Tungsten Bar
Grade:W-1 W-2 W-3 W-4
Apprearance:silver gray metallic luster
W-2: (10-16)×(10-16)×(≥300)mm
W-1/W-4: (10-16)×(10-16)×(≥30)mm
Purity:W≥99.95% or W≥99.9%
Main application: W-1 used for making the pole ,wire drawing,or doing steel-making additive.W-2 used for processing tungsten parts or as a tool bit of processing lathe,conductors,steel W-4 is used as the steel-making additives. Main content,density,applications,dimensions of pressed blanks.
| Description | Code | W content (substracive method) | Density | Application | Dimensions(mm) |
|---|---|---|---|---|---|
| Pure tungsten bar | TW-2 | ≥99.95 | ≥17.5 | For swaging W rods and contacts | (10-16)x(10-16)x(≥300) |
| Tungsten bar for drawing wire | TW-2.1 | ≥99 | ≥17.5 | For drawing wire, stirring purposes in rare earth smelting | (10-16)x(10-16)x(≥300) |
| Tungsten bar for steel smelting | TW-1, TW-4 | ≥99 | ≥17.5 | High purity W bars for steeling smelting and to alloys additives. Industrial class pure W bars for steel smelting. | — |
Tungsten Bar Impurity Content % Per Grade
| Impurity Content % | Grade W-1 | Grade W-2 | Grade W-3 | Grade W-4 |
|---|---|---|---|---|
| Pb | 0.0001 | 0.0005 | 0.0005 | 0.0005 |
| Bi | 0.0001 | 0.0005 | 0.0005 | 0.0005 |
| Sn | 0.0003 | 0.0005 | 0.0005 | 0.0005 |
| Sb | 0.001 | 0.001 | 0.001 | 0.001 |
| As | 0.0015 | 0.002 | 0.002 | 0.002 |
| Fe | 0.003 | 0.004 | 0.004 | 0.003 |
| Ni | 0.002 | 0.002 | 0.002 | 0.05 |
| Al | 0.002 | 0.002 | 0.002 | 0.005 |
| Si | 0.002 | 0.002 | 0.002 | 0.005 |
| Ca | 0.002 | 0.002 | 0.002 | 0.005 |
| Mg | 0.001 | 0.001 | 0.001 | 0.005 |
| Mo | 0.004 | 0.004 | 0.004 | 0.005 |
| P | 0.001 | 0.001 | 0.001 | 0.003 |
| C | 0.003 | 0.005 | 0.005 | 0.01 |
| O | 0.002 | 0.002 | 0.002 | 0.007 |
| N | 0.002 | 0.002 | 0.002 | 0.005 |
