GC090U / K55SF
9% grade for drilling and end milling. One of our hardest and most wear-resistant grades making it excellent for hardened die and mold applications, high silicon aluminum, Kevlar, CFRP, and graphite. High cutting speeds and dry cutting in steel. Adding a Hard Carbon coating makes this an outstanding combination for aluminum applications.
Grade Specifications
| Co | 9.0 |
| WC incl. Doping | 91.0 |
| Density | 14.35 |
| Vickers Hardness HV30 | 1920 ± 50 |
| Rockwell Hardness HRA | 93.7 |
| Fracture Toughness K1C | 9.3 |
| Transverse Rupture Strength | 3800 |
| Transverse Rapture Strenght PSI | 551,000 |
| Porosity |
A: < 02
B: 00 C: 00 |
| Grain Size | 0.20 |
Recommended Applications
| Drilling |
| End Milling |
| Planing |
Recommended Application Material
| Aluminium Alloys |
| CFRP |
| Composite Materials |
| Graphite |
| Hardened Metals |
| Hardened Steels |
| High-Alloyed Steel |
| Kevlar |
| Plastics |
