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VPOINT Tungsten Carbide Pellets used for Welding Oil Drilling And Mining Tools
Tungsten carbide pellets for welding oil drilling tools: KY3/KY4, 14.5-14.7 g/cm³, 90.0-91.5 HRA, TRS ≥1700 N/mm².
The VPOINT VPOINT Tungsten Carbide Pellets used for Welding Oil Drilling And Mining Tools are a carbide boring and drilling tool. Ideal for welded oil drilling tool bodies, mining and drilling wear parts and carbide tooth and pellet programmes.
VPOINT Carbide Tungsten Carbide Pellets used for Hardbanding new and used drill pipe collars
Tungsten Carbide Pellets
Tungsten carbide is a very hard and dense material, is used in tools and cutters requiring high hardness and cutting resistance. It is also used to make wear-resistant cutting knives and drills. This material is made by sintering tungsten carbide powder in a hot mixture of carbon and silicon carbide (SiC) powders at temperatures up to approximately 2,400 degrees Celsius (4,000 degrees Fahrenheit).
In addition to granules, tungsten carbide powder is also often commercially available because the powder form is more suitable for certain industrial applications, including the production of cutting tools and other abrasives.
Industries that primarily use tungsten carbide pellets include manufacturing, metallurgy, mining and mechanical engineering.
Application
1：Tungsten carbide pellets are used as reservoir balls for oil shale mining operations and as abrasives in ceramics manufacturing processes.
2：Cutting tool-Tungsten carbide pellets are used as cutting tools for metals, plastics and other materials. It can be used to cut hard materials such as stainless steel, titanium, and nickel alloys.
3:Semiconductor production-Tungsten carbide pellets are used as semiconductor materials in integrated circuit (IC) manufacturing. It provides high thermal conductivity, high strength and excellent mechanical properties, which are important for semiconductors.
4:Abrasives-Tungsten carbide powder is often used as an abrasive for stamping grinding. Excellent wear resistance and long service life at high speeds.
5：VPOINT Carbide Tungsten Carbide Pellets used for Hardbanding new and used drill pipe collars
| Grade | Densityg/cm3 | HardnessHRA | TRS ≥N/mm² |
| KY3 | 14.5-14.7 | 90.0-91.0 | 1700 |
| KY4 | 14.6-14.7 | 91.0-91.5 | 1700 |
Design and Construction
The tungsten carbide pellets for welding oil drilling tools are carbide wear parts supplied in grades KY3 and KY4: density 14.5-14.7 g/cm³, hardness 90.0-91.5 HRA and transverse rupture strength ≥ 1700 N/mm² per the specifications tables.
How It Works
The pellets weld onto the drilling tool body and serve as the wear surface that contacts the formation: carbide hardness and strength hold the tooth shape through abrasive drilling, while the welded steel body carries the structural load.
Applications
- Welded oil drilling tool bodies
- Mining and drilling wear parts
- Carbide tooth and pellet programmes
Suitable Materials
- Welded drilling tool bodies
- Mining and oilfield tooling
- Carbide wear-part programmes
- Abrasive formation drilling
The KY3/KY4 carbide grades hold hardness and strength as welded wear parts in drilling tools.
Material Comparison: Tungsten Carbide Pellets vs. Alternative Hardbanding Materials
Welded hardbanding is also laid down with alumina ceramic pellets or Stellite (cobalt-based alloy) pellets. The figures below are typical published industry values showing where each material wins, so you can match the material to the formation, the tool body and the welding process.
| Property | Tungsten Carbide Pellets (KY3/KY4) | Alumina Ceramic Pellets | Stellite (Co-based Alloy) |
| Hardness | 1,600–2,200 HV (89–92 HRA) | ~1,500–1,600 HV (80–85 HRA) | Lower than carbide |
| Density | 14.5–15.0 g/cm³ | ~3.9 g/cm³ | Medium |
| Fracture toughness | 8–15 MPa·m½ | 3.5–4.5 MPa·m½ (brittle) | High — impact tolerant |
| Service temperature limit | ~500–600 °C in air (Co binder oxidizes above) | ~1,000 °C+ | High |
| Corrosion resistance | Good in neutral media; Co binder is acid-sensitive | Excellent — no metallic binder | Very good |
| Best suited for | High-abrasion rock drilling and hardbanding where impact loads are moderate | Corrosive or high-temperature service with low impact | Impact- and galling-dominated wear |
Figures are typical published values for representative grades; exact values vary with grade, grain size and binder content — confirm against the material data sheet before specifying.
Delivery Scope
Pellets are supplied per grade. Order by grade and quantity as stated in the specifications tables below.
Why Choose VPOINT
- Grade conformance — every batch is certified against the KY3/KY4 specification (density, hardness, TRS) before shipment.
- Grade choice support — engineering guidance on KY3 vs. KY4 selection for your formation, tool body and welding process.
- Custom quantities and packaging — order by grade and quantity; bulk or small-trial packaging available.
- Non-standard requests — special grades or pellet sizes outside the standard catalogue quoted on request.
- Factory-direct since 2008 — ISO 9001 manufacturing in Sichuan and Dongguan, China; no trading intermediaries.
Send your specification or a worn hardbanding sample, and our engineering team will quote the exact grade and quantity you need.
Precision & Quality Control
Every pellet batch is inspected before shipment. Density, hardness (HRA) and transverse rupture strength are tested on samples drawn from each sintered lot and certified against the KY3/KY4 specification.
Batches measuring outside specification do not ship. Inspection is performed under our ISO 9001 quality system, with batch records retained for traceability.
Specifications
Full grade specifications (Grade KY3 / KY4 — density 14.5–14.7 g/cm³, hardness 90.0–91.5 HRA, TRS 1,700 N/mm²) are listed in the table under the Application section above. Pellets are supplied per grade; order by grade and quantity.
Key words: carbide pellets, welding carbide grade, oil drilling carbide, KY3 KY4 carbide
