Page 97 - Carmex - Inch Catalog 2022

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Thread Turning Inserts Technical Section

Recommended cutting speed (ft/min) for thread turning inserts

Carbide Grades
ISO
Standard Material Condition
HBA BLU BMA P25C MXC BXC K20 P30
<0.25%C Annealed
≥0.25%C Annealed
Non-Alloy Steel Quenched
and Cast Steel, <0.55%C & Tempered 360-690 390-590 330-590 390-590 230-490 165-425
Free Cutting
Steel ≥0.55%C Annealed
Quenched
& Tempered
P
Low Alloy Steel and Cast Annealed
Steel (less than 5% Quenched 295-460 260-425 230-394 230-390 195-295 165-260
alloying elements) & Tempered
Annealed
High Alloy Steel, Cast Quenched 230-295 195-260 165-195 180-230 165-195 130-165
Steel, and Tool Steel & Tempered
Ferritic /
Stainless Steel Martensitic
M 360-525 295-425 195-295 195-295 165-260 165-260
and Cast Steel Martensitic
Austenitic
Ferritic /
Cast Iron Nodular (GGG) Pearlitic 390-490 330-425 260-360 195-295
Pearlitic
K Ferritic
Grey Cast Iron (GG) 460-490 395-425 395-330 215-280
Pearlitic
Ferritic
Malleable Cast Iron 360-460 330-425 260-330 195-280
Pearlitic
Not
Aluminum-Wrought Alloy Cureable 2300- 1970-2620 1480-1970 1970-2620 1150-1640
3280
Cured
Not
<=12% Si Cureable
Aluminum-Cast, Cured 920-2460 650-1800 490-1150 660-1800 360-985
Alloyed
>12% Si High
Temperature
N Free
>1% Pb
Cutting
Copper Alloys Brass 625-1150 490-820 360-590 490-820 295-490
Electrolytic
Copper
Duroplastics,
Fiber Plastics
Non Metallic 655-985 490-690 330-655 360-490
Hard
Rubber
Annealed
High Temp. Fe based Cured
Alloys, Super Ni or Co Annealed 65-260 100-215 80-195
Alloys Cured
S based Cast
Alpha
Titanium Alloys +Beta Alloys 100-195 130-165 115-145 115-145
Cured
Hardened
45-50 HRc
Hardened
Hardened Steel 51-55 HRc 100-195 130-165 115-145
H Hardened
56-62 HRc
Chilled Cast Iron Cast 65-165 100-130 80-115
Cast Iron Hardened 65-130 65-100 50-80

A04-3