-- The Home Page of the Finishing Industry
23+ years of serious education, promoting Aloha,
& the most fun you can have in metal finishing smiley
    no popups, no spam
on this site
current topics
topic 12109

Titanium/Teflon plating high speed steel


Alright, my interest is blades. I'm partial to high speed steel. I have seen sites that sell high speed steel drill bits with titanium coating, advertising a rockwell of 102. Now, I'm not hoping to achieve this, but I'm wondering if there's a way to plate the high speed steel knife blades I make with titanium ( 6-6-2 or better preferably though I understand that might not be possible) and ...( I know this is getting long) possible even place a Teflon coat on over the titanium ?

I have access to fairly complete shop. Would be deeply grateful for info on this.


Matthew Shorey
- Cumberland, Maine, USA


Hello Matthew!

The high speed drill bits are actually coated with Titanium Nitride, not titanium. You CAN sputter coat with titanium, but it is usually a stupid idea because it can give you a soft, easily galled layer without corrosion resistance, a bozo combination. I've only used it to satisfy some specsmanship issues on spacecraft applications.

You can certainly get the blades TiN coated, or CrN coated to provide a bit more corrosion resistance, or ZrN coated, to make it look golden, or combinations of those. These are all Physical Vapor Deposition (PVD) processes, done in a vacuum chamber. Richter Precision have done a fine job for me: give them a call, and they'll tell you all about what PVD can, and can't, do.

The Rockwell C reading of 102 is bogus, however; they've taken a microhardness reading of the coating and invalidly converted it to a Rockwell C, by incorrectly assuming a linear correlation. It ain't so. It is hard, harder than the Rockwell C scale goes, but still. . .

Good luck!

lee gearhart
Lee Gearhart

This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Comment to THIS thread START a NEW threadView CURRENT TOPICS

Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices

©1995-2018, Inc., Pine Beach, NJ   -   About   -  Privacy Policy
How Google uses data when you visit this site.