WNMG433PG CA025P Grade CVD Carbide, Indexable Turning Insert For Boring, External Turning, Facing, Internal Facing
- Stock: In Stock
- Model: WNMG
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: TMH00070
WNMG433PG CA025P Grade CVD Carbide, Indexable Turning Insert For Boring, External Turning, Facing, Internal Facing
Product Overview
The WNMG080412PG is a premium-grade trigon insert from Kyocera Precision Tools, manufactured in Japan to exacting ISO standards. Featuring the advanced CA025P CVD multi-layer coating and the PG chipbreaker geometry, this insert is engineered for boring, external turning, facing, internal facing operations on steel workpieces. With 6 usable cutting edges, it delivers exceptional cost-per-edge efficiency while maintaining consistent dimensional accuracy and surface finish across high-volume production runs.
ISO Designation Breakdown
The complete ISO designation WNMG080412PG encodes critical dimensional and geometric data:
| ISO Designation Element | Value | Meaning |
|---|---|---|
| Shape | W | 80 Degree Trigon |
| Clearance | N | N (0° clearance) |
| Tolerance Class | M | ±0.005" inscribed circle, ±0.001" thickness |
| Hole / Fixing | G | With cylindrical hole and countersink |
| Size | 433 | 1/2" inscribed circle, 3/16" thickness |
| Corner Radius | 3/64" | Nose radius for edge strength and finish |
| Chipbreaker | PG | The PG chipbreaker is engineered for heavy-duty roughing applications with its robust edge preparation and wide chip groove |
Engineering Dimensions & Geometry
| Dimensions & Geometry | |
|---|---|
| Inscribed Circle (IC) | 1/2" |
| Insert Thickness (S) | 3/16" |
| Nose Radius (rε) | 3/64" |
| Included Angle | 80° |
| Clearance Angle | 0° (N-type, neutral hand) |
| Cutting Edges | 6 |
| Hand | Neutral |
Grade Details – Key Grade Characteristics
The CA025P grade represents Kyocera's advanced CVD-coated carbide technology, specifically formulated for steel machining:
- Substrate: Ultra-fine grain tungsten carbide with high cobalt content for superior toughness and crack resistance.
- Coating Architecture: Multi-layer CVD coating featuring a thick alumina (Al₂O₃) top layer—twice the thickness of conventional coatings—providing exceptional thermal barrier properties and oxidation resistance at elevated cutting temperatures.
- Post-Coating Treatment: Specialized surface smoothing process eliminates coating droplets and micro-defects, significantly reducing built-up edge (BUE) and improving chip flow.
- Thermal Performance: The thickened alumina layer maintains coating integrity at cutting edge temperatures exceeding 800°C, enabling higher cutting speeds without premature flank wear.
- Application Range: Ideal for general turning through interrupted cutting of carbon steel, alloy steel, and bearing steel (ISO P10–P30 range).
Grade Comparison Matrix
Select the optimal grade for your specific machining environment:
| Grade | Coating | Primary Use | Best For |
|---|---|---|---|
| CA025P | CVD Multi-Layer | General to Interrupted Steel | High-speed finishing, reliable tool life |
| CA530 | CVD Thick Coat | Heavy-Duty Roughing | Maximum edge strength, deep cuts |
| PR1535 | PVD | Stainless Steel | Corrosion-resistant materials |
| PV720 | PVD | Hardened Steel >45 HRC | Hard turning, dimensional stability |
Chipbreaker Profile
The PG chipbreaker is engineered for heavy-duty roughing applications with its robust edge preparation and wide chip groove. The aggressive geometry handles high feed rates and deep depths of cut with confidence, providing reliable chip control even under demanding interrupted cutting conditions.
Key Benefits:
- Controlled chip curl radius prevents bird-nesting and protects finished surfaces
- Optimized rake angle reduces cutting force by up to 15% compared to standard geometries
- Reinforced cutting edge land improves micro-chipping resistance in scale-covered or forged surfaces
- Compatible with both dry machining and emulsion coolant systems
Recommended Applications & Workpiece Materials
The WNMG080412PG with CA025P grade is specifically recommended for the following material groups:
- Carbon Steels: C35, C45, C60 (ISO 1.0503, 1.0501, 1.0601) – Excellent balance of wear resistance and edge toughness
- Alloy Steels: 4140, 4340, 42CrMo4 (ISO 1.7225) – Stable performance in normalized and quenched conditions
- Bearing Steels: 100Cr6, 52100 – Reliable finishing with minimal white-layer formation
- Tool Steels: O1, D2 (annealed condition) – Cost-effective alternative to grinding for rough shaping
- Cast Steels: GS-45, GS-60 – Effective scale cutting with reduced edge chipping
Application Map by Operation
| Operation | Suitability | Notes |
|---|---|---|
| External Turning | ★★★★★ Excellent | Primary application; use recommended parameters |
| Facing | ★★★★★ Excellent | Maintain constant surface speed at center approach |
| Boring | ★★★★☆ Very Good | Ensure holder overhang <4× diameter for stability |
| Chamfering | ★★★★☆ Very Good | Reduce feed by 30% for crisp edge definition |
| Copying / Contouring | ★★★★☆ Very Good | Use constant surface speed (CSS) mode on CNC lathes |
| Undercutting | ★★★☆☆ Good | Verify holder clearance angle to avoid rubbing |
| Internal Facing | ★★★★☆ Very Good | Use rigid boring bar with minimum overhang |
Recommended Cutting Conditions
Starting parameters for continuous turning of carbon steel (C45 / 1.0501) with emulsion coolant:
| Parameter | Range | Recommended | Unit |
|---|---|---|---|
| Cutting Speed (Vc) | 120 – 220 | 170 | m/min |
| Feed Rate (f) | 0.25 – 0.60 | 0.42 | mm/rev |
| Depth of Cut (ap) | 2.0 – 8.0 | 5.0 | mm |
Note: Aggressive parameters for heavy roughing and high-material-removal applications. Adjust values based on machine rigidity, workpiece condition, and coolant delivery. Reduce speed by 20% for interrupted cuts.
Operating Guidelines
- Insert Seating: Clean the toolholder pocket thoroughly before insert installation. Even microscopic debris can cause uneven load distribution and premature fracture.
- Clamping Torque: Tighten clamping elements to the specified torque. Over-tightening deforms the insert seat; under-tightening allows micro-movement and edge chipping.
- Coolant Delivery: Direct coolant to the cutting zone at 8–12 bar pressure for optimal chip evacuation and thermal management. For CA025P, high-pressure coolant extends tool life by up to 25%.
- Edge Inspection: Index the insert when flank wear (VB) reaches 0.3 mm or when surface finish degrades beyond specification. Do not wait for catastrophic failure.
- Storage: Store inserts in original packaging at 15–25°C with humidity below 60%. Avoid contact with corrosive chemicals or excessive vibration.
- Safety: Always wear cut-resistant gloves when handling indexable inserts. Used edges are razor-sharp and can cause serious lacerations.
Toolholder Compatibility
The WNMG080412PG trigon insert is designed for use with the following ISO-standard toolholder families:
- MWLNR/L, MWLNN, PWLNR/L – Primary external turning and facing holders
- Screw-clamp holders – Recommended for secure insert retention and quick indexing
- Lever-lock holders – Alternative for high-pressure coolant applications
Ensure holder seat angle matches the insert clearance (N (0° clearance)) and that the pocket is free of debris before seating. Use a torque wrench to tighten clamping screws to manufacturer specifications (typically 2.5–3.5 N·m).
Packaging & Ordering Information
| Packaging Type | Individual plastic insert box (10 inserts per pack) |
| Minimum Order Quantity | 10 inserts (1 pack) |
| MPN / Catalog No. | TMH00070 |
| Unit Price | $5.61 |
| Stock Status | In Stock – Ready for dispatch |
Catalog Meta Data
| Product Category | Indexable Turning Inserts – Turning |
| Catalog Series | ISO Standard – WNMG Series |
| Grade Family | CA-Series CVD Coated Carbide |
| Revision Date | 2026-Q2 |
| Data Sheet | Available upon request – includes full cutting parameter tables and application charts |
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