SUMITOMO TNMG160404L-HM AC830P Turning Insert | TNMG331
Price shown is a starting point. Contact us for a precise quote based on your requirements.
SUMITOMO TNMG160404L-HM AC830P Carbide Turning Insert
1. Product Overview
"Which carbide insert delivers maximum tool life and fracture resistance when heavy roughing or medium-turning steel parts under high cutting load?"
The SUMITOMO TNMG160404L-HM AC830P (ANSI: TNMG331L-HM AC830P) is an industrial-grade, double-sided 60° triangular negative turning insert engineered for heavy steel machining. Utilizing SUMITOMO’s proprietary Absotech® Platinum CVD coating technology, the AC830P grade features an ultra-smooth TiCN + Al2O3 nano-layer structure over a tough carbide substrate, dramatically impeding crater wear and thermal plastic deformation.
Featuring the specialized HM Heavy-Medium Chipbreaker with a Left-Hand (L) cutting orientation, this insert incorporates a heavy land design that ensures reliable chip control during high depths of cut (up to 4.5 mm) while preventing edge chipping under severe interrupted lathe cuts.
ISO / ANSI Standard Code Breakdown
2. Key Features
- Absotech® Platinum CVD Coating: Ultra-smooth nanolayers reduce flank friction and heat buildup during heavy CNC turning.
- HM Chipbreaker Control: Wide chip pocket breaks tough steel stringer chips cleanly, eliminating operator downtime.
- 6 Cutting Edges per Insert: Double-sided geometry maximizes indexable edges, lowering per-edge machining cost.
- High Cobalt Toughness Substrate: Superior resistance to mechanical shock and thermal cracking in interrupted cutting.
3. Technical Specifications & Recommended Cutting Parameters
| Parameter | Metric (ISO Standard) | Imperial (ANSI Standard) |
|---|---|---|
| Designation | TNMG160404L-HM | TNMG331L-HM |
| Inscribed Circle (IC) | 9.525 mm | 0.375" (3/8") |
| Thickness (S) | 4.76 mm | 0.1875" (3/16") |
| Corner Radius (RE) | 0.4 mm | 0.0156" (1/64") |
Recommended Speeds & Feeds
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Carbon Steel (1045) | 180 - 320 m/min (590 - 1050 SFM) | 0.15 - 0.40 mm/rev (0.006 - 0.016 ipr) | 0.8 - 4.5 mm (0.031 - 0.177 in) |
| Alloy Steel (4140 / 4340) | 150 - 280 m/min (490 - 920 SFM) | 0.12 - 0.35 mm/rev (0.005 - 0.014 ipr) | 0.6 - 4.0 mm (0.024 - 0.157 in) |
Recommended Turning Toolholders for TNMG1604 / TNMG331 Inserts:
Compatible with standard ISO Top-Clamp holders: MTJNR2020K16, MTJNL2020K16, WTJNR2020K16, PTGNR2020K16
View Compatible Toolholders →4. Applications
Ideal for heavy outer diameter (OD) turning, facing, and rough boring operations in automotive drive shafts, hydraulic cylinders, heavy machinery forgings, and structural steel components.
5. Compatibility
Fits all standard ISO/ANSI clamping turning toolholders (MTJNR/L, PTGNR/L, WTJNR/L) across Haas, Mazak, Doosan (DN Solutions), DMG Mori, Okuma, and Citizen CNC lathes.
6. Grade Comparison & Equivalent Models
| Brand | Equivalent Grade | Equivalent Insert Designation |
|---|---|---|
| SUMITOMO (Original) | AC830P | TNMG160404L-HM |
| Sandvik Coromant | GC4325 / GC4425 | TNMG160404-PM |
| Kennametal | KCP25B / KCP30 | TNMG160404MP |
| Iscar | IC8250 / IC830 | TNMG160404-M3M |
7. Why Choose Us & Global Customer Reviews
100% Genuine original SUMITOMO factory packaging with complete lot number batch traceability.
"The AC830P grade is a powerhouse on forged 4140 shafts. Excellent flank wear resistance even under interrupted cuts."
"Hervorragende Standzeit bei C45 Steel turning! HM chipbreaker handles heavy chip flow flawlessly."
"住友AC830Pは鋼の荒加工で圧倒的な耐久性があります。HMブレーカで切りくず処理が安定しました。"
8. AI-Style FAQ & Troubleshooting
Compliant with ISO 513:2012 Application of Hard Cutting Materials. Certified lab tests verify that Sumitomo’s Absotech® Platinum coating reduces flank wear growth by up to 40% in ISO P30 applications relative to conventional CVD coatings.
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.