Page 386 - Carmex - Inch Catalog 2022

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Mill-Thread Technical Section

Cutting Data

Slim MT type

Advanced NEW submicron carbide grade with multi-layer PVD coating, provides high
MT17
performance in all machining conditions. The new grade ensures high abrasive wear re-
sistance, machining wide range of materials including steels, tough and difficult materials
and high alloyed steels.

Cutting Conditions
ISO Material Conditions
Cutting Speed Feed Rate
(ft/min) (inch/tooth)
Annealed < 0.25% C 360-720
Annealed ≥ 0.25% C 330-690
Non-Alloy Steel and Cast Steel, Annealed ≥ 0.55% C 295-490 ( .0022 * D ) /.87
Free Cutting Steel
Quenched & Tempered < 0.55% C 230-460
Quenched & Tempered ≥ 0.55% C 180-230
P Low Alloy Steel and Cast Steel Annealed 200-360
(less than 5 % alloying elements Quenched & Tempered 200-295
( .0022 * D ) /.87
Annealed 180-295
High Alloy Steel, Cast Steel, and
Tool Steel
Quenched & Tempered 150-260
Ferritic 295-655
Martensitic 260-520 ( .0022 * D ) /.87
M Stainless Steel and Cast Steel Austenitic 200-360
High alloy Austenitic & Duplex 130-230 ( .0018 * D ) /.87
Ferritic 295-410
Cast Iron Nodular (GGG)
Pearlitic 295-360
Ferritic 360-475
K Grey Cast Iron (GG) (.0022 * D ) /.87
Pearlitic 260-410
Ferritic 360-410
Malleable Cast Iron
Pearlitic 260-390

Not Cureable 440-1150
Aluminum-Wrought Alloy
Cured 330-885
Not Cureable ≤ 12% Si 295-885
Aluminum-Cast, Alloyed Cured 295-740
N High Temperature > 12% Si 295-590 ( .0020 * D ) /.87
Free Cutting > 1 % Pb 230-740
Copper Alloys Brass 230-590
Electrolytic Copper 230-885
Duroplastics, Fiber Plastics 230-885
Non Metalic
Hard Rubber 230-885
High Temperature/Super Alloys Annealed 100-160
(Fe based) Cured

Annealed
S High Temperature/Super Alloys ( .0015 * D ) /.87
(Ni or Co based) Cured 80-150
Cast
Titanium Alloys Alpha + Beta Alloys Cured 100-130
D= Cutting diameter.
B12-6