Just one table, you will get to know suitable grade of tungsten carbide rods for different machining materials and how to choose qualified carbide cutting tools in CNC machining.

Introduction of Grades

Grade Cobalt (%) Density (g/cm³) Hardness Hardness Strength Grain Size ISO Grade
HV30 HRA N/mm² Μm
CF10 10 14.4 1550 91.8 3600 0.8 K20/K30
CF12 12 14.1 1620 92.3 3800 0.6 K30-K40
CF12UF 12 14.2 1700 92.5 4200 0.5 K40
CF6UF 6 14.9 1940 94 3800 0.4 K10
CF8UF 8 14.6 1760 93.2 3800 0.4 K20

Recommended Applications

Workpiece Material Tools CF10 CF12 CF12UF CF6UF CF8UF
P Steel Drill Bit ⬤
End Mill Rough Machining ⬤ ⬤ ◯
Fine Finish Machining ◯ ◯ ⬤
M Stainless Steel Drill Bit ⬤
End Mill Rough Machining ◯ ⬤ ◯
Fine Finish Machining ◯ ◯ ⬤
K Cast Iron Drill Bit ⬤
End Mill Rough Machining ⬤
Fine Finish Machining ◯ ⬤ ⬤
N Non-ferrous Metals Drill Bit ⬤
End Mill Rough Machining ◯ ⬤ ⬤
Fine Finish Machining ⬤ ⬤ ⬤
S Heat- resistant Alloy Drill Bit ⬤
End Mill Rough Machining
Fine Finish Machining ⬤ ⬤
Others Graphite, carbon fiber, PCB, composites etc. ⬤ ⬤

⬤  First Choice

◯  Suitable