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

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Buy, bargain price

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