DNMG433CQ CA025P Grade CVD Carbide, Indexable Turning Insert For Boring, Copying, External Turning

Product Overview

This insert is part of Kyocera's ISO ISOI series, style DNMG, size 433, and is manufactured to exacting tolerances for professional CNC turning applications.

ISO Designation Breakdown

Understanding the ISO code DNMG150412CQ is essential for correct tool selection. Each segment of this designation encodes specific geometric and application parameters:

Engineering Dimensions & Geometry

The DNMG150412CQ features precision-ground geometry optimized for boring, copying, external turning. Key dimensional specifications include:

• Shape: 55 Degree Diamond with 55° included angle
• Inscribed Circle (IC): 1/2" — determines holder pocket size and tool reach
• Thickness (S): 3/16" — provides insert rigidity and heat capacity
• Nose Radius (r): 3/64" — influences surface finish and edge strength
• Hand: Neutral — compatible with corresponding toolholder orientation
• Cutting Edges: Multiple usable edges per insert for cost efficiency

The geometric tolerances meet ISO 1832 Class H standards, ensuring interchangeability across qualified toolholders and consistent cutting edge positioning.

Grade Details — Key Grade Characteristics

The CA025P grade is a CVD-coated carbide grade specifically developed for steel machining applications. It features a thickened alumina layer with twice the thermal resistance of conventional coatings, combined with a specialized post-coating treatment that prevents material adhesion and built-up edge formation.

Key performance characteristics of grade CA025P:

• Substrate: Fine-grained carbide with high cobalt content for toughness
• Coating Architecture: Multi-layer CVD with TiN/TiCN/Al₂O₃ layers
• Hardness: Optimized balance between hardness and fracture resistance
• Thermal Resistance: Superior oxidation resistance up to 900°C cutting temperatures
• Application Range: General to interrupted machining of carbon steel, alloy steel, and cast steel
• Post-Coating Treatment: Specialized surface finish to reduce built-up edge and adhesion

Grade Comparison Matrix

Note: Grade CA025P is positioned as a versatile, high-reliability grade for general steel machining with excellent interruption tolerance due to its thickened alumina coating and specialized post-treatment.

Chipbreaker Profile

The CQ chipbreaker is an up-facing geometry optimized for facing and internal turning operations. Its asymmetric groove profile directs chips upward and away from the workpiece surface, preventing surface damage and ensuring clean machining.

Technical characteristics of the CQ chipbreaker:

• Chipbreaker Code: CQ
• Intended Application: Boring, Copying, External Turning
• Chip Control Range: Optimized for standard feed rates in steel
• Surface Finish Capability: Good to excellent depending on feed and speed selection
• Edge Strength: Balanced for reliability in continuous and light interrupted cuts

Recommended Applications & Workpiece Materials

The DNMG150412CQ with grade CA025P is specifically recommended for the following applications and materials:

• Primary Operations: Boring, Copying, External Turning
• Workpiece Materials: Carbon steel (C45, C50), alloy steel (4140, 4340), tool steel, cast steel, and general structural steels
• Material Hardness Range: Up to 350 HB (ideal range 150–280 HB)
• Operation Type: Continuous cutting, light interrupted cutting, and high-speed finishing
• Industry Sectors: Automotive, aerospace, general engineering, energy, and metal fabrication

Application Map by Operation

Recommended Cutting Conditions

Machining parameters for DNMG150412CQ:

• Cutting Speed (Vc): 160–260 m/min for carbon and alloy steels
• Feed Rate (f): 0.10–0.45 mm/rev — adjust based on required surface finish
• Depth of Cut (ap): 0.5–3.5 mm standard; up to 6.0 mm for heavy-duty holders
• Coolant: Emulsion or synthetic coolant at 6–8% concentration; minimum 3 bar pressure for chip evacuation

Operating Guidelines

Best practices for DNMG150412CQ operation:

• Mount insert with correct orientation using appropriate clamping torque
• Minimize tool overhang to enhance dynamic stability
• Select feed rate that produces continuous chip breaking without excessive force
• Inspect cutting edge before each shift for micro-chipping or coating wear
• Use appropriate toolholder for neutral hand of cut
• Apply consistent coolant delivery to maximize coating life

Toolholder Compatibility

Toolholder requirements for DNMG150412CQ:

• Pocket style: DNMG with 55° included angle
• Insert size: 433 (1/2" inscribed circle)
• Hand: Neutral
• Thickness compatibility: 3/16"
• Clamping type: Lever lock or screw clamp depending on holder design

Always use genuine Kyocera toolholders or precision-manufactured equivalents to ensure insert seating accuracy and cutting performance.

Packaging & Ordering Information

The DNMG150412CQ is supplied in Kyocera's original industrial packaging, with each insert protected in a precision-formed plastic tray. Standard order quantity is 10 pieces per pack. OEM and bulk packaging options are available for institutional buyers. Every shipment includes material and dimensional conformance documentation.

Minimum Order Quantity: 1 pack (10 inserts)
MPN: TMH00170
ISO Designation: DNMG150412CQ
ANSI Code: DNMG433CQCA025P

Catalog Meta Data

Technical Index: Series: ISOI | Style: DNMG | Size Code: 433 | Grade Code: CA025P | Coating Type: CVD | Chipbreaker Code: CQ

Reference Numbers: ISO Designation DNMG150412CQ | ANSI Code DNMG433CQCA025P | MPN TMH00170

Supply Status: Active catalog item with consistent manufacturing availability.