STR4

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Workpiece material

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

Type of end mill

1. Toric end mill (5)
2. Schachtfrees (Semi) finish frees (5)

End face

1. Corner radius (5)

d (Cutting Diameter)

1. 3,0 (1)
2. 4,0 (2)
3. 6,0 (3)
4. 8,0 (6)
5. 10,0 (5)
6. 12,0 (4)
7. 16,0 (4)
8. 5,0 (2)
9. 20,0 (4)

d1 (Shank diameter)

1. 6 (5)

L1 (Cutting length)

1. 20 (5)

z (Number of flutes)

1. 4 (5)