EDM Blocks

Composition: 10% corrosion-resistant binder with submicron grain structure. Very good wear resistance with high edge sharpness but less shock resistance than higher binder grades. Excellent for EDM operations and good in non-ferrous applications. 

Application: An upgrade to standard 10% submicron grades, KR855 presents ideal wear resistance in high-speed stamping, medium, thin sheets — coining brass (~.010" / 0.25mm thick), can die ironing rings, non-gummy steels, compacting dies, stamping dies for razor blades, lead frames (thin copper ~.030"/0.76mm), annealed copper, and draw dies (300 series stainless steel). 

Composition: 12% corrosion-resistant binder with medium/fine-grain structure. Very high strength for medium impact with low wear properties. 

Application: Light blanking dies - Silicon Steel up to ~.020" / 0.5mm, Medium Blanking - Mild Steel to ~.030" / 0.8mm Lamination dies - silicon steel, Scroll dies, burnishing rolls, backward and forward extrusion dies (light impact). 

Composition: 15% corrosion-resistant mixed binder with submicron grain structure for lead frame and connector stamping. Very high strength and excellent wear resistance for medium-impact applications. 

Application: Stamping dies for razor blades, electronic stamping, lead frame dies, laminations, spring steel stampings, and coining dies (hard metal). Not recommended for stamping thick stainless steel. Use in place of CD650 for difficult to EDM parts, or if corrosive die lubricants are used. 

Composition: Conventional 15% cobalt binder with submicron grain structure for lead frame and connector stamping. Very high strength and excellent wear resistance for medium-impact applications. Our most popluar grade for general purpose stamping. 

Application: Stamping dies for razor blades, electronic stamping, lead frame dies, laminations, spring steel stampings, coining dies (hard metal). Not recommended for stamping thick stainless steel. 

Composition: 15.5% cobalt binder with ultrafine submicron grain structure for lead frame and connector stamping. Very high strength and excellent wear resistance for low-impact applications. 

Application: Extremely thin punches or tools with very fine features will benefit from the ultrafine submicron grain structure, which helps to prevent premature corner washout and maintain edge strength. Also, may be used as an upgrade to CD650, due to increased hardness. 

Composition: This 12% Cobalt grade is well suited for high impact stamping and bending applications due to its coarse grain structure and high fracture toughness. 

Application: Impacting punches, Coining dies, Forming dies, Can die punches, Swaging dies, Cold forming, Back extrusion punches & dies, high-impact extrusion dies, Nail grip dies, Very severe draw dies for .075" thick cold rolled steel, Piercing punches-305 stainless, Works well on gummy steel.