ZTC72 Series Matrix powders for PDC bits

The ZTC72 series matrix powder is designed explicitly for PDC bits. It has superior erosion resistance, abrasion resistance, and good infiltration performance.

Chemical Composition (Wt, %)

Grade	Chemical Composition (Wt, %)
Grade	W	Fe	T. C	F. C	Mo	Ni	Ti	Ta	Nb
ZTC7232K1	Balance	≤ 3.2	5.2 – 5.6	≤ 0.04	≤ 0.1	—	≤ 0.08	≤ 0.03	≤ 0.03
ZTC7232K2	Balance	2.5 – 3.0	5.7 – 6.0	≤ 0.04	≤ 0.05	—	≤ 0.03	≤ 0.03	≤ 0.03
ZTC7232K3	Balance	≤ 1.0	5.4 – 5.9	≤ 0.04	≤ 0.1	1.5 – 2.5	≤ 0.08	≤ 0.03	≤ 0.03

Grade and Particle Size

Grade	Particle Size (mesh)*	Apparent Density (g/cm³)	Tap Density (g/cm³)	Transverse Rupture Strength (Mpa)	Hardness (HRC)
ZTC7232K1	– 80 + 325	7.3 – 8.5	9.5 – 10.0	586 – 862	34 – 42
ZTC7232K2	– 80 + 325	7.2 – 8.2	10.5 – 10.9	655 – 1000	38 – 42
ZTC7232K3	– 60 + 325	7.2 – 8.2	9.1 – 9.8	620 – 931	32 – 40

*: We can tailor-make different particle sizes for various applications.

Characteristics and Application

Grade	Characteristic	Application
ZTC7232K1	This grade mainly consists of cast tungsten carbide and macrocrystalline tungsten carbide, a popular grade in most PDC bits plants. By controlling particle size, the powder has a higher apparent density and tap density, which shows superior wear and erosion resistance than other tungsten carbide matrix powders.	Mainly used in erosion-resistant, wear-resistant, and impact-resistant infiltration drill products.
ZTC7232K2	This grade mainly consists of cast tungsten carbide and macrocrystalline tungsten carbide. The optimized particle size distribution gives the product excellent wear resistance after infiltration.	Mainly used in harsh working conditions that are easy to wear and erosion.
ZTC7232K3	This grade mainly consists of cast tungsten carbide, macrocrystalline tungsten carbide, and nickel powder. By controlling particle size, the powder has a higher apparent density and tap density, which shows combined wear, erosion, and impact resistance.	Mainly used in erosion-resistant, wear-resistant, and impact-resistant infiltration drill products.