CPT

®

Mini Chamfer and Countersink

Countersink

Cutting Data

Feed fz mm/tooth

Cutting Speed Vc (m/min)

d

ISO

Materials Class

Low & Medium Carbon Steels <0.55%C

120 - 240

Ø3-Ø4 0.04 - 0.06

P

High Carbon Steels ≥0.55%C

80 - 180

Ø5-Ø6 0.05 - 0.07

Alloy Steels, Treated Steels

50 - 120

Ø8

0.06 - 0.08

Stainless Steel-Free Cutting

70 - 100

M

Stainless Steel-Austenitic

60 - 140

Ø10

0.07 - 0.10

Cast Steels

70 - 100

Ø12

0.08 - 0.15

K Cast Iron

80 - 160

Aluminum ≤6%Si, Copper

150 - 500

N

Aluminum >6%Si

100 - 250

Synthetics, duroplastics, thermoplastics

80 - 200

S Nickel alloys, Titanium alloys.

30 - 90

Hardened Steel, 45-50 HRc

60 - 70

H

Hardened Steel, 51-58 HRc

50 - 60

B15-10

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