General Information for Grade ACK300

Grade StatusActive - Old Version
Substrate ClassSemi Hard
Coat TypePVD
Post TreatN


This is an older generation grade that is no longer recomended by Sumitomo
The recomended modern alternative is :ACK3000
The data below is the data for ACK3000 However, It should be fairly accurate also for ACK300

From Sumitomo's website:

Our 1st recommended grade for milling cast iron. Adopts a high thermal conductivity carbide substrate and a new coating with excellent wear resistance and chipping resistance, realizing stable long tool life over a wide range of cast iron machining operations.

Application Range for ACK3000 (ACK300)

* If you don't understand the below table? Read This Explanation to make the most out of it!

Equivalent Grades for ACK3000 (ACK300)

The most compatible grade from each brand!

A higher score (Up to 100%) means the grades are more compatible. A lower score or a particular grade not listed does not mean it is not a good grade. It means that its physical and mechanical properties are less close to ACK3000

Cutting Speed recommendations for ACK3000 (ACK300)

How to use our Cutting Speeds Recommendations

  • Pay attention that your desired unit (SFM or mm/min) is selected!
  • Speeds are given for stable conditions of Machine, Tool, and workpiece.
  • An empty cell means the grade is not available for the combination of material and application.
  • For more specific Cutting Speeds Recommendations use our advanced

Unit Selector:

SFM mm/min
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