HB-3 is a go-to material for a wide range of wear parts and demanding machining applications. With a 6% cobalt binder and hardness of 93 HRA, this submicron, C2 grade is an ideal choice for cutting tools where an up-sharp edge is required. These include drills and reamers, form tools, end mills, and other solid carbide cutters for stainless steels, polymers, graphite, and carbon fiber composites, as well as non-ferrous alloys like aluminum and copper.
With an extremely homogenous microstructure and uniform grain distribution, HB-3 also an excellent substrate for CVD diamond coatings, which further enhance edge longevity while allowing for increased cutting speeds. Additionally, it provides unmatched performance for wear parts like sand blasting nozzles and wire guides.
| Co (%): | 6 |
| Grain Structure: | Submicron |
| ISO Code: | K05-K10 |
| US Industry Designation: | C3 |
| WC (%): | 94 |
| Density (g/cm3): | 14.9 |
| Avg Grain Size (Micron): | 0.8 |
| Hardness Rockwell A (HRA): | 93.00 |
| Sinter HIP TRS (psi): | 520,000 |
| Wear & Toughness Scale: |  |
Excellent wear properties, abrasion resistance, medium grade, general purpose grade for cutting tools, drills, endmills, and reamers for finishing and semi-finishing and wear parts with little impact, EDM blanks, seal rings and knives.
Extremely hard material, high abrasion resistance, micro grain size grade, for finishing machining cutting tools, drills, endmills, reamers, and wear parts, with very little or no shock, EDM blanks, wire guides and sand blast nozzles.
Extremely hard material, high abrasion resistance, ultra-fine grain size grade, for finish machining cutting tools, drills, endmills, reamers, and wear parts, with very little or no shock, EDM blanks, wire guides, sand blast nozzles.
Exceptional performance in punch applications, Heat-resistant steels, Stainless steels, Non-ferrous metal alloys
Exceptional toughness/wear properties, Ideal for deep hole drilling
Bimodal grain structure offering excellent wear properties, Ideal for deep hole drilling
High Impact forming applications, Header dies, draw dies, stamping die details, Thread rolling, Ammunition dies
Med-/High-impact forming applications, Header dies, draw dies, stamping die details, Fastener forming dies, Ammunition dies
Low impact/light shock resistance, Capability for wide variety of forming applications, Ammunition dies, Light stamping
Steels, SS, non-ferrous varieties forming applications, Light stamping carbide die and nib deep draw, Fine blanking stamping dies, Ammunition dies
Excellent thermal cycling properties, Optimal braze adhesion, Non-cutting grade, Good toughness characteristics
Excellent wear properties, micro grain size grade, general purpose cutting tool grade for semi-finishing and finishing, drilling, endmills, reamers, stamping dies, punches, knoves and all types of cutting tools, will withstand slight shock, EDM blanks.
High wear, low to medium impact, micro grain size grade, for cutting tools, dies, knives, punches, rough tools, will withstand slight shock, EDM blanks, crush rolls, form rolls, coining dies.