WC-12Co Thermal Spray Powder
- Both Agglomerated & Sintered and Sintered and Crushed powder are available. Agglomerated and sintered powders are spherical or near-spherical with good flowability. Sintered and crushed powders are irregular.
- The maximum service temperature is up to 500℃.
- The dense coating has high hardness with excellent resistance to abrasive wear, fretting wear, adhesive wear, and erosion wear.
- High fracture toughness.
- Mainly used in mechanical parts, oil and gas equipment, metallurgical roller and pump seal, etc.
Grade & Chemical Composition
Grade |
Chemical Composition (Wt, %) |
||||
W |
T. C |
Co |
Fe |
O |
|
ZTC42 |
Balance |
5.2 – 6.0 |
11.5 – 12.5 |
≤ 1.0 |
≤ 0.5 |
ZTC42D* |
Balance |
5.2 – 6.0 |
11.5 – 12.5 |
≤ 0.15 |
≤ 0.5 |
*: D stands for spherical or near-spherical thermal spray powder.
Size & Physical Properties
Grade |
Type |
Size Fraction (μm) |
Apparent Density ( g/cm³) |
Flow Rate (s/50g) |
Application |
ZTC4251 |
WC – Co 88/12 Sintered & Crushed |
– 53 + 20 |
≥ 4 |
≤ 25 |
(JP5000 & JP8000, DJ2600 & DJ2700, JetKote, Woka Jet, K2)
|
ZTC4253 |
– 45 + 20 |
≥ 4 |
≤ 25 |
||
ZTC4252 |
– 45 + 15 |
≥ 4 |
≤ 25 |
||
ZTC4251D |
WC – Co 88/12 Agglomerated & Sintered |
– 53 + 20 |
≥ 4 |
≤ 18 |
|
ZTC4253D |
– 45 + 20 |
≥ 4 |
≤ 18 |
||
ZTC4252D |
– 45 + 15 |
≥ 4 |
≤ 18 |
||
ZTC4281D |
– 45 + 11 |
≥ 4 |
≤ 18 |
||
ZTC4254D |
– 38 + 10 |
≥ 4 |
≤ 18 |
||
ZTC4282D |
– 30 + 10 |
≥ 4 |
≤ 18 |
||
We can tailor-make different particle size distributions and apparent densities for various applications. |
Recommended Spray Parameters (HVOF) |
|
Coating Properties |
||
Material |
WC – 12Co |
|
Hardness (HV0.3) |
1100 – 1300 |
Manufacturing |
Agglomerated & Sintered |
|
Bonding Strength (MPa) |
> 70MPa |
Size Fraction (µm) |
– 45 + 15 |
|
Deposited efficiency (%) |
40 – 50% |
Spray Torch |
JP5000 |
|
Porosity (%) |
< 1% |
Nozzle (inch) |
6 |
|
|
|
Kerosene (L/h) |
22.7 |
|
||
Oxygen (L/min) |
944 |
|
||
Carrier gas (Ar) (L/min) |
7.5 |
|
||
Powder feed rate (g/min) |
70 – 100 |
|
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Spraying distance (mm) |
350 – 380 |
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