Korloy TCMT16T304-HMP PC9030 Stainless Steel Turning Insert (10pcs)
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The Original Korloy TCMT16T304-HMP PC9030 is a heavy-duty Triangular Indexable Turning Insert specifically engineered to conquer Stainless Steel (M-Group) and Exotic Alloys. Built on a high-toughness substrate with the legendary PC9030 PVD Coating, it excels in resisting thermal cracking and built-up edge (BUE). The HMP (Medium-Finish) Chipbreaker is designed for versatility, offering smooth chip control across a wide range of cutting depths on large-scale workpieces.
Superior for Large Diameter Turning: The TCMT16 size provides the necessary mechanical strength and thermal mass for machining large stainless steel components. PC9030's specialized coating acts as a chemical and thermal barrier, significantly extending tool life in abrasive stainless applications.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Designation | TCMT16T304-HMP |
| Corner Radius (r) | 0.4 mm (Precision Finishing) |
| Grade | PC9030 (Premium PVD for Stainless) |
| Insert Thickness | 3.97 mm |
Core Performance Benefits:
- Engineered for M-Group: Specifically designed to handle the high-temperature and work-hardening nature of stainless steel alloys.
- Advanced HMP Geometry: Optimized rake angles reduce cutting pressure, which helps maintain lower workpiece temperatures and prevents deformation.
- Ultra-Smooth PVD Coating: Reduces friction between the chip and the rake face, preventing the "sticking" common with austenitic stainless steels.
- Edge Security: The 16mm insert size provides excellent stability for large boring bars, even under slightly unstable conditions.
Recommended Cutting Parameters:
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Stainless Steel (304 / 316) | 90 - 200 m/min | 0.08 - 0.25 mm/rev | 0.5 - 3.5 mm |
| Duplex Stainless | 60 - 130 m/min | 0.10 - 0.20 mm/rev | 0.5 - 2.5 mm |
| Inconel / Titanium | 30 - 70 m/min | 0.06 - 0.15 mm/rev | 0.3 - 2.0 mm |
Compatible Tooling Systems:
Pairs perfectly with large triangular toolholders:
- External Turning: STGCR 2020K16 / STGCR 2525M16
- Internal Boring: S20R-STUCR16 / S25S-STUCR16 / S32T-STUCR16
Machinist Tip: Mastering Heavy Stainless Cuts
Why the TCMT16 PC9030 is the professional's choice:
Anti-Built-Up Edge. PVD grades like PC9030 are essential for stainless because they have sharper edges and smoother coatings than CVD grades. This prevents the stainless steel from "welding" to the tool, which is the #1 cause of failure in 16mm inserts.
The Generalist. Use PC5300 only if your daily work switches frequently between stainless, steel, and cast iron. If your machine is dedicated to stainless production, stick with PC9030 for superior tool life.
Pro Advice: When boring with a TCMT16 insert, always use high-pressure coolant if possible to clear chips. Stainless chips are tough and stringy; re-cutting them will quickly destroy your finishing edge.
Packaging: 10 pieces per box.
Korloy TCMT16T304-HMP technical data, best insert for large 304 stainless shafts, TCMT16T304 stainless steel feed and speed, PC9030 vs PC5300 for 316 stainless, heavy duty boring bar inserts for duplex stainless