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Slot drills short, 3-fluted centre cutting, 30°, type N, Weldon shank

230418H High-speed steel HSS Co8 DIN 327K

Cutting conditions Product attributes Product description

New

D e 8	d h 6	l1	l2	Z	Item code	On stock
11,7	12	70	13	3	230418H.117	Yes
13,7	12	73	16	3	230418H.137	Yes
15,7	16	79	19	3	230418H.157	Yes
17,7	16	79	19	3	230418H.177	Yes
19,7	20	88	22	3	230418H.197	Yes
21,7	20	88	22	3	230418H.217	Yes
24,7	25	102	26	3	230418H.247	Yes

Cutting conditions

Material	Strength	Ap	Ae	Vc	fz(mm/z) Ø 12	Ø 16	Ø 18	Ø 20	Ø 25
P.1 | Free-cutting steels, general construction steels	≤ 600 N/mm²	0,5xD	1xD	45	0.044	0.058	0.065	0.073	0.091
P.2 | General construction steels, steel castings	≤ 850 N/mm²	0,5xD	1xD	39	0.044	0.058	0.065	0.073	0.091
P.3 | Tool steels low alloyed	≤ 1100 N/mm²	0,5xD	1xD	24	0.044	0.058	0.065	0.073	0.091
P.4 | Heat treatable steels	≤ 900 N/mm²	0,5xD	1xD	30	0.044	0.058	0.065	0.073	0.091
M.2 | Corrosion- and acid-proof steels	750 - 850 N/mm²	0,5xD	1xD	15	0.044	0.058	0.065	0.073	0.091
K.1 | Cast iron	< 240 HB	0,5xD	1xD	35	0.044	0.058	0.065	0.073	0.091
K.2 | Cast iron	> 240 HB	0,5xD	1xD	25	0.044	0.058	0.065	0.073	0.091
N.2 | Aluminium cast alloys Si	≤ 600 N/mm²	0,5xD	1xD	160-300	0.0572	0.0754	0.0845	0.0949	0.1183
N.4 | Copper–zinc alloys, copper–tin alloys	≤ 800 N/mm²	0,5xD	1xD	80-120	0.044	0.058	0.065	0.073	0.091
S.2 | Titanium, Titanium alloys	≤ 1250 N/mm²	0,5xD	1xD	12	0.0308	0.0406	0.0455	0.0511	0.0637

Calculations of cutting conditions

Product attributes

Clamping element

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Straight shank with clamping flat (Weldon) according to DIN 1835 B.

Tool geometry

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Helix angle = 30°. Rake angle = 12°.

End face design

Type N

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Universal usage. Suitable for materials up to strength 900 MPa.

Feed direction possibility

Material HSS Co8

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Extra high performance high speed steel with good toughness and great temperature resistance. It is applicable especially for milling of materials with high strength, austenitic steels, steels for warm working, etc.