AH6225

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A new versatile solution for your challenges in stainless steel machining

PVD grade for stainless steel turning

Applications & Features

Internal turningExternal turning

1. Grade feature

Versatile PVD-coated grade
Ti-enriched coating

– Thick Ti-enriched PVD coating for enhanced thermal shock resistance
– Reduced crater wear

High Ti-content nano-structured multilayer coating

The outer layer consists of a high Ti-content nano-structured multilayer made possible by Tungaloy’s latest coating technology. Its high hardness and nano structure provides the grade with a good balance of wear and fracture resistance, enhancing tool life and predictability.

Dedicated carbide substrate

Thanks to high thermal conductivity of the substrate, heat generated during machining is dissipated, efficiently reducing temperature on the cutting edge. This provides edge toughness, while reducing plastic deformation of the cutting edge. Ideal for continuous cuts.

2. Application range

Grades

AH6225

  • M15 – M30
  • AH6225 showed excellent wear resistance in stainless steel machining.

Practical examples

Part: Joint part
Material: SUS304 / X5CrNi18-9
Insert: CNMG120404-SM
Grade: AH6225
Cutting conditions: Vc = 80(m/min)
f = 0.1 (mm/rev)
ap = 1.0 (mm)
Application: External turning
Coolant: Wet
Part: Machine part
Material: SUS440 (Martensite stainless steel)
Insert: VNMG160404-SF
Grade: AH6225
Cutting conditions: Vc = 100 (m/min)
f = 0.1 (mm/rev)
ap = 0.5 (mm)
Application: External turning
Coolant: Wet

Standard cutting conditions

Negative inserts
Workpiece material Grade Chipbreaker Cutting speed Depth of cut Feed
Vc (m/min) ap (mm) f (mm/rev)
Austenitic Austenitic
stainless steel
AH6225 SF 90 – 200 0.5 – 2.5 0.08 – 0.45
AH6225 SM 90 – 200 1 – 4 0.2 – 0.5
AH6225 SH 90 – 200 2 – 6 0.3 – 0.6
Ferritic / martensite stainless steel AH6225 SF 110 – 240 0.5 – 2.5 0.08 – 0.45
AH6225 SM 110 – 240 1 – 4 0.2 – 0.5
AH6225 SH 110 – 240 2 – 6 0.3 – 0.6
Precipitation hardened stainless steel AH6225 SF 60 – 110 0.5 – 2.5 0.08 – 0.45
AH6225 SM 60 – 110 1 – 4 0.2 – 0.5
AH6225 SH 60 – 110 2 – 6 0.3 – 0.6
Positive inserts
Workpiece material Grade Chipbreaker Cutting speed Depth of cut Feed
Vc (m/min) ap (mm) f (mm/rev)
Austenitic Austenitic
stainless steel
AH6225 PSS 90 – 200 0.3 – 2 0.08 – 0.3
AH6225 PS 90 – 200 0.5 – 2.5 0.08 – 0.3
AH6225 PM 90 – 200 1 – 3 0.15 – 0.3
Ferritic / martensite stainless steel AH6225 PSS 110 – 240 0.3 – 2 0.08 – 0.3
AH6225 PS 110 – 240 0.5 – 2.5 0.08 – 0.3
AH6225 PM 110 – 240 1 – 3 0.15 – 0.3
Precipitation hardened stainless steel AH6225 PSS 60 – 110 0.3 – 2 0.08 – 0.3
AH6225 PS 60 – 110 0.5 – 2.5 0.08 – 0.3
AH6225 PM 60 – 110 1 – 3 0.15 – 0.3

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