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

*: 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	HVOF (JP5000 & JP8000, DJ2600 & DJ2700, JetKote, Woka Jet, K2) HVAF APS
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 (HV_0.3)	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
Spraying distance (mm)	350 – 380