1998-2000
Tungsten Wire Molybdenum Rods
Tungsten Wire
| 1.Appearance: | The tungsten wire is brilliant black and does not warp. No mildewed spots, laminations, stria and burrs are allowed |
| 2. Type, chemical compositions and applications |
|
Type |
W content (%) |
Applications |
|
WAL1 |
99.92 |
Filament Colied-Coil, Grid, Cathode filament, folded filament and Stranded W Wire etc, (All non-sag and shockproof at H.t) |
|
WAL2 |
99.92 |
Filament, Heat-element, Grid, Cathode Filament, Stranded W Wire, W Heater Element Etc, |
| 3. Diameter, weight and tolerances |
|
Diameter (µm) |
Weight mg/200mm |
weight tolerance |
diameter tolerance |
|||
|
class 0 |
class I |
class II |
class I |
class II |
||
|
10 ≤ d ≤ 18 |
>0.30 ~ 0.98 |
? |
? |
|||
|
18 < d ≤ 40 |
>0.98 ~ 4.85 |
? |
?.5 |
? |
||
|
40 < d ≤ 80 |
>4.85 ~ 19.39 |
?.5 |
?.0 |
?.5 |
||
|
80 < d ≤ 300 |
>19.39 ~ 272.71 |
?.0 |
?.5 |
?.0 |
||
|
300 < d ≤ 350 |
>272.71 ~ 371.19 |
?.0 |
?.5 |
|||
|
350 < d ≤ 500 |
?.5 |
?.5 |
||||
|
500 < d ≤ 180 |
?.0 |
?.0 |
||||
|
Types of Tungsten Wire and Molybdenum Wire
|
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