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Thread Turning Inserts Technical Section
Carbide Grade Selection
Choose the Carmex grade specifically formulated for your application from the following list:
Coated Grades
HBA Extra-fine sub-micron grade with high toughness, for optimized performance on hardened steels
(H10-H25) and cast iron up to 62HRc, titanium alloys and super alloys (hastelloy, inconel and nickel based
(S10-S25) alloys).
BLU PVD triple layer coated sub-micron grade for stainless steels, cast iron, titanium, non ferrous
(M10-M20) metals and most of the high temperature alloys.
(K05-K20)
(N10-N20)
(S10-S20)
BMA PVD TiAlN coated sub-micrograin grade for stainless steels and exotic materials at medium to high
(P20-P40) cutting speeds.
(K20-K30)
P25C PVD TiN coated grade for treated and hard alloy steels (25 HRc & up) at medium to low cutting
(P15-P35) speeds.
MXC PVD TiN coated micrograin for free cutting untreated alloy steels (below 30 HRc), for stainless
(K10-K20) steels and cast iron.
(P10-P25)
BXC PVD TiN coated grade for low cutting speed.
(P30-P50) Works well with wide range of stainless steels.
(K25-K40)
Uncoated Grades
P30* Carbide grade for carbon and cast steels, works well at medium to low cutting speeds.
(P20-P30)
K20* Carbide grade for non ferrous metals, aluminum and cast iron.
(K10-K30)
* Upon request
Note: Due to our unique and specialized production techniques, Carmex coated inserts provide superior cutting
performance and exceptionally long tool life.
Grade availability per inserts size
Grade HBA BLU BMA P25C MXC BXC P30 K20
06, 08, 11, 16,
11, 16, 11, 16, 06, 08
11, 16, 11, 16, 11, 16, 22, 27,
22, 27, 22, 27, 06, 08 11, 16, 22,
Insert 22, 27 22 22, 27, 33U
33U 33U 27, 33U
sizes 33U,
Type-B
11, 16
Type B - Threading Inserts
A combination of ground profile, and sintered chip-breaker threading inserts.
Unlike most other manufacturers inserts, this combination ensures a consistent
high quality thread, with precise shape and dimensions.
Two different unique styles of chip-breaker were designed to suit the different
specific requirements of Internal threads and External threads.
All of Carmex Type B inserts are made of BMA Sub-Micrograin grade.
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