Double ended twist drills for welding spots, code VN40225, diameter 8 mm
| D | l1 | l2 | Item code | On stock |
|---|---|---|---|---|
| 8 | 79 | 27 | VN40225.0800 | Yes |
Cutting conditions
Material |
Strength |
Vc |
fz(mm/r) Ø5 |
Ø6,3 |
Ø8 |
Ø10 |
|---|---|---|---|---|---|---|
| P.1 | Free-cutting steels, general construction steels | ≤ 600 N/mm² | 35 | 0,1 | 0,125 | 0,16 | 0,2 |
| P.2 | General construction steels, steel castings | ≤ 850 N/mm² | 30 | 0,1 | 0,125 | 0,16 | 0,2 |
| P.3 | Tool steels low alloyed | ≤ 1100 N/mm² | 18 | 0,08 | 0,1 | 0,125 | 0,16 |
| P.4 | Heat treatable steels | ≤ 900 N/mm² | 20 | 0,08 | 0,1 | 0,125 | 0,16 |
| P.5 | Tool steels high alloyed | ≤ 1100 N/mm² | 18 | 0,08 | 0,1 | 0,125 | 0,16 |
| P.6 | Tool and treated steels | > 1100 N/mm² | 18 | 0,08 | 0,1 | 0,125 | 0,16 |
| M.1 | Corrosion- and acid-proof steels | ≤ 750 N/mm² | 20 | 0,1 | 0,125 | 0,16 | 0,2 |
| M.2 | Corrosion- and acid-proof steels | 750 - 850 N/mm² | 20 | 0,1 | 0,125 | 0,16 | 0,2 |
| M.3 | Corrosion- and acid-proof steels | > 850 N/mm² | 20 | 0,1 | 0,125 | 0,16 | 0,2 |
| K.1 | Cast iron | ≤ 820 N/mm² (≤ 240 HB) | 35 | 0,125 | 0,16 | 0,2 | 0,25 |
| K.2 | Cast iron | > 800 N/mm² (> 240 HB) | 25 | 0,125 | 0,16 | 0,2 | 0,25 |
| N.1 | Aluminium, Aluminium cast alloys Si | ≤ 400 N/mm² | 100 | 0,16 | 0,2 | 0,25 | 0,315 |
| N.2 | Aluminium cast alloys Si | ≤ 600 N/mm² | 70 | 0,16 | 0,2 | 0,25 | 0,315 |
| N.3 | Aluminium cast alloys Si | ≤ 600 N/mm² | 60 | 0,16 | 0,2 | 0,25 | 0,315 |
| N.4 | Cooper-zinc alloys, cooper-tin alloys | ≤ 800 N/mm² | 60 | 0,125 | 0,16 | 0,2 | 0,25 |
| S.1 | Chrome-nickel alloys | ≤ 1500 N/mm² | 10 | 0,04 | 0,05 | 0,063 | 0,08 |
| S.2 | Titanium, Titanium alloys | ≤ 1250 N/mm² | 20 | 0,04 | 0,05 | 0,063 | 0,08 |
Product attributes
Lead of helix 25° - 30°.
Very high performance high speed steel with good toughness for milling cutters and for milling of materials up to the strength of 1200 MPa.
Point angle 180° with centre point, DIN 1412 form E.