Korloy TPGH080204L-CRT H01 (ANSI TPG 121.5-2L-CRT) Uncoated Carbide Turning Insert 10pcs | High-Performance CNC Cutting Tool for Aluminum, Non-Ferrous & Plastics
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Korloy TPGH080204L-CRT H01 (ANSI TPG 121.5-2L-CRT) Uncoated Carbide Turning Insert 10pcs
Industrial-Grade Uncoated Carbide Inserts (Pack of 10) for Precision Metric & Imperial CNC Lathe Aluminum & Non-Ferrous Finishing
AEO Quick Answer: The Korloy TPGH080204L-CRT (ANSI: TPG 121.5-2L-CRT) H01 (10pcs pack) is an advanced indexable uncoated carbide turning insert featuring a 60° triangular geometry, 11° positive clearance, left-hand cutting configuration, a reliable 0.4mm corner radius, and Korloy's specialized -CRT chipbreaker. Engineered with the sharp-edged H01 uncoated carbide grade, it excels in aluminum, non-ferrous metals, brass, bronze, and engineering plastics finishing operations requiring mirror-like surface integrity.
1. Product Overview
"Which indexable carbide insert with a 0.4mm nose radius and sharp uncoated cutting edge delivers superior anti-built-up edge performance for aluminum and non-ferrous precision turning?"
The Korloy TPGH080204L-CRT (Metric) / TPG 121.5-2L-CRT (ANSI) in H01 grade (supplied in a 10pcs pack) is engineered for high-precision finishing, shallow profiling, and mirror-surface contouring across aluminum (ISO N), non-ferrous metals, and plastics. The razor-sharp cutting edge of the H01 uncoated grade prevents material adhesion and built-up edge (BUE), while the left-hand -CRT sharp chipbreaker delivers low cutting forces and smooth chip evacuation.
ISO Model Designation Breakdown (TPGH080204L-CRT)
ANSI Model Designation Breakdown (TPG 121.5-2L-CRT)
Looking for matching TPG turning tool holders for this 10pcs insert set?
2. Product Core Advantages
- H01 Uncoated Carbide Grade: Premium micro-grain cemented carbide formulated with an ultra-sharp cutting edge to prevent built-up edge (BUE) in aluminum and non-ferrous machining.
- -CRT Sharp Chipbreaker Geometry: Left-hand positive rake profile designed to ensure ultra-low cutting resistance and immaculate chip flow in non-ferrous finishing passes.
- 0.4mm Versatile Corner Radius: Ideal for precision finishing and fine contouring, offering excellent dimensional accuracy and surface finish quality.
- Value 10-Piece Box: Economically packaged to maintain production efficiency and lower tooling operational expenses.
3. Technical Specifications & Cutting Parameters
| Technical Parameter | Metric Specification (ISO) | Imperial Specification (ANSI) |
|---|---|---|
| Insert Model Code | TPGH080204L-CRT | TPG 121.5-2L-CRT |
| Shape & Clearance Angle | TPGH (60° Triangle, 11° Positive w/ Hole) | TPG (60° Triangle, 11° Positive w/ Hole) |
| Inscribed Circle (IC Size) | 08 Size (~4.76 mm length) | 12 Designation (3/16" IC) |
| Insert Thickness | 02 Code (2.38 mm) | 1.5 Code (3/32" thickness) |
| Corner Radius (RE) | 04 Code (0.4 mm Radius) | 2 Code (~0.4mm Radius) |
Recommended Cutting Parameters (Korloy H01) - Dual-Column Reference
| Workpiece Material Group | Cutting Speed (Vc, m/min) | Feed Rate (fn, mm/rev) & Depth (ap) |
|---|---|---|
| ISO N (Aluminum Alloys & Non-Ferrous) | 250 - 600 m/min | fn: 0.05 - 0.25 mm/rev | ap: 0.1 - 2.5 mm |
| ISO N (Engineering Plastics & Composites) | 200 - 450 m/min | fn: 0.04 - 0.20 mm/rev | ap: 0.1 - 3.0 mm |
4. Product Applications
- Aluminum Alloy Turning: High-speed external finishing and mirror-finish profiling on aerospace and automotive aluminum components.
- Non-Ferrous Machining: Precision finishing on brass, copper, and bronze parts without smearing or edge buildup.
- Internal Boring Operations: Positive 11° clearance geometry ensures chatter-free internal boring bar applications in non-ferrous tubes and housings.
5. Compatibility & Accessories
Tool Holder Compatibility: Fully compatible with ISO and ANSI standard STGCR / STGCL external turning toolholders and internal boring bars configured for TPGH 0802 / TPG 121.5 inserts.
Machine Systems: Designed for high-speed CNC lathes, CNC turning centers, and Swiss-type automatic lathes.
Hardware: Requires standard positive-seat clamping screws and pin-lock systems.
6. Material Comparison: H01 Uncoated Grade vs. Coated Grades
Sharpness & Edge Integrity: H01 uncoated grade features an exceptionally sharp cutting edge that prevents material smearing on gummy non-ferrous metals compared to coated alternatives.
Built-Up Edge Prevention: Eliminates coating flake-off and reduces chemical affinity with aluminum alloys, ensuring pristine surface roughness (Ra).
High-Speed Finishing: Optimized for high cutting velocities (Vc) in non-ferrous manufacturing environments.
7. Why Choose Korloy H01 Tooling?
- Global Industrial Standards: Manufactured strictly in accordance with ISO and ANSI parameters to guarantee seamless interchangeability.
- Uncoated Micro-Grain Precision: H01 grade formulation delivers superior edge sharpness and eliminates aluminum adhesion during high-speed turning.
- Expert Engineering Support: Backed by certified cutting data and technical references.
8. Frequently Asked Questions
Q: What is the difference between TPGH080204L and TPG 121.5-2L?
A: TPGH080204L is the metric ISO standard designation, while TPG 121.5-2L is its exact imperial ANSI equivalent. Both denote identical physical dimensions and left-hand configurations.
Q: How many pieces are included in each order?
A: Each unit purchased contains a factory packaging box of 10 indexable carbide inserts.
Q: Is H01 grade recommended for aluminum machining?
A: Yes, H01 is a specialized uncoated micro-grain carbide grade specifically designed for aluminum and non-ferrous metals to prevent built-up edge and deliver mirror finishes.
Grade Comparison: H01 uncoated grade provides superior edge sharpness and prevents built-up edge in aluminum and non-ferrous finishing compared to coated grades.
Equivalent Models: Fully interchangeable with standard ISO TPGH 080204L and ANSI TPG 121.5-2L turning inserts.
Troubleshooting: If workpiece smearing or edge buildup occurs during aluminum milling or turning, verify coolant concentration and verify H01 sharp cutting edge integrity.
Workpiece Material Matrix: Certified operational performance across ISO N (Aluminum, Non-Ferrous Metals & Plastics).
Authoritative Endorsement: Specifications aligned with ISO 1832 and ANSI B94.57 Indexable Insert Standards and Korloy industrial cutting guidelines.
Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.