ZCC.CT CCMT09T304-HM YBM251 Carbide Turning Inserts for Stainless Steel
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ZCC.CT CCMT09T304-HM YBM251: Premium Stainless Steel Machining
Product Overview
The ZCC.CT CCMT09T304-HM YBM251 is a high-performance carbide insert optimized for the challenging M-group (Stainless Steel). The YBM251 grade features a specialized CVD coating and a fine-grained substrate that offers exceptional resistance to thermal shock and notch wear. With a 0.4mm (0.016") nose radius and the HM chipbreaker, this insert excels at precision medium machining, ensuring stable chip control and preventing built-up edge (BUE) even in high-temperature cutting zones.
Key Features
- Optimized YBM251 Grade: Specifically designed for M15-M35 stainless steel range, balancing toughness and hardness.
- HM (Medium) Chipbreaker: Features a wide chip pocket for efficient chip evacuation during semi-finishing to medium operations.
- CVD Multi-Layer Coating: Enhances heat resistance and reduces friction between the chip and the rake face.
- Precision 0.4mm Radius: Ideal for reducing cutting pressure and improving surface finish on delicate components.
Technical Specifications
ISO Model Breakdown (CCMT 09T304-HM)
80° Diamond
7° Relief
Tolerance
Hole/Chipbreak
9.7mm Edge
3.97mm Thick
0.4mm Radius
Medium Cut
| Metric Model | ANSI/Imperial Equivalent |
|---|---|
| CCMT09T304-HM | CCMT 32.51-HM |
Cutting Speed & Feed Data
| Material (M Group) | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Stainless Steel (304/316) | 150 - 260 m/min | 0.10 - 0.25 mm/rev |
| Duplex Stainless Steel | 100 - 180 m/min | 0.08 - 0.20 mm/rev |
Tool Holder Compatibility
Compatible with standard S-Type Tool Holders:
Designed for secure screw-down clamping in:
Applications
The CCMT 09T304-HM YBM251 is the industrial choice for Semi-Finishing to Medium Machining in:
ZCC.CT Grade Guide (Stainless Steel)
| Grade | Application | Cutting Condition |
|---|---|---|
| YBM151 | Finishing / High Speed | Stable Continuous Cutting |
| YBM251 | General Purpose | Balanced Toughness/Wear |
Customer Reviews
"Top Performance on 316L"
"Used these for medical grade 316L parts in Germany. The tool life is 20% longer than our previous Tier 1 supplier."
— Hans K., Germany
"Great Chip Breaking"
"The HM chipbreaker solved our stringy chip problem on the CNC lathe. Excellent for automated production."
— John D., USA
"Versatile and Stable"
"Consistency is key in our Italian job shop. These inserts provide predictable results part after part."
— Luca R., Italy
Frequently Asked Questions
Q: Is YBM251 suitable for interrupted cutting?
A: Yes, YBM251 is the general-purpose grade for stainless steel with high edge toughness, making it suitable for light interrupted cuts.
Q: What is the benefit of the 0.4mm (04) nose radius?
A: A 0.4mm radius reduces cutting forces and is perfect for finishing operations where dimensional accuracy and low vibration are critical.
Q: Does it work on Super Alloys?
A: While primarily for stainless steel, it can perform well on some heat-resistant alloys. For Inconel, we recommend the YBS series.
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.