Kyocera WNMG080412GT CA525 TAC08461 Turning Insert
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- Stock: In Stock
- Model: CA525
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: TAC08461
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Product Overview
The WNMG080412GT is a premium-grade cnc turning insert from Kyocera, featuring the advanced CA525 PVD-coated carbide substrate. This WNMG negative insert with 1.2mm corner radius and high-speed finishing geometry (GT) is engineered for high-speed finishing of steel. The 12.7mm inscribed circle and 4.76mm thickness provide excellent edge stability and chip control across a wide range of cutting parameters. Ideal for modern CNC turning centers requiring consistent tool life and dimensional accuracy.
ISO Designation Breakdown
The WNMG080412GT designation follows ISO 1832:2004 standard for indexable inserts:
| Position | Code | Meaning |
|---|---|---|
| 1st Letter | W | 80° Trigon (D=80°) |
| 2nd Letter | N | 0° clearance (negative insert) |
| 3rd Letter | M | ±0.13mm (M-class tolerance) |
| 4th Letter | G | With cylindrical hole + countersink |
| Size (mm) | 08 | Inscribed circle diameter: 12.7mm |
| Thickness (mm) | 04 | Insert thickness: 4.76mm |
| Corner Radius | 12 | 1.2mm |
Engineering Dimensions & Geometry
Precise dimensional specifications for toolholder selection and programming:
| Dimension | Value | Tolerance |
|---|---|---|
| Inscribed Circle (IC) | 12.7mm | ±0.13mm (M-class) |
| Insert Thickness (S) | 4.76mm | ±0.13mm |
| Corner Radius (rε) | 1.2mm | ±0.10mm |
| Hole Diameter | 4.4mm (for 06xx) / 5.5mm (for 08xx) | H7 |
| Countersink Diameter | 8.5mm (for 06xx) / 10.5mm (for 08xx) | +0.2/-0.0mm |
| Insert Length (L) | Approximately 1.5 × IC | ±0.20mm |
Grade Details – Key Grade Characteristics
The CA525 grade is a PVD-coated ultra-fine grain cemented carbide optimized for steel and stainless steel machining:
| Property | CA525 Specification |
|---|---|
| Substrate | Ultra-fine grain cemented carbide |
| Coating | PVD TiAlN multi-layer |
| Hardness (HV) | 1,850 ± 50 |
| Transverse Rupture Strength | ≥ 3,200 MPa |
| Coefficient of Thermal Expansion | 5.2 × 10⁻⁶ /°C |
| Thermal Conductivity | 45 W/m·K |
| Primary Application | Steel, stainless steel, cast iron |
Grade Comparison Matrix
Compare CA525 with other grades in the Kyocera portfolio to select the optimal solution for your application:
| Grade | Coating | Best For | Speed Range |
|---|---|---|---|
| CA525 | PVD TiAlN | Steel, SS, Cast Iron | Medium-High |
| CA530 | PVD TiAlN | Hardened Steel | High |
| CA535 | CVD Al₂O₃/TiCN | Cast Iron, Roughing | Low-Medium |
| CA5515 | PVD TiSiN | Titanium, Inconel | Medium |
Chipbreaker Profile
GT Chipbreaker – High-speed finishing geometry with optimized rake face and minimal cutting resistance. Ideal for high-speed CNC turning with excellent chip evacuation.
| Parameter | Range |
|---|---|
| Recommended Feed (fn) | 0.08 – 0.30 mm/rev |
| Depth of Cut (ap) | 0.2 – 2.0 mm |
Recommended Applications & Workpiece Materials
The WNMG080412GT grade CA525 is suitable for the following materials:
- Carbon steel, alloy steel, free-machining steel, stainless steel, high-speed finishing applications
- Hardness range: ≤ 350 HB (optimal), up to 45 HRC with reduced parameters
- Surface condition: Pre-machined, as-cast, or as-forged (roughing geometries)
Application Map by Operation
Recommended machining operations for the GT geometry:
- High-speed finishing, thin-walled parts, precision contouring, CNC automated turning
Recommended Cutting Conditions
Starting parameters for GT geometry with CA525 grade. Adjust based on machine rigidity and workpiece condition:
| Workpiece Material | Cutting Speed Vc (m/min) | Feed fn (mm/rev) | Depth of Cut ap (mm) |
|---|---|---|---|
| Carbon Steel (≤ 300 HB) | 180 – 280 | 0.08 – 0.30 mm/rev | 0.2 – 2.0 mm |
| Alloy Steel (300-400 HB) | 120 – 200 | 0.08 – 0.30 mm/rev | 0.2 – 2.0 mm |
| Stainless Steel (AISI 304/316) | 100 – 160 | 0.08 – 0.30 mm/rev | 0.2 – 2.0 mm |
| Cast Iron (GG25/GGG40) | 150 – 220 | 0.08 – 0.30 mm/rev | 0.2 – 2.0 mm |
| Tool Steel (40-50 HRC) | 60 – 100 | 0.05 – 0.15 | 0.2 – 0.8 |
Operating Guidelines
- Toolholder Selection: Use negative rake toolholders (e.g., WNMG holders) with 0° or 5° inclination for optimal performance.
- Coolant Recommendation: High-pressure coolant (70+ bar) recommended for chip evacuation in deep cavities and stainless steel.
- Edge Preparation: CA525 features honed T-land edge preparation (0.02-0.05mm) for improved edge stability.
- Run-in Procedure: Reduce cutting speed by 20% for the first 5 minutes to stabilize the coating and substrate interface.
- Tool Life Monitoring: Monitor flank wear (VB). Recommended tool change at VB = 0.3mm for roughing, VB = 0.15mm for finishing.
- Chip Control: Ensure chipbreaker geometry matches feed rate. Adjust coolant nozzle to direct flow at the cutting zone.
Toolholder Compatibility
Compatible toolholder series for WNMG inserts:
| Holder Series | Insert Size | Approach Angle | Application |
|---|---|---|---|
| MWLNR / MWLNL | WNMG 08xx | 95° | External turning, facing |
| PWLNR / PWLNL | WNMG 06xx | 95° | Small diameter external turning |
| MWENN / MWENL | WNMG 08xx | 60° | Profiling, copy turning |
| SWLCR / SWLCL | WNMG 06xx | 95° | Screw clamp holders |
Packaging & Ordering Information
| Parameter | Details |
|---|---|
| Standard Packaging | 10 inserts per plastic box, anti-corrosion VCI paper |
| Bulk Packaging | 100 inserts per master carton, individual insert separators |
| Minimum Order Quantity | 1 box (10 inserts) |
| MPN (Manufacturer Part Number) | TAC08461 |
| Kyotow SKU | KYO-WNMG080412GT-CA525-TAC08461 |
| Warranty | Full manufacturer warranty against material and coating defects |
Catalog Meta Data
| Attribute | Value |
|---|---|
| Product Series | Kyocera WNMG Negative Insert Series |
| Grade Family | CA500 Series (PVD Coated Carbide) |
| Insert Standard | ISO 1832:2004 / ANSI B94.4 |
| Country of Manufacture | Japan |
| RoHS Compliance | RoHS 3 (2015/863/EU) Compliant |
| REACH Status | Compliant – No SVHCs above 0.1% w/w |
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