Korloy DCMT070202-HMP PC9030 Stainless Steel Turning Insert (10pcs)
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The Original Korloy DCMT070202-HMP PC9030 (ANSI Standard: DCMT 21.50.5) is a high-performance 55° diamond turning insert specifically engineered for Stainless Steel (M) and Heat-Resistant Alloys (S). The HMP (Semi-Finishing) chipbreaker is designed with a unique geometry that breaks chips effectively at varying depths of cut, preventing long, stringy chips common in stainless machining. The PC9030 PVD grade is Korloy's premier choice for toughness and heat resistance, making it ideal for interrupted cuts and high-temperature alloys.
Stainless Steel Specialist: The combination of a sharp cutting edge and the PC9030 PVD coating prevents "work hardening" and chemical wear, significantly extending tool life on 304 and 316 stainless steel.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | DCMT070202-HMP |
| ANSI Code | DCMT 21.50.5 |
| Grade | PC9030 (Premium PVD for Stainless) |
| Nose Radius | 0.2 mm (Fine Detail / Low Pressure) |
Core Performance Benefits:
- HMP Geometry: Provides excellent chip control during semi-finishing, reducing the risk of "bird-nesting" chips on long workpieces.
- Shock Resistant: The PC9030 grade is highly resistant to thermal and mechanical shock, perfect for small-diameter parts with interrupted surfaces.
- Low Cutting Force: The R0.2 radius is ideal for high-precision tasks and thin-walled parts where minimizing vibration is critical.
- Anti-Adhesion: Specialized coating reduces the chemical affinity between the insert and the stainless steel workpiece, preventing edge build-up.
Recommended Cutting Parameters:
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Austenitic (304/316) | 80 - 160 m/min | 0.05 - 0.15 mm/rev | 0.3 - 2.0 mm |
| Martensitic (400 Series) | 100 - 180 m/min | 0.08 - 0.18 mm/rev | 0.5 - 2.5 mm |
| Heat Resistant Alloys | 30 - 70 m/min | 0.05 - 0.12 mm/rev | 0.2 - 1.5 mm |
Compatible Tool Holders:
Fits all standard 55-degree diamond SDJC or SDUC holders for 07 size:
- External Turning: SDJCR/L 0808 / 1010 / 1212F07
- Boring Bars: S08K-SDUCR07 / S10K-SDUCR07 / S12M-SDUCR07
Stainless Steel Pro-Tip: PC9030 vs. PC5300
Selecting the best grade for your Stainless Steel project:
The first choice for general stainless steel. It is optimized for toughness and prevents edge chipping in interrupted cuts or unstable setups.
Better for heavy interruption or low-speed machining where toughness is the only priority. However, PC9030 offers better wear resistance at standard speeds.
Machinist's Insight: Stainless steel loves to generate heat. Always use a stable supply of coolant with the PC9030 grade to maximize the efficiency of the HMP chipbreaker.
Packaging: 10 pieces per box.
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.