Korloy TPGH080204L-CRT PC5300 (R0.4) PVD Insert for Stainless & Alloy Steel (10pcs)
30-Day Free Returns
Free Worldwide Shipping
The Original Korloy TPGH080204L-CRT PC5300 (ANSI: TPGH 1.51.51L-CRT) is a high-performance PVD Coated Turning Insert engineered for Precision Finishing across a wide spectrum of difficult-to-cut materials. Powered by the PC5300 Universal Grade, this insert is specifically optimized for Stainless Steel (M), Titanium & Heat Resistant Alloys (S), and Carbon Steel (P). The 0.4mm radius provides enhanced structural integrity, making it the perfect choice for medium-duty precision work on Swiss-type CNC lathes.
Superior Edge Reliability: PC5300 features a fine-grained substrate and an advanced TiAlN PVD coating. This combination offers extreme resistance to built-up edge (BUE) and thermal cracking, which are the most common failure modes when machining gummy materials like 300-series stainless steel.
Technical Specifications (Metric & Imperial):
| ISO Designation | TPGH 080204L-CRT |
| ANSI Designation | TPGH 1.51.51L-CRT |
| Inscribed Circle (IC) | 4.76 mm / (3/16") |
| Thickness (S) | 2.38 mm / (3/32") |
| Corner Radius (r) | 0.4 mm / (0.016") |
| Grade | PC5300 (Universal PVD Specialist) |
Core Performance Benefits:
- Enhanced Edge Strength: The R0.4 radius is more robust than R0.2, allowing for higher feed rates and better resistance to mechanical shocks.
- Anti-Adhesion Coating: The smooth PVD layer reduces friction, preventing "welding" of gummy stainless steel to the tool tip.
- Precision CRT Geometry: Sharp cutting action ensures dimensional accuracy even on small, thin-walled components.
- Universal Grade Strategy: Simplifies inventory by using a single grade that performs excellently on multiple material groups.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Stainless Steel (304/316) | 90-190 m/min | 0.05-0.15 mm/rev | 0.10-0.7 mm |
| Alloy Steel / 4140 | 130-240 m/min | 0.05-0.18 mm/rev | 0.10-0.8 mm |
| Inconel / Super Alloys | 30-60 m/min | 0.04-0.12 mm/rev | 0.10-0.5 mm |
Compatible Tooling Systems:
Fits all standard 08-size triangular positive tool holders:
- External Precision Holders: STGCR 1010H08 / STGCR 1212H08
- Boring Bars for Small Holes: S08K-STUPR08 / S10K-STUPR08
Machinist Tip: Choosing Between 02 and 04 Radius
Optimizing your TPGH precision finishing:
Best for Productivity. The 0.4mm radius allows for higher feed rates and is much more resistant to chipping during interrupted cuts or when cutting through slightly rougher surfaces.
Best for Fine Detail. Choose the 0.2mm version only if you have extremely tight internal corner requirements or if the workpiece is so thin that tool pressure causes deflection/vibration.
Pro Advice: When machining titanium, keep the cutting zone saturated with coolant. While PC5300 has high heat resistance, titanium’s low thermal conductivity can destroy any edge if allowed to overheat.
Packaging: 10 pieces per box.
TPGH 080204L for 316 stainless steel, Korloy PC5300 turning parameters, 0.4mm radius precision PVD inserts, Swiss lathe tooling for medical grade stainless, TPGH 1.51.51L-CRT cross reference