VPOINT Tungsten Carbide Pellets used for Welding Oil Drilling And Mining Tools: Applications, Materials and Selection Notes

What this product is. 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.

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Specification and how to order

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.

• The grade designation and binder content, in writing.
• Dimensions with the tolerance that actually matters to your grinding or brazing operation.
• Grain size, where edge sharpness or wear resistance depends on it.
• Surface condition: as-sintered or ground.
• Quantity and packing, because small blanks are usually packed by piece count or by weight.

Where it is used

• Brazing onto drill, mining, road-planing and wear-part bodies.
• Blanks that are ground into burrs, drills and cutters in a tool room.
• Pellets and crushed grit for hardfacing and welding consumables.
• Preforms for press-tool and wear applications.

Handling and storage

• Carbide is hard but brittle: do not drop blanks or carry them loose in a box.
• Keep the batch dry, and lightly oiled where a steel carrier or a brazed assembly would corrode.
• Store by grade and size. Mixing grades in one bin is the most common way a wrong grade reaches the brazing bench.
• Treat a chipped corner on a ground blank as scrap: it will show up as a defect in the finished tool.

Checks on receipt

• Measure a sample against the drawing, not against the previous delivery.
• Look for cracks, chipping and surface porosity under a magnifier.
• Confirm the grade marking on the box matches the paperwork.
• Record the batch number so a problem can be traced back to a delivery.

Compared with the alternative

Compared with a finished tool, a blank leaves the grinding to the tool shop: the geometry stays under your control and the grade is chosen for the application, at the cost of an extra grinding step.

From the product comparison section: 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,…

Frequently asked questions

Can you supply to a drawing?

Yes. Send the drawing with the grade, the quantity and the tolerance that matters marked, and the quotation will be against that drawing rather than against a catalogue size.

As-sintered or ground?

Both are available. Grinding adds cost and lead time, and is worth it where the blank locates on a ground face or the edge is used without further machining.

What is the minimum order?

It depends on size and grade. Small trial quantities can be agreed before a production order so the grade can be tested in your own process.

Sources and standards

Amana Tool. "Knowledge Base: shank concentricity, collet installation, vibration and sharpening." www.amanatool.com/knowledge_base. Accessed 10 Nov. 2026.
Amana Tool. "Safety Guidelines for Router Bits and Saw Blades." www.amanatool.com/safety. Accessed 10 Nov. 2026.
C.M.T. Utensili. Router bit instruction sheet: collet seating, feed rate and maintenance guidance. Accessed 10 Nov. 2026.

Standards: ISO 9001 · UNSPSC · eClass

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