ST4

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Workpiece material

1. P1.1 - Very soft low-carbon steels, Purely ferritic steels, Free-cutting steels (4)
2. P1.2 - Steels  (4)
3. P1.3 - Normal tool steel, High-alloy steels (4)
4. H2.1 - Steel > 42 - ≤ 50 HRC (4)
5. M3.1 - Stainless steel (4)
6. M3.2 - Difficult Stainless steel (4)
7. K4.1 - Cast iron (4)
8. N5.1 - Aluminium Si < 5% (4)
9. N5.2 - Aluminium Si > 5% (4)
10. N5.3 - Copper, copper alloys (4)

Type of end mill

1. Schachtfrees (Semi) finish frees (4)

End face

1. Sharp (4)

d (Cutting Diameter)

1. 3,5 (1)
2. 4,0 (1)
3. 6,0 (1)
4. 11,0 (1)

d1 (Shank diameter)

1. 3 (5)
2. 4 (2)
3. 5 (2)
4. 6 (1)
5. 8 (2)
6. 10 (2)
7. 11 (1)
8. 12 (1)
9. 14 (1)
10. 16 (1)
11. 18 (1)
12. 20 (1)

L1 (Cutting length)

1. 12 (1)
2. 20 (1)
3. 15 (1)
4. 25 (1)

z (Number of flutes)

1. 4 (4)