CCMT09T308-HM YBM251 Carbide Turning Insert | ZCC.CT | CVD Coated | 10pcs
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ZCC.CT CCMT09T308-HM YBM251: Professional Stainless Steel Turning Solutions
Product Overview
"Which insert grade offers the highest reliability and tool life when performing medium-duty turning on gummy stainless steel materials like 304 or 316?"
The ZCC.CT CCMT09T308-HM YBM251 is a high-performance carbide turning insert specifically engineered for the M-group (Stainless Steel). The YBM251 grade features an advanced CVD coating with a specialized substrate that provides a perfect balance of toughness and wear resistance, effectively preventing built-up edge (BUE). The HM chipbreaker is designed for medium-duty machining, featuring a reinforced cutting edge and an optimized rake angle that ensures stable chip breaking across a wide range of cutting conditions.
Key Features
- Optimized YBM251 Grade: Specifically developed for stainless steel (M15–M35), offering superior resistance to notch wear and plastic deformation.
- HM (Medium) Chipbreaker: Versatile geometry that provides excellent chip control for both internal boring and external turning.
- CVD Multi-Layer Coating: Enhances thermal stability and reduces friction, extending tool life in high-temperature cutting zones.
- Durable 0.8mm Radius: Provides a robust cutting edge suitable for medium feed rates and increased depth of cut (Ap).
Technical Specifications
ISO Model Decoding (CCMT 09T308-HM)
80° Diamond
7° Relief
Tolerance
Hole/Chipbreak
9.7mm Edge
3.97mm Thick
0.8mm Radius
Medium Cut
| Metric Model | ANSI Equivalent |
|---|---|
| CCMT09T308-HM | CCMT 32.52-HM |
Cutting Parameters Recommendation
| Workpiece Material | Cutting Speed (Vc) | Feed rate (fn) |
|---|---|---|
| Austenitic Stainless (304/316) | 140 - 240 m/min | 0.15 - 0.35 mm/rev |
| Duplex Stainless Steel | 100 - 180 m/min | 0.12 - 0.30 mm/rev |
Compatibility & Tool Holders
Designed for Versatile Turning Operations:
Fits all standard S-Type screw-clamping tool holders.
Applications
The CCMT 09T308-HM YBM251 is the industrial choice for Medium Machining in:
ZCC.CT Grade Guide (Stainless Steel)
| Grade | Condition | Main Advantage |
|---|---|---|
| YBM151 | High Speed / Stable | Max Wear Resistance |
| YBM251 | General Purpose | Balanced Toughness & Life |
Customer Reviews
"Top Tier for 316 Stainless"
"Consistency is key for us in the USA. These YBM251 inserts outlasted our previous brand by 20% on 316 stainless valve bodies."
— John D., USA
"Great Chip Breaking"
"The HM chipbreaker solved our 'birds-nesting' issues on the CNC lathe. Chips are small and manageable. Very satisfied."
— Hans W., Germany
"Reliable Tooling"
"Used for boring operations in Italy. Very stable edge and good surface finish. Will buy again."
— Pietro R., Italy
"Cost Effective"
"Perfect for our high-volume production in Japan. High reliability and very competitive price for this quality level."
— Yuki T., Japan
Frequently Asked Questions
Q: Is YBM251 better than YBM151 for interrupted cuts?
A: Yes, YBM251 has higher toughness and impact resistance, making it more suitable for interrupted cutting or less stable machining conditions.
Q: What is the main application of the HM chipbreaker?
A: It is a general-purpose medium-duty chipbreaker designed for a wide range of depths of cut and feed rates on steel and stainless steel.
Q: Can I use this for internal boring?
A: Absolutely. The CCMT 09T3 geometry is excellent for boring operations, provided you have a compatible boring bar (e.g., S16Q-SCLCR09).
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.