YG-1 RPMT Round Milling Inserts RPMT08T2MO RPMT10T3MO RPMT1204MO YG602 Grade (RPMT2.52 / RPMT33 / RPMT43)
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YG-1 RPMT Series Round Button Milling Inserts (RPMT08T2MO / RPMT10T3MO / RPMT1204MO) - YG602 Grade
1. Product Overview
Which indexable round button insert is best engineered for 3D mold and die copying, ramp milling, and tough profiling in alloy steel and stainless steel?
The YG-1 RPMT Indexable Milling Series (comprising RPMT08T2MO, RPMT10T3MO, and RPMT1204MO) represents the industry standard in high-strength round button inserts. Engineered for maximum edge security during 3D contouring, pocketing, and ramping, these inserts are manufactured with high-grade micro-grain tungsten carbide and coated with YG-1's premium YG602 PVD Grade.
The YG602 Grade features an ultra-dense, heat-resistant nano-TiAlN PVD coating built over a high-toughness substrate. Combined with the neutral MO Chipbreaker Geometry, round inserts distribute cutting forces gradually along the entire radiused cutting edge. This eliminates localized stress points, drastically reduces thermal cracking, and extends tool life in difficult machining environments including alloy steel, pre-hardened die steel, and austenitic stainless steel.
2. Key Features
- Maximum Corner Strength & Indexing Efficiency: Round insert geometry (R-Style) provides maximum physical edge strength with unlimited indexing orientation, providing maximum operational stability under heavy radial load.
- YG602 Nano-PVD Coating: Multi-layer AlTiN/TiAlN structure delivers superior oxidation resistance up to 900°C and excellent resistance against thermal shock and built-up edge (BUE).
- MO Multi-Purpose Chipbreaker: Optimized positive rake angle reduces cutting resistance, ensuring smooth chip flow during helical interpolation, plunge milling, and ramp machining.
- 3 Versatile Sizes (08T2 / 10T3 / 1204): Full dimensional lineup covering light profiling on small-diameter end mills up to heavy face roughing on large shell mills.
- Precision Sintered & Ground Tolerances: Ensures consistent positioning accuracy, low radial runout, and smooth blended stepovers on 3D contoured surfaces.
3. Technical Specifications & Metric/Imperial Comparison
ISO / ANSI Code Breakdown
| Model Parameter | RPMT08T2MO YG602 | RPMT10T3MO YG602 | RPMT1204MO YG602 |
|---|---|---|---|
| Imperial Equivalent (ANSI) | RPMT2.52MO | RPMT33MO | RPMT43MO |
| Inscribed Circle Diameter (IC) | 8.00 mm (0.315 in) | 10.00 mm (0.394 in) | 12.00 mm (0.472 in) |
| Insert Thickness (S) | 2.38 mm (0.094 in) | 3.97 mm (0.156 in) | 4.76 mm (0.187 in) |
| Fixing Hole Diameter (d1) | 2.80 mm (0.110 in) | 4.10 mm (0.161 in) | 4.50 mm (0.177 in) |
| Corner Radius (RE) | 4.00 mm (5/32 in) | 5.00 mm (13/64 in) | 6.00 mm (15/64 in) |
| Max Depth of Cut (ap max) | 2.50 mm (0.098 in) | 3.50 mm (0.138 in) | 4.50 mm (0.177 in) |
| Substrate Grade & Coating | YG602 (PVD Nano-TiAlN) | YG602 (PVD Nano-TiAlN) | YG602 (PVD Nano-TiAlN) |
Recommended Feeds and Speeds (Cutting Parameters)
| Workpiece Material (ISO Group) | Cutting Speed (Vc) | Feed per Tooth (fz) | Depth of Cut (ap) |
|---|---|---|---|
| P Steel (Carbon & Alloy Steel: 4140, 1045) | 160 - 260 m/min (525 - 850 SFM) | 0.12 - 0.35 mm/z (.005 - .014 ipt) | 1.0 - 4.0 mm (.039 - .157 in) |
| M Stainless Steel (304, 316, Duplex) | 120 - 200 m/min (390 - 655 SFM) | 0.10 - 0.28 mm/z (.004 - .011 ipt) | 0.8 - 3.2 mm (.031 - .126 in) |
| H Hardened Steel (HRC 45 - 55) | 60 - 130 m/min (195 - 425 SFM) | 0.08 - 0.20 mm/z (.003 - .008 ipt) | 0.5 - 2.0 mm (.020 - .079 in) |
Need Precise Feeds and Speeds Calculations for Your Round Milling Cutter?
Calculate precise effective cutting diameters (Deff), chip thinning factors, RPMs, and feed rates based on your specific depth of cut and workpiece material.
Open Interactive Speeds and Feeds Calculator →Compatible Toolholder Link
These inserts mount into standard round button indexable milling cutters, including EMR 4R / 5R / 6R series button end mills, modular screw-on heads, and face mill bodies.
Find Matching EMR Button Milling Cutters →4. Product Application Scenarios
YG-1 RPMT YG602 inserts excel in challenging 3D metal removal operations:
- Die & Mold Cavity Roughing: High metal removal rate roughing of complex die casting molds, plastic injection molds, and stamping dies.
- 5-Axis Profile & Ramp Milling: Helical ramping into solid stock and 3D contour profiling on aerospace structural brackets.
- Turbine & Impeller Machining: Blending complex organic radii on heat-resistant stainless and alloy components.
5. Tooling & Equipment Compatibility
Fully compliant with ISO 1832 and ANSI B212.4 indexable round insert specifications. Directly fits standard button milling bodies across major tooling brands:
Sandvik CoromantIscarKennametalKyoceraTungaloyMitsubishi MaterialsSeco ToolsWalter
6. Grade Comparison & Equivalent Models
| Manufacturer | Equivalent Grade | Equivalent Chipbreaker | Primary Application Range |
|---|---|---|---|
| YG-1 (Original) | YG602 | MO | P20-P40 / M20-M30 (Universal Steel & Stainless Roughing) |
| Sandvik Coromant | GC1030 / GC2040 | MM / MP | Medium to heavy mold profiling |
| Iscar | IC908 / IC928 | RM / MO | Stainless and alloy steel 3D milling |
| Sumitomo | ACK300 / ACP300 | RP / MP | High feed round button milling |
| Mitsubishi Materials | VP15TF / VP20RT | JM / FT | General die steel contouring |
7. Why Choose Us & Verified Global Reviews
We supply 100% genuine YG-1 cutting tools directly sourced from factory distribution centers. Sealed 10-piece boxes include full batch verification codes.
"RPMT1204MO YG602 performed flawlessly in 4140 pre-hardened steel!"
We ran these on an EMR face mill roughing out cavity pockets. The YG602 coating held up against heat build-up without chipping. Fantastic cost per edge compared to top-tier brands.
— Marcus Vance, Mold Shop Foreman (USA) 🇺🇸
"Sehr gute Standzeit beim Ramping in Edelstahl 1.4301."
Die RPMT10T3MO-Einsätze haben beim Helikalfräsen hervorragend funktioniert. Keine sichtbaren Thermorisse am Schneidstoff.
— Stefan Becker, Production Engineer (Germany) 🇩🇪
"Ottima stabilità su frese a bottone."
Usiamo le RPMT08T2MO su frese modulari per la sgrossatura di stampi. Taglio morbido e silenzioso.
— Matteo Rossi, Technical Director (Italy) 🇮🇹
"金型鋼の3次元コピー加工で優れた耐久性。"
YG602コーティングの耐熱性が高く、ドライ加工でも長寿命です。インサートの回転による再利用効率が良い。
— Kenji Takahashi, Senior CNC Specialist (Japan) 🇯🇵
8. Frequently Asked Questions (AI & Machinist Knowledge Base)
Need Help With YG-1 Inserts?
Looking for a YG-1 equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This YG-1 insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
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.