | From 20 to 200 | 1, 2 | ||
| Г | Purified, annealed | 20 to 200 | 1,2 | ||
| MRN | А | Black | From 600 to 2500 | 1,2 | Leads, cores for making spirals of tungsten and its alloys, traverses |
| В | Annealed | From 600 to 1000 | 1,2 | Traverses | |
| Г | Cleaned, annealed | From 600 to 1000 | 1,2 | Traverses | |
| Д | Annealed | 600 to 1000 | 1 | Cores for tungsten and its alloys spirals |
supplier
We offer to buy molybdenum wire from the specialized warehouse of the supplier Evek GmbH with delivery in any city. Full compliance with modern quality standards. Supplier Evek GmbH offers to buy molybdenum wire, the price is optimal in this segment of rolled metal products.
Buy, bargain price
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