73. Molybdenum wire
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Scope of application GOST 18905 73
This specification regulates the general requirements for the production of drawn molybdenum wire made by the powder metallurgy method used in the manufacture of electronic devices and light sources. Finished products must meet mechanical requirements, including tensile strength, yield strength, elongation given for specific conditions, diameter tolerances. Chemical analysis, tensile tests and hardness tests must be carried out in accordance with the relevant standards.
| Wire diameter, μm | % tolerance for the diameter of wire of the 1st class of accuracy | % tolerance for wire diameter of 2nd class of accuracy | % Thickness tolerance of 200 mm section of 1st class of accuracy | % Tolerances by weight of 200 mm section of 2nd class of accuracy |
|---|---|---|---|---|
| From 15 to 19.5 with an interval 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 | - |
Storage
In closed warehouses or under a canopy, where adequate protection against mechanical and other damages is provided.
Delivery, price
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