WNMA carbide insert

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WNMA carbide insert Specification

Hardness
91-93 HRA

Tensile Strength
Up to 1500 MPa

Shape
Trigonal (Trigon) - 80

Finish
Polished/Coated

Standard
ISO WNMA

Grade
P20-P30 / K20-K30

Diameter
12.7 mm

Surface Treatment
TiN/TiCN/Al2O3 CVD Coated

Corrosion Resistant
Yes (coating dependent)

Feature
Double-sided, highly wear-resistant

Thickness
4.76 mm

Capacity
Suitable for roughing and finishing

Load Capacity
High

Fasteners Type
Insert

Material
carbide

Tolerance
0.05 mm

Application
Turning, machining of steel, cast iron

Rake Angle
Negative

Corner Angle
80

Insert Clearance (Relief) Angle
0

Insert Code
WNMA

Number of Cutting Edges
6

Compatibility
Standard ISO toolholders

Heat Resistance
Excellent

Usage
External turning

Coating Type
CVD (chemical vapor deposition)

Chipbreaker
None (Flat top)

Cutting Edge Length
12.7 mm

About WNMA carbide insert

Carbide inserts are small, replaceable, high-hardness cutting tools made of tungsten carbide and cobalt, primarily used in lathes, mills, and drills for machining hard materials like steel, cast iron, and alloys. These indexable tools increase productivity by offering high wear resistance and enabling faster cutting speeds, often with multiple edges that can be rotated when worn. [1, 2, 3, 4, 5]

Key Characteristics and Components

Material: Comprised of cemented carbide, combining high hardness (HRA 89-93) with toughness to resist cutting forces.
Shapes: Common shapes include Triangle (T), Diamond (C, D), Square (S), and Round (R), each suitable for specific operations like boring, turning, or profiling.
Designation Code (e.g., CNMG 120408):

Shape: C (Diamond 80).
Clearance Angle: N (0).
Tolerance: M (Tolerance class).
Type: G (With hole and chip breaker).
Size: 12 (Approx. 12mm edge length).
Thickness: 04 (Approx. 4.76mm).
Radius: 08 (0.8mm nose radius). [1, 6, 7, 8, 9]

Selection Factors

Material Application: Represented by letters, such as P (Steel), M (Stainless), K (Cast Iron), and S (Heat-resistant alloys).
Operation: Roughing requires stronger, thicker inserts with larger radii, while finishing requires smaller radii for better surface quality.
Tool Holder: The insert shape must match the corresponding tool holder's geometry. [6, 7, 10, 11]

Key Advantages