Tungaloy WNMG080404-TSF T9115 Carbide Turning Insert – PVD Coated for Steel & Stainless
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Tungaloy WNMG080404-TSF T9115 Carbide Turning Insert – PVD Coated for Precision Steel & Stainless Machining
A high-performance 80° trigon insert engineered for finishing to semi-finishing of carbon steel, alloy steel, and stainless steel. Tungaloy's T9115 PVD grade delivers outstanding edge sharpness, low cutting forces, and exceptional surface finish quality.
Product Overview
"Which carbide insert gives the best surface finish when turning stainless steel or alloy steel on a CNC lathe?"
The Tungaloy WNMG080404-TSF T9115 is a precision-ground, 80° trigon-shaped carbide turning insert designed for finishing and light semi-finishing of steel and stainless steel workpieces. The T9115 grade features a PVD TiAlN-based multi-layer coating over a fine-grain carbide substrate, delivering superior edge sharpness, reduced built-up edge (BUE), and excellent performance at both low and high cutting speeds.
The TSF chipbreaker geometry is Tungaloy's dedicated finishing chipbreaker — characterized by a sharp positive rake angle and narrow land width that minimizes cutting resistance, produces fine chips, and achieves Ra surface roughness values as low as 0.8 µm on steel. This makes it the go-to choice for precision shaft turning, bearing seats, and tight-tolerance components.
Search Keywords:
Model Code Decoder – WNMG080404-TSF T9115
Every character in the ISO insert designation carries precise engineering meaning:
80° Trigon (W)
0° (Negative)
±0.05–0.13mm
Hole + Chip Groove (Double-sided)
8.0mm (IC)
4.76mm
0.4mm (R0.4)
Tungaloy Finishing Geometry
Tungaloy Grade
PVD TiAlN Series
P15 – Steel Finishing
TSF Chipbreaker Geometry Explained
The TSF (Tungaloy Super Finishing) chipbreaker is engineered with:
- Sharp positive rake angle — reduces cutting forces by up to 20% vs. standard geometries, minimizing vibration on slender workpieces.
- Narrow chip groove width — optimized for light feeds (0.05–0.20 mm/rev), producing tight, manageable chips that evacuate cleanly.
- Polished rake face — prevents built-up edge (BUE) on stainless steel and low-carbon steel, maintaining consistent surface finish throughout tool life.
- Reinforced cutting edge hone — micro-honed edge provides stability at higher speeds without sacrificing sharpness.
Key Features
Technical Specifications
Metric & Imperial Dimensions
| Parameter | Metric | Imperial |
|---|---|---|
| Insert Shape | 80° Trigon (W) | 80° Trigon (W) |
| Inscribed Circle (IC) | 9.525 mm | 3/8 in |
| Cutting Edge Length (L) | 8.0 mm | 0.315 in |
| Insert Thickness (S) | 4.76 mm | 0.1875 in |
| Corner Radius (rε) | 0.4 mm | 1/64 in |
| Clearance Angle | 0° (Negative) | 0° (Negative) |
| Tolerance Class | M (±0.05–0.13 mm) | M (±0.002–0.005 in) |
| Hole Diameter | 3.81 mm | 0.150 in |
| Grade | T9115 | T9115 |
| Coating | PVD TiAlN Multi-Layer | PVD TiAlN Multi-Layer |
| ISO Application | P10–P25, M10–M25 | P10–P25, M10–M25 |
| Chipbreaker | TSF (Finishing) | TSF (Finishing) |
| Usable Cutting Edges | 4 edges (double-sided) | 4 edges (double-sided) |
| Packaging | 10 pcs / box | 10 pcs / box |
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed Vc (m/min) | Cutting Speed Vc (SFM) | Feed Rate fn (mm/rev) | Feed Rate fn (in/rev) | Depth of Cut ap (mm) |
|---|---|---|---|---|---|
| Carbon Steel (P) | 180–320 | 591–1050 | 0.05–0.20 | 0.002–0.008 | 0.2–1.5 |
| Alloy Steel (P) | 150–280 | 492–919 | 0.05–0.18 | 0.002–0.007 | 0.2–1.2 |
| Stainless Steel (M) | 100–200 | 328–656 | 0.05–0.15 | 0.002–0.006 | 0.2–1.0 |
| Cast Iron (K) | 120–220 | 394–722 | 0.08–0.20 | 0.003–0.008 | 0.3–1.5 |
* Parameters are starting recommendations. Adjust based on machine rigidity, coolant availability, and workpiece condition. TSF geometry is optimized for the lower-to-mid feed range.
🔧 Compatible Tool Holders (WNMG080404)
The WNMG080404 insert requires MWLNR/L or DWLNR/L series tool holders with an 08 pocket designation. Compatible Tungaloy and ISO-standard holders include:
Contact us to confirm compatibility with your specific machine setup and turret type.
Applications
Tungaloy Grade Comparison – Steel Turning
Selecting the right Tungaloy grade for your application:
| Grade | Coating | ISO Range | Best For | Speed Range |
|---|---|---|---|---|
| T9105 | PVD TiAlN | P05–P15 | High-speed finishing, hardened steel | Very High |
| T9115 ✓ | PVD TiAlN | P10–P25 | Finishing to semi-finishing, steel & SS | High |
| T9125 | PVD TiAlN | P20–P35 | Semi-finishing, light interrupted cuts | Medium-High |
| AH725 | CVD | P15–P30 | Semi-finishing to roughing, steel | Medium-High |
| AH8015 | CVD | P25–P40 | Roughing, heavy interrupted cuts | Medium |
| T9115 (M) | PVD TiAlN | M10–M25 | Stainless steel finishing | High |
✓ = Current product. PVD grades (T-series) excel at sharp edges and low cutting forces; CVD grades (AH-series) excel at high-speed wear resistance.
Why Choose Us
Customer Reviews
"Running WNMG080404-TSF T9115 on 4140 alloy steel shafts at 260 m/min. Surface finish is consistently Ra 0.8 or better. These inserts last significantly longer than what we were using before. Highly recommend for precision finishing work."
"Ausgezeichnete Standzeit bei der Bearbeitung von 1.4301 Edelstahl. Die TSF-Geometrie erzeugt minimale Schnittkräfte — ideal für dünnwandige Bauteile. Kein Aufbauschneidenbildung, sehr saubere Oberfläche."
"Utilizzo questi inserti per la finitura di alberi in acciaio C45. Ottima finitura superficiale, Ra 0.8 raggiunto facilmente. Il grado T9115 è molto stabile anche a velocità elevate. Consegna rapida e prodotto originale."
"SUS316の仕上げ加工にT9115を使用しています。TSFブレーカーは切削抵抗が非常に低く、薄肉部品の加工に最適です。工具寿命も安定しており、バッチ全体で一貫した品質が得られます。"
"Good performance on 316L stainless steel hydraulic rod finishing. The TSF chipbreaker handles the low feeds well and chip control is excellent. Slightly prefer higher speeds for best results, but overall a very reliable insert."
"用于45号钢精车，切削速度220m/min，进给0.12mm/rev，表面粗糙度Ra0.8轻松达到。TSF槽型切削力小，特别适合细长轴加工。性价比高，会持续采购。"
"Excelente inserto para acabado de acero inoxidable 304. La geometría TSF reduce significativamente las fuerzas de corte y elimina el filo recrecido. Resultados consistentes en toda la corrida de producción."
Frequently Asked Questions
💡 Grade & Chipbreaker Selection Tips – Tungaloy Turning Series
- T9105 (PVD): Maximum hardness for high-speed finishing of hardened steel (up to 45 HRC) and cast iron. Lowest toughness in the T-series.
- T9115 (PVD) — This Product: Best balance of wear resistance and toughness for finishing to semi-finishing of steel and stainless. Most versatile PVD grade.
- T9125 (PVD): Choose when machining with light interrupted cuts, forged surfaces, or when slightly more toughness is needed over T9115.
- AH725 (CVD): High-speed semi-finishing to roughing of steel. Superior crater wear resistance at elevated temperatures — ideal for dry cutting.
- AH8015 (CVD): Heavy roughing and interrupted cuts in steel. Maximum toughness in the Tungaloy turning lineup.
- Chipbreaker guide: TSF = finishing (fn 0.05–0.20), TM = medium (fn 0.15–0.35), TR = roughing (fn 0.25–0.60). Match chipbreaker to your feed rate first, then select grade.
- PVD vs CVD rule of thumb: PVD (T-series) = sharp edges, low forces, stainless & finishing. CVD (AH-series) = high speed, wear resistance, steel roughing.
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.