Tungsten Carbide Cobalt Powder – LA-3203-25 (-325 +15u) WC-Co 83/17, sintered and crushed
These Tungsten Carbide coatings have higher toughness, ductility and fretting resistance than the 12% Cobalt variety. Appropriate for non-corrosive applications under 1000F.
Wear resistant thermal spray coatings of tungsten carbide are used for their hardness and wear resistance. When choosing a tungsten carbide powder, the particle size and type of carbide selected are important in determining the correct material to combat various forms of erosion, abrasion and wear. Whereas the amount of metal matrix in the coating (nickel, cobalt, or alloy) will depend on the toughness and abrasion resistance required.
- Material Specificaiton
- Product Application
- Useful Documents
- Equivalents
- Method
- REVIEW
Material Specificaiton for LA-3203-25 (-325 +15u) WC-Co 83/17, sintered and crushed
Chemical Compositon Requirements (By weight percent)
| Element | Minimum | Maximum | Target |
| Aluminum | - | - | - |
| Boron | - | - | - |
| Carbon | 4.50% | 5.60% | 5.05% |
| Chromium | - | 0.50% | 0.25% |
| Cobalt | 15.00% | 18.00% | 16.50% |
| Free Carbon | - | - | - |
| Iron | - | 1.50% | 0.75% |
| Manganese | - | - | - |
| Molybdenum | - | - | - |
| Nickel | - | 0.50% | 0.25% |
| Oxygen | - | - | - |
| Silicon | - | - | - |
| Sulfur | - | - | - |
| Tungsten | 76.00% | - | 76.00% |
| Vanadium | - | - | - |
Rotap Sizing Requirements (Weight Percent Per ASTM B214)
| U.S. Mesh Passing Sieve X Retained | - | - | Min. | Max. |
| - | - | 140 Mesh | - | - |
| 140 Mesh | X | 170 Mesh | - | - |
| 170 Mesh | X | 200 Mesh | - | - |
| 200 Mesh | X | 230 Mesh | - | 0.00% |
| 230 Mesh | X | 270 Mesh | - | 1.00% |
| 270 Mesh | X | 325 Mesh | - | 5.00% |
| 325 Mesh | X | D | 94.00% | - |
Sub-Sieve Sizing Requirements (Volume Percent Per ASTM B822)
| Micron Channel | Min | Max |
| -15 μ | - | 5.00% |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
Sub-Sieve Sizing Requirements (Volume Percent Per ASTM B822)
| Testing Procedure | Minimum | Maximum |
| Hall Flow (per ASTM B213) | - | - |
| Apparent Density (per ASTM B212) | - | - |
| Mean Value (per ASTM B222) | - | - |
| D10 (per ASTM B222) | - | - |
| D50 (per ASTM B222) | - | - |
| D90 (per ASTM B222) | - | - |
These products are ideal for:
- Landing Gears
- Mid-span shrouds
- Pump seals
- Aircraft Flap Tracks
- Exhaust fans
- Crushing Rollers
Equivalents:
- Metco 73F NS
- WC 128
Method:
- Air Plasma Spray
- HVOF
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