Korloy TNMG160408-HS PC9030 (TNMG 332-HS) Stainless Steel Semi-Finishing Insert (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy TNMG160408-HS PC9030 (ANSI: TNMG 332-HS) is a high-performance PVD Coated Semi-Finishing Insert engineered specifically for Stainless Steel (M-Group) and Super Alloys. Built with the premium PC9030 Grade, this insert features a specialized TiAlN coating that offers industry-leading resistance to chemical adhesion and heat. The HS (High-Sharpness) geometry, combined with a 0.8mm radius, provides a stronger cutting edge than its 0.4mm counterpart, making it perfect for long-life machining in demanding stainless applications.
Superior Edge Strength: Stainless steel turning often results in rapid flank wear and chipping. The HS chipbreaker "slices" through the material to reduce work hardening, while the 0.8mm radius offers the extra stability needed for higher feed rates on 304, 316, and Duplex steels.
Technical Specifications (Metric & Imperial):
| ISO Designation | TNMG 160408-HS |
| ANSI Designation | TNMG 332-HS |
| Inscribed Circle (IC) | 9.525 mm / (3/8") |
| Thickness (S) | 4.76 mm / (3/16") |
| Corner Radius (r) | 0.8 mm / (1/32") |
| Grade | PC9030 (Universal Stainless Specialist) |
Core Performance Benefits:
- Optimized PVD Coating: Nano-layered TiAlN coating prevents built-up edge and ensures consistent finishes over long production cycles.
- Reduced Cutting Forces: The sharp HS geometry minimizes radial pressure, reducing vibration and chatter.
- Robust 0.8mm Radius: Provides a durable cutting edge that handles moderate feed rates (up to 0.35 mm/rev) with ease.
- M-Group Versatility: Excels in all stainless steel series (200, 300, 400) and heat-resistant super alloys.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Austenitic Stainless (304/316) | 110-190 m/min | 0.15-0.35 mm/rev | 0.5-2.5 mm |
| Martensitic Stainless (420/440C) | 100-180 m/min | 0.12-0.30 mm/rev | 0.5-2.2 mm |
Compatible Tooling Systems:
Fits all standard TNMG 16-size (3-size ANSI) negative tool holders:
- External Holders: MTJNR 2020K16 / MTJNR 2525M16 (ANSI 12-4B / 16-4D)
- Internal Boring Bars: S25S-WTJNR16 / S32T-WTJNR16
Machinist Tip: HS vs. HM in Stainless
Choosing the right geometry for your job:
Sharp & Clean. Best for finishing and semi-finishing. Its sharp rake angle prevents the "gummy" material from pushing, resulting in a cleaner surface finish and lower vibration.
Durability Focused. Best for skin cuts on castings or roughing passes where you encounter uneven surfaces. HM has a stronger edge but may cause more heat and vibration on fine finishing passes.
Pro Advice: For the best surface finish with a 0.8mm radius, ensure your feed rate is at least 0.2mm/rev. This forces the chip to break against the chipbreaker and keeps the cutting edge from simply rubbing the material.
Packaging: 10 pieces per box.
TNMG 160408-HS for 304 stainless steel turning, best lathe inserts for stainless steel finishing, Korloy PC9030 grade properties, TNMG 332-HS stainless steel feed rates, high-quality PVD inserts for 316 stainless
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.