ST4, a new super tough PVD coated carbide grade with a thick CrAIN coating that extends tool life providing high hardness and oxidation resistance solving issues related to machining materials such as: 304SS, 17-4PH, and Nitinol. High speed machining applications with ST4 inserts have proven results with stable machining, excellent surface finishes, and extended tool life. This super tough coating combined with the best chip-breakers in the industry will exceed your machining expectations. For front turning (YL,CL,AM3 on positive inserts) and and (UL, ZP on negative inserts), back turning (BM), grooving (GX), cut-off (CX, TH), and ID turning (FG, F1, F05 direct chip evacuation in blind holes).
This grade is made for machining tough stainless-steel materials but can also tackle other difficult applications. A customer machining a 22-inch overall length flexible wire from Nitinol achieved 504 pieces per corner and excellent surface quality using our DCGT32.508MYL ST4 insert running at 62 SFM at a feed of .0005 IPR and .005” DOC. This difficult cut was made easy with the right insert grade and chip-breaker.
In a back turning operation on a cable fitting made of 4140 steel the manufacturer was able to complete 750 pcs. / corner running at 400 SFM and 0.001” feed; machining a .195” LOC on the part. The TBP72FR20M-BM insert in ST4 provided a 30% faster cycle time over the competition.
This grade is made for machining tough stainless-steel materials but can also tackle other difficult applications. A customer machining a 22-inch overall length flexible wire from Nitinol achieved 504 pieces per corner and excellent surface quality using our DCGT32.508MYL ST4 insert running at 62 SFM at a feed of .0005 IPR and .005” DOC. This difficult cut was made easy with the right insert grade and chip-breaker.
In a back turning operation on a cable fitting made of 4140 steel the manufacturer was able to complete 750 pcs. / corner running at 400 SFM and 0.001” feed; machining a .195” LOC on the part. The TBP72FR20M-BM insert in ST4 provided a 30% faster cycle time over the competition.
TFX front turning carbide inserts (wiper style available) for Swiss CNC applications, capable of machining large depths of cut in a single pass (up to 0.197”). The inserts incorporate a special chip-breaker with a sharp cutting edge to provide excellent chip control and surface finishes. TFX inserts are available in DM4 (for titanium, cobalt chrome, heat resistant alloys and stainless steels) and New ST4 (best for stainless steels like 304 & 17-4PH). The corresponding TFT series holders have rigid side screw clamping to ensure stable turning by preventing movement of the insert from z-directional cutting forces. Pair the TFX inserts with a coolant through holder (TFT...-OH2) to improve chip evacuation, surface finish, part tolerance, and tool life. The -OH2 style holders are compatible with new coolant through gangs (on Citizen L20 & D25 CNC machines.)
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