New Uddeholm tool steel has integrated surface coating

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 21 March 2008



(2008), "New Uddeholm tool steel has integrated surface coating", Anti-Corrosion Methods and Materials, Vol. 55 No. 2.



Emerald Group Publishing Limited

Copyright © 2008, Emerald Group Publishing Limited

New Uddeholm tool steel has integrated surface coating


New Uddeholm tool steel has integrated surface coating

Article Type: New materials and equipment From: Anti-Corrosion Methods and Materials, Volume 55, Issue 2.

Uddeholm Vancron 40 is the most exciting tool steel Uddeholm has launched in many years. This is a revolutionary tool steel for the powder compacting industry, offering low- friction properties, excellent galling resistance and superior adhesive wear resistance. It is the winner of this years European Powder Metallurgy Association Award of Merit in the category equipment/materials.

Uddeholm Vancron 40 is different to the standard PM steels used for cold work applications. It is alloyed with nitrogen, creating a steel with an integrated “surface coating”. The result is a tool surface with very low friction that guarantees a much better resistance to galling, cladding and adhesive wear. In cold work applications like forming of, e.g. advanced high-strength steels, stainless steel and mild steel, galling and adhesive wear are often the dominating tool failure mechanisms. This can also be the case in powder compacting, cold extrusion, deep drawing and blanking. Until recently, the common way to increase galling resistance has been to nitride the tool or to apply surface coatings; like CVD, PVD or Toyota Diffusion.

Uddeholm Vancron 40 is the start of a new era. This steel does not have to be surface treated or coated as it already has a very effective integrated “surface coating”. This means that the time and cost factors associated with the coating operation are eliminated. Uddeholm Vancron 40 was designed with help of the Thermo Calc thermodynamic computer programme. Based on previous experiences, it was envisaged that a martensitic tool steel with a high volume of dispersed, hard nitro carbides, primarily vanadium rich nitro carbides, would have the demanded material and functional properties. It was then possible to calculate the steel composition having the requested amount and composition of the different phases.

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