Shell end mills, semicoarse teeth, type N, code 620275, diameter 40 mm

620275.040 High-speed steel HSS Co5 DIN 1880

D js 16	d H 7	l₁	Z	Item code	On stock
40	16	32	6	620275.040	No

Cutting conditions

Material	Strength	A_p	A_e	V_c	fz(mm/z) Ø 40	Ø 50	Ø 63	Ø 80	Ø 100	Ø 125
P.1 \| Free-cutting steels, general construction steels	≤ 600 N/mm²	0,8xl₁	0,75xD	37.5	0.08	0.085	0.1	0.105	0.11	0.115
P.2 \| General construction steels, steel castings	≤ 850 N/mm²	0,8xl₁	0,75xD	32.5	0.08	0.085	0.1	0.105	0.11	0.115
P.3 \| Tool steels low alloyed	≤ 1100 N/mm²	0,8xl₁	0,75xD	18	0.08	0.085	0.1	0.105	0.11	0.115
P.4 \| Heat treatable steels	≤ 900 N/mm²	0,8xl₁	0,75xD	25	0.08	0.085	0.1	0.105	0.11	0.115
P.5 \| Tool steels high alloyed	≤ 1100 N/mm²	0,8xl₁	0,75xD	18	0.08	0.085	0.1	0.105	0.11	0.115
M.2 \| Corrosion- and acid-proof steels	750 - 850 N/mm²	0,8xl₁	0,75xD	10	0.08	0.085	0.1	0.105	0.11	0.115
K.2 \| Cast iron (> 240 HB)	> 800 N/mm²	0,8xl₁	0,75xD	22	0.08	0.085	0.1	0.105	0.11	0.115

Calculations of cutting conditions

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Straight bore with standard keyway and driving slot according to DIN 138.

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Helix angle = 30°. Rake angle = 12°.

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Very high performance high speed steel with good toughness for milling cutters and for milling of materials up to the strength of 1200 MPa.

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