Two flutes End Mill For Steel High Performance Tungsten Carbide End Milling
Specifications
| Material | GU25UF |
| WC | 88% |
| Co | 12% |
| TRS | >4300N/mm2 |
| Hardness | >92HRA |
| A.O.L | 50mm-150mm |
| Grain size | 0.4μm |
| Upto | HRC60 |
| Flutes No | 2 Flutes |
| Coating | AlTiN or TiSiN |
| Suitable for | Steel,stainless steel,nickel alloy,Titanuim alloy,cast iron,plastic and other materials |
Coating:
| Item | AlTiN | TiSiN |
| Hardness(HV): | 3200 | 3600 |
| Thickness(μm): | 2.5-3 | 3 |
| Oxidation Temp(°): | 900 | 1000 |
| frictional Coefficient: | 0.3 | 0.45 |
| Color: | Black | Copper |
Standard Sizes
| Size | Flute Length of End Mills(mm) |
| Flat end | Ball Nose | Round nose |
| D1*D4*50 | 3 | 2 | 3 |
| D1.5*D4*50 | 4 | 3 | 4 |
| D2*D4*50 | 5 | 4 | 5 |
| D2.5*D4*50 | 6 | 5 | 6 |
| D3*D4*50 | 8 | 6 | 8 |
| D3*D3*50 | 8 | 6 | 8 |
| D3.5*D4*50 | 9 | 7 | 9 |
| D4*D4*50 | 10 | 8 | 10 |
| D1*D6*50 | 3 | 2 | 3 |
| D1.5*D6*50 | 4 | 3 | 4 |
| D2*D6*50 | 5 | 4 | 5 |
| D2.5*D6*50 | 6 | 5 | 6 |
| D3*D6*50 | 8 | 6 | 8 |
| D3.5*D6*50 | 9 | 7 | 9 |
| D4*D6*50 | 10 | 8 | 10 |
| D6*D6*50 | 13 | 10 | 13 |
| D6*D6*50 | 15 | 12 | 15 |
| D7*D8*60 | 17 | 14 | 17 |
| D8*D8*60 | 20 | 16 | 20 |
| D10*75 | 25 | 20 | 25 |
| D12*75 | 30 | 24 | 30 |
| D14*100 | 45 | 28 | 35 |
| D16*100 | 45 | 32 | 40 |
| D18*100 | 45 | 36 | 40 |
| D20*100 | 45 | 40 | 40 |
| Flute Length of Extended End Mills(mm) |
| D3*D4*75 | 12 | 6 | 12 |
| D4*D4*75 | 16 | 8 | 14 |
| D5*D6*75 | 18 | 10 | 15 |
| D6*D6*75 | 24 | 12 | 20 |
| D8*75 | 25 | 16 | 25 |
| D3*D4*100 | 12 | 6 | 15 |
| D4*D4*100 | 20 | 8 | 15 |
| D5*D6*100 | 20 | 10 | 20 |
| D6*D6*100 | 30 | 12 | 25 |
| D8*D8*100 | 35 | 16 | 30 |
| D10*100 | 40 | 20 | 30 |
| D12*100 | 45 | 24 | 35 |
| D6*D6*150 | 45 | 12 | 40 |
| D8*D8*150 | 50 | 16 | 45 |
| D10*150 | 55 | 20 | 50 |
| D12*150 | 55 | 24 | 55 |
| D14*150 | 60 | 28 | 60 |
| D16*150 | 70 | 32 | 65 |
| D18*150 | 70 | 36 | 70 |
| D20*150 | 70 | 40 | 70 |

End Mills Type
Ball Nose End Mills
Ball nose mills have a radius at the bottom which makes for a nicer surface finish in your workpiece, meaning less work for you as the piece won’t need to be finished any further.
They are used for contour milling, shallow slotting, pocketing and contouring applications.
Ball nose mills are ideal for 3D contouring because they are less prone to chipping and leave a nice rounded edge.
Tip: Use a Roughing end mill first to remove large areas of material then proceed with a ball nose end mill.
Ball nose end mills are ideal for contour milling, pocketing and shallow slotting. The radius tip leaves a smooth surface finish. Use a roughing end mill first to remove large areas of material quickly. See Eternal Tools range of ball nose end mills ranging from 1mm to 6mm
Roughing End Mills
Great for large surface area work, roughing end mills have numerous serrations (teeth) in the flutes to quickly remove large amounts of material, leaving a rough finish.
They are sometimes referred to as Corn Cob cutters, or Hog Mills - so called after the pig who ‘grinds’ away, or consumes, anything in it’s path.
HSS Roughing End Mills are ideal for quickly removing large amounts of material. Finish by using a Ball nose end mill for a nice finish
Square End Mills
Commonly referred to as Flat End Mills, square end mills produce a sharp edge at the bottom of the slots and pockets of the workpiece.
They are used for general milling applications including slotting, profiling and plunge cutting.
Corner Radius End Mills
Similar to square end mills/flat end mills but these have a round cutting edge also known as bull nose (not to be confused with Ball nose as mentioned above).
They are less prone to chipping and generally have a longer tool life.