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Tungsten Carbide Punch Blanks, Die Buttons and Stamping Die Blanks
Tungsten carbide punch blanks, round die button blanks and blocks for stamping and progressive dies, supplied as-sintered or ground, ready for grinding or wire EDM.
For high-volume stamping of electrical steel, connectors and small parts, carbide punches and die inserts run far longer than tool steel between regrinds.
Typical applications
- Progressive dies for lamination and connector stamping
- Punches for piercing and blanking
- Die buttons: round die inserts pressed into the die plate
What we supply
- Round punch blanks and die button blanks to your drawing, as-sintered or ground
- Square and rectangular carbide blocks for die plates and inserts: sizes and grades on our Carbide Blocks page
- Blanks and plates for wire EDM
Choosing the grade
Balance edge wear against chipping: thin, soft strip at high speed suits a harder, finer-grained grade; thick sheet and heavy impact need more cobalt. Tell us the material you stamp, its thickness and your machining route.
Grade data (binder content, grain size, hardness, density, transverse rupture strength) is confirmed in writing for the grade we propose. How we choose grades →
For a fast quotation, send
- Blank dimensions or insert drawing
- Material being stamped and thickness
- Machining method (grinding, wire EDM)
- Quantity
Questions buyers ask
What is the difference between a punch blank and a die button blank?
A punch blank is solid stock that is ground or EDM-cut to the punch profile. A die button is a round insert with a through hole, the die opening, that is pressed into the die plate under the punch. Both are made from round carbide blanks; send the drawing and we quote the blank that leaves the right grinding stock.
Can carbide die blanks be machined by wire EDM?
Yes. Wire EDM is the usual way to cut punch and die profiles from carbide blocks and blanks. Tell us you will EDM the part so the grade we propose suits it.
Where are your block sizes and stamping grades?
Standard block sizes, sintered tolerances and the grade classes we use for stamping are on our Carbide Blocks page.