Milling Milling Inserts
Grade Application Guide
Milling grade application
Materials
PVD coated
CVD coated Uncoated
Tensile strength (N/mm 2 )
Material classification
Hardness (HB)
ISO
AP251U AP351U AP351M AP403M AP251K AP403S AP151H AC251P AC151K AC301K
AW100K
◐ ◐ ◐ ◐ ◐ ◐ ◐ ◐ ◐ ◐
<600
<180
● ●
-
-
-
●
-
-
-
Unalloyed steel
<950
<280
● ●
-
-
-
●
-
-
-
700-950 200-280
● ●
-
-
-
●
-
-
-
Alloyed steel
950-1200 280-355
● ●
-
-
-
●
-
-
-
1200-1400 355-415
● ●
-
-
-
●
-
-
-
Duplex stainless steel Austenitic stainless steel Precipitation- hardening stainless steel
◐ ◐ ◐ ◐
◐ ◐
778
230
● ●
-
-
-
-
-
-
675
200
● ●
-
-
-
-
-
-
◐ ◐
◐
1013
300
● ●
-
-
-
-
-
-
◐ ◐ ◐ ◐ ◐ ◐
Grey cast iron
700
220
-
-
-
-
●
-
● ●
-
Nodular cast iron Malleable cast iron
880
260
-
-
-
-
●
-
● ●
-
800
250
-
-
-
-
●
-
● ●
-
Aluminum
260
75
-
-
-
-
-
-
-
-
-
-
●
Aluminum alloy
447
130
-
-
-
-
-
-
-
-
-
-
●
◐ ◐ ◐ ◐ ◐ ◐ ◐ ◐ ◐ ◐ ◐ ◐
Fe-based alloy
943
280
-
-
●
-
-
-
-
-
Co-based alloy
1076
320
-
-
●
-
-
-
-
-
Ni-based alloy
1177
350
-
-
●
-
-
-
-
-
◐
Ti-alloy
1262
370
-
-
●
-
-
-
-
Hardened steel
50-60HRC
-
-
-
-
-
-
-
●
-
-
-
-
Chilled cast iron
55HRC
-
-
-
-
-
-
-
●
-
-
-
-
● 1st choice ◐ 2nd choice -
Inapplicable
397
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