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- Standard Specification
- Packing and Storage
CNPC POWDER tungsten powder process method used hydrogen reduction of tungsten trioxide or secondary ammonium tungstate.
The process generally divided into two stages,the first stage in temperatures of 500-700℃,tungsten trioxide reduction of
The next step in temperatures of 700-900℃,tungsten oxide reduction of tungsten powder.Reduction reaction in tubular furnace or ratary furnace.
Tungsten powder's quality depends on the reduction process,especially of purity,particle size,particle size compositon,etc.
The process generally divided into two stages,the first stage in temperatures of 500-700℃,tungsten trioxide reduction of
The next step in temperatures of 700-900℃,tungsten oxide reduction of tungsten powder.Reduction reaction in tubular furnace or ratary furnace.
Tungsten powder's quality depends on the reduction process,especially of purity,particle size,particle size compositon,etc.
Tungsten Powder process method is reduced.It's grey irregular
shape powder with high density.Main used in hard alloy,high
temperature material.
Apperent Density Particle Shape Oxgyen Content Color
W 4.3-6.5g/cm3 irregular 0.3% darker
| CAS no.: | 7440-33-7 |
|---|---|
| HS code: | 8101999000 |
| Molecular Formula: | W |
| Color: | Grey |
| Shape: | Irregular shape |
| Purity: | 99.95% |
| Product method: | Reduced |
| Molecular Weight: | 183.85 |
| Freezing/Melting Point: | 3410℃ |
| Boiling Point: | 5927 ℃ |
| Specific Gravity/Density: | 19.3g/cm3 |
| Applicable Solubility in water: |
No |
- Main used in hard alloys,diamond tools,powder metallurgy industry.
- Chemical industry.
- Used in high temperature alloy material.
- Raw materials of W-Re electric thermocouples.
- Used in increase of weight material.
| Grade | Composition (%) | A.D.g/cm3 | O(%) | Particle Size | ||||
|---|---|---|---|---|---|---|---|---|
| +100(150μm) | +140(106μm) | +200(75μm) | +325(45μm) | -325(45μm) | ||||
| CNPC-W01 | W 99.95min | 3.3-4.2 | 0.3 | Fsss:1-3μm | ||||
| CNPC-W02 | 3.8-4.8 | Fsss:3-5μm | ||||||
| CNPC-W03 | 4.2-5.2 | Fsss:5-8μm | ||||||
| CNPC-W04 | 4.5-6.0 | Fsss:8-15μm | ||||||
| Grade | Package |
|---|---|
| CNPC-W01 | 25KG/Bag |
| CNPC-W02 | 25KG/Bag |
| CNPC-W03 | 25KG/Bag |
| CNPC-W04 | 25KG/Bag |
Storage Note:
- The copper powder should store in a cool, ventilated warehouse. Away from fire and heart source .
- It should be stored apart from oxidant acids, halogen ,mixed reservoir of avoiding by all means.
- Equipped with corresponding varieties and number of fire equipment.
- Storage area should be equipped with the right material for leakage content.
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