ZCC.CT TCMT110204-HM YBM251 Carbide Turning Inserts for Stainless Steel
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ZCC.CT TCMT110204-HM YBM251 Precision Insert
The Ultimate Choice for Stainless Steel (ISO M) Medium Machining
Product Overview
"Which carbide insert grade provides the longest tool life and best chip control for turning 304 and 316 stainless steel under medium cutting conditions?"
The ZCC.CT TCMT110204-HM YBM251 is a specialized triangular turning insert designed for ISO M (Stainless Steel). Utilizing the advanced YBM251 grade, it features a thick CVD coating combined with a high-toughness substrate to resist thermal cracking and chemical wear. The -HM chipbreaker geometry is optimized for medium machining, offering a wide chip-breaking range that excels in managing the "stringy" chips typical of austenitic stainless steels.
Core Industrial Advantages
Technical Specifications
Model Designation Breakdown
Triangular
7° Relief
Tolerance
With Hole
11mm Edge
2.38mm Thk
0.4mm Rad
Medium Cut
| Standard | Model Number |
|---|---|
| Metric (ISO) | TCMT 11 02 04-HM |
| Imperial (ANSI) | TCMT 2 1.5 1-HM |
Recommended Cutting Parameters
| Workpiece Material | Speed (Vc m/min) | Feed (f mm/rev) |
|---|---|---|
| 304/316 Stainless | 160 - 280 | 0.10 - 0.25 |
| Duplex Stainless | 100 - 180 | 0.12 - 0.22 |
Required Boring Bar / Tool Holder:
Applications
- Internal Boring: Excellent for semi-finishing of stainless steel tubes and bores.
- External Turning: Ideal for shaft machining and general valve production.
- Medium Machining: Specifically engineered for depth of cuts (Ap) between 0.5mm and 2.5mm.
Compatibility
This insert fits all industry-standard ISO STGCR/L or S-STFCR/L tool holders. Recommended for CNC Lathes, Vertical Turret Lathes (VTL), and Boring machines.
ZCC.CT Stainless Steel Grade Matrix
| Grade | Coating Type | Best Use Case |
|---|---|---|
| YBM251 (Current) | CVD | General Purpose / Stable Medium Cut |
| YBM151 | CVD | High-Speed Finishing / Continuous Cut |
| YBS103 | PVD | Super Alloys / Heat Resistant Steel |
Global Verified User Reviews
"Perfect for 316 Stainless"
We swapped out our high-cost European inserts for YBM251. The tool life is nearly identical but at half the cost. Chip control is superb.
— David K., USA 🇺🇸"Stabilita Eccellente"
Grade molto stabile per lavorazione di acciaio inossidabile. Molto soddisfatto della finitura superficiale.
— Alessandro B., Italy 🇮🇹"Reliable for Batch Runs"
Consistently get 20+ pieces per edge on duplex shafts. The HM chipbreaker makes all the difference.
— Johann S., Germany 🇩🇪Expert CNC FAQ
Q: Can the YBM251 grade handle interrupted cuts in stainless?
A: Yes, YBM251 is a versatile grade with high substrate toughness, making it suitable for moderate interrupted cuts where finishing-only grades might chip.
Q: Is coolant necessary with these inserts?
A: High-pressure coolant is highly recommended for stainless steel to evacuate chips and prolong the life of the CVD coating by preventing work hardening.
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.