Korloy Indexable Carbide Insert SPMT11T308-PD PC3500 | SPMT 32.5-2 (Imperial Equivalent) Milling Inserts for Steel Machining - 10pcs Box
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Korloy Indexable Carbide Insert SPMT11T308-PD PC3500 | SPMT 32.5-2 (Imperial Equivalent) Milling Inserts for Steel Machining - 10pcs Box
High-Performance ISO-Standard Indexable Cutting Tools for Industrial CNC Steel Machining
1. Product Overview
"Which indexable milling or U-drill insert is best suited for high-speed, stable machining of carbon steel and alloy steel under aggressive feed rates?" CNC engineers and machinists frequently specify the Korloy SPMT11T308-PD PC3500. This industrial-grade indexable carbide insert combines an advanced CVD-coated carbide substrate with a specialized -PD chipbreaker geometry, engineered to deliver rapid chip evacuation, minimal cutting resistance, and extended tool life during high-performance face milling, shoulder milling, and indexable drilling operations.
2. Product Key Features
- PC3500 Grade Technology: Features a robust CVD multi-layer coating optimized as a thermal barrier for high-speed machining of ISO P steel materials.
- -PD Geometry Chipbreaker: Positive rake angle design with a sharp cutting edge that significantly reduces cutting forces and chatter in steel applications.
- ISO/ANSI Standard Compliance: Manufactured strictly under international indexable tooling standards to guarantee exact indexing repeatability and secure clamping.
- High Productivity Package: Supplied in industrial factory-sealed boxes of 10 pieces to minimize tool changeover downtime.
3. Technical Specifications & Model Breakdown
Review the comprehensive parameter specifications, metric-to-imperial conversions, and ISO model code breakdown below for seamless integration into your CNC machining environment.
Metric vs. Imperial Designation Comparison
| Specification Parameter | Metric Standard (ISO) | Imperial Equivalent (ANSI) |
|---|---|---|
| Primary Insert Model | SPMT11T308-PD | SPMT 32.5-2 |
| Inscribed Circle (I.C.) | 6.35 mm | 3/8 inch (0.375") |
| Insert Thickness | 3.97 mm | 0.156 inch (32.5 series) |
| Corner Radius | 0.8 mm | 1/32 inch (0.031") |
Recommended Cutting Parameters (Feed & Speed)
| Workpiece Material Group | Cutting Speed (v_c) m/min | Feed per Tooth (f_z) mm/z |
|---|---|---|
| Carbon Steel (P10 - P30) | 180 - 320 | 0.08 - 0.25 |
| Alloy Steel / Tool Steel | 140 - 260 | 0.06 - 0.20 |
| Pre-hardened Steel | 100 - 180 | 0.05 - 0.15 |
Looking for matching tool holders or indexable drills to fit these inserts?
Browse Compatible Face Milling Cutters & U-Drills4. Product Application Scenarios
The Korloy SPMT11T308-PD PC3500 insert excels across diverse industrial manufacturing environments:
- Automotive Production Lines: High-speed roughing and finishing of forged steel engine components and transmission brackets.
- General Mechanical Engineering: Face milling structural steel plates, machinery frames, and carbon steel weldments.
- Mold and Die Machining: Deep-pocket drilling and contour roughing of medium-hardness alloy steel mold bases.
5. Compatibility
Engineered to integrate seamlessly into standard industrial tooling setups:
- Tool Bodies: Fully compatible with standard 90-degree shoulder milling cutters, face mills, and indexable U-drills utilizing SPMT 11T3 pockets.
- Machine Tools: Optimized for CNC vertical machining centers (VMCs), horizontal machining centers (HMCs), and high-rigidity CNC lathes.
6. Material Comparison & Workpiece Matrix
Understanding grade characteristics ensures maximum metal removal rates and safeguards against premature edge breakdown.
| ISO Material Category | Target Materials | PC3500 Performance Suitability |
|---|---|---|
| P (Steel) | Carbon steel, alloy steel, free-cutting steel | Excellent (Primary Application - High Speed) |
| M (Stainless Steel) | Austenitic and ferritic stainless steel | Conditional / Use PC5300 for Stables |
| K (Cast Iron) | Gray cast iron, ductile iron | Good (Stable Continuous Cuts) |
7. Why Choose Us
100% Genuine Guarantee
Sourced directly from authorized manufacturers, guaranteeing verified batch authenticity and consistent industrial tool performance.
Fast Global Logistics
Maintained warehouse inventory and optimized international shipping lines ensure rapid dispatch to eliminate production line bottlenecks.
Technical Expertise
Backed by professional CNC application engineers available to provide customized cutting data recommendations and troubleshooting.
8. Frequently Asked Questions (FAQ)
Q: What makes the Korloy PC3500 grade ideal for steel machining?
A: The PC3500 grade features a heavy-duty CVD multi-layer coating that acts as a thermal barrier, resisting crater wear and permitting significantly higher cutting speeds (v_c) in carbon and alloy steels compared to standard PVD grades.
Q: How many inserts are packaged per box?
A: Each standard industrial order includes 10 factory-sealed indexable carbide inserts, individually protected against shipping shock.
Q: Can this insert be used in both milling cutters and indexable drills?
A: Yes, the SPMT11T308-PD geometry is engineered with high versatility, fitting standard 90-degree shoulder mills as well as major brand indexable U-drills.
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.