ZCC.CT CNMG190612-DM YBM251 Carbide Turning Inserts for Stainless Steel
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ZCC.CT CNMG190612-DM YBM251 Turning Inserts
Product Overview
"Which carbide insert is best for medium-duty turning of stainless steel with high stability and heat resistance?"
The CNMG190612-DM YBM251 is a premier industrial solution for CNC professionals. Featuring the YBM251 grade, this insert combines a tough carbide substrate with an advanced CVD coating, specifically engineered to tackle the work-hardening challenges of Stainless Steel (M-Class). The DM chipbreaker provides a versatile geometry that ensures smooth chip evacuation during medium cutting operations, preventing chip-tangling and tool wear.
Understanding the ISO Code
80° Rhombic
0° Clearance
Tolerance
Hole/Feature
19.05mm Size
6.35mm Thick
1.2mm Radius
Chipbreaker
Key Features
- YBM251 Grade: A special CVD coated grade optimized for medium speed and high reliability in stainless steel.
- DM Chipbreaker: Excellent chip control range, perfect for general purpose to medium-duty turning.
- Thermal Stability: High resistance to plastic deformation and thermal cracking.
- Long Tool Life: Enhanced edge strength reduces frequent tool changes in high-production environments.
Technical Specifications
| Feature | Metric (ISO) | Inch (ANSI) |
|---|---|---|
| Model | CNMG190612-DM | CNMG 643-DM |
| Inscribed Circle | 19.05 mm | 0.75" |
| Thickness | 6.35 mm | 0.25" |
| Corner Radius | 1.2 mm | 0.047" |
Recommended Cutting Parameters
| Cutting Speed (Vc) | 150 - 280 m/min |
| Feed Rate (f) | 0.2 - 0.5 mm/rev |
Compatible Holders
Compatible with standard DCLNR/L, PCLNR/L, or MCLNR/L Turning Tool Holders (Size 19/6).
Browse Compatible Tool Holders →Primary Applications
Perfectly suited for the following industries:
- Material: Stainless Steel (Austenitic, Ferritic, Martensitic).
- Condition: Continuous to light interrupted cutting.
- Machining Type: Semi-finishing to medium roughing.
Material & Grade Comparison (ZCC.CT)
| Grade | Ideal Application | Performance |
|---|---|---|
| YBM151 | Finish Stainless | High Speed / Low Vibration |
| YBM251 | General Stainless | Universal / High Stability |
Why Choose ZCC.CT Tools?
As a global leader in carbide production, ZCC.CT delivers "Industrial Grade" precision. Our YBM series inserts utilize nano-structured coatings that outperform standard alternatives in thermal dissipation and edge retention.
Customer Reviews
⭐⭐⭐⭐⭐
"Excellent for 304 SS"
Found these to be very reliable for our 304 stainless shafts. Tool life is impressive.
— John D., USA⭐⭐⭐⭐⭐
"Top Qualität"
Sehr gute Standzeit bei Edelstahl-Bearbeitung. Preis-Leistung unschlagbar.
— Markus S., Germany⭐⭐⭐⭐
"Reliable Performance"
Solid choice for medium roughing in our Italian facility.
— Luca R., Italy⭐⭐⭐⭐⭐
"コストパフォーマンス最高"
Very consistent chips with the DM geometry.
— Sato T., JapanFrequently Asked Questions
Q1: Can YBM251 be used for Carbon Steel?
A1: While designed for Stainless Steel, it can handle Carbon Steels effectively, though YBC251 is usually preferred for pure steel applications.
Q2: Is this suitable for dry machining?
A2: Stainless steel machining generates high heat; while the CVD coating helps, coolant is highly recommended for optimal tool life.
Q3: What is the benefit of the DM chipbreaker?
A3: The DM geometry is a "Dual-Medium" design that handles varying depths of cut while maintaining stable chip breaking.
Material Tip: If you experience edge chipping, try switching to a tougher grade like YBM253 or reducing the feed rate by 15%. For high-speed finishing, YBM151 remains the top choice.
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.