Steel Turning Grade combines tough substrate and CVD coating.

Press Release Summary:

With tough carbide substrate and Absotech Platinum CVD Coating, AC8025P Grade provides cutting edge chipping resistance and adhesion resistance in steel turning applications. Smooth surface treatment promotes adhesion resistance along ridgeline of cutting edge, and edge sharpness reduces chattering. This grade is suitable for such steel turning applications as continuous cutting, light interrupted cutting, and interrupted cutting.

Original Press Release:

Sumitomo Introduces Cost-Saving AC8025P Grade for Steel Turning

Mount Prospect, IL – Sumitomo’s new AC8025P Grade for steel turning achieves higher productivity and a longer tool life for significantly reduced machining costs.

Featuring Sumitomo’s own Absotech Platinum CVD Coating, combined with a newly developed tough carbide substrate, the AC8025P provides exceptional cutting edge chipping resistance and adhesion resistance. Significant improvements to the coating adhesion strength control residual stress and provide more than twice the chipping resistance as compared to conventional coatings, while maintaining wear resistance.

A smooth surface treatment greatly improves adhesion resistance along the ridgeline of the cutting edge. When machining low-carbon steel, rolled steel and other materials prone to adhesion, where problems such as peeling or chipping of the coating layer at the cutting edge, deterioration of the surface finish and reduced tool life may occur, the AC8025P increases tool life stability. Excellent edge sharpness greatly reduces chattering.

The AC8025P grade is suitable for a wide variety of steel turning applications, including continuous cutting, light interrupted cutting and interrupted cutting.

For more information, visit IMTS Booth #W-2422 or contact Sumitomo Electric Carbide, Inc., 1001 Business Center Drive, Mount Prospect, IL 60056, Phone: (800) 950-5202, Fax: (847) 635-9335, e-mail:, or visit the Sumitomo website at

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