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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, %)

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.