ZCC.CT TCMT220408-HR YBM251 Carbide Turning Inserts for Stainless Steel Roughing
Price shown is a starting point. Contact us for a precise quote based on your requirements.
ZCC.CT TCMT220408-HR YBM251
Heavy-Duty Roughing Inserts for ISO M Stainless Steel
Product Overview
"Which insert is best for heavy roughing of stainless steel with interrupted cuts while maintaining stable chip breaking?"
The ZCC.CT TCMT220408-HR YBM251 is a powerhouse designed for the most demanding ISO M (Stainless Steel) applications. Combining the legendary YBM251 CVD grade with the aggressive -HR (Heavy Roughing) chipbreaker, this insert excels in removing large volumes of material. The unique geometry is engineered to prevent notch wear and handle the high thermal loads typical of austenitic and duplex stainless steels.
Key Performance Features
-HR Roughing Geometry
Reinforced cutting edge designed for large depths of cut (Ap) and high feed rates in tough materials.
YBM251 CVD Grade
A specialized coating with superior impact toughness and resistance to thermal cracking.
Optimized Chip Control
The HR breaker forces short, manageable chips even in "stringy" stainless steel alloys.
Technical Specifications
ISO Designation Decoding
Triangular
7° Relief
Tolerance
W/Hole
Edge (mm)
Thick (mm)
Rad (mm)
Roughing
| Standard | Model Designation | Inscribed Circle / Rad |
|---|---|---|
| Metric (ISO) | TCMT220408-HR | 12.7mm / 0.8mm |
| Imperial (ANSI) | TCMT432-HR | 1/2" / 1/32" |
Recommended Cutting Parameters
| Workpiece Material | Speed (Vc m/min) | Feed (f mm/rev) |
|---|---|---|
| Austenitic Stainless (304/316) | 120 - 220 | 0.25 - 0.55 |
| Duplex Stainless Steel | 80 - 160 | 0.20 - 0.45 |
Recommended Tool Holder:
Industrial Applications
- Heavy Roughing: Large material removal on stainless steel castings and forgings.
- Interrupted Cuts: Stable performance on parts with keyways or cross-holes.
- High Temperature: Maintains edge hardness in heat-resistant alloys.
Machine Compatibility
Fits all standard ISO turning tool holders (Internal or External) designed for TCMT 22 size inserts. Optimized for medium to large-scale CNC Lathes and Heavy-Duty machining centers.
ZCC.CT Grade Comparison (Stainless Steel)
| Grade | Type | Best For |
|---|---|---|
| YBM151 | CVD | High Speed / Finishing |
| YBM251 (Current) | CVD | General Purpose / Roughing |
| YBM351 | CVD | Interrupted / Heavy Roughing |
Voices From the Shop Floor
"Aggressive chip breaker"
Finally found an insert that breaks chips in 304 without killing the edge too fast. -HR is a beast.
— Robert D., USA 🇺🇸"Top für Edelstahl"
The YBM251 grade handles the heat very well. Using it for large valve bodies.
— Dieter S., Germany 🇩🇪"Affidabile"
Fast delivery and original ZCC.CT quality. Great performance on duplex.
— Luca P., Italy 🇮🇹Technical FAQ
Q: When should I choose -HR over -HM chipbreaker?
A: Choose -HR (Heavy Roughing) when your depth of cut is large or you are dealing with very inconsistent casting skins. For lighter semi-finishing, -HM is better.
Q: Can I use YBM251 for dry machining?
A: While the CVD coating handles heat well, high-volume coolant is strongly recommended for stainless steel to help with chip evacuation and reduce built-up edge.
Q: Does this work on Inconel or Titanium?
A: It can handle some high-temp alloys, but YBM251 is primarily optimized for ISO M (Stainless). For S-class materials, please consult our specific grade guide.
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.