Stainless Blades 2

[nornrich]

All,

I am looking for a Series of Stainless that will take and hold a cutting edge on material of about 0.01" - 0.017" of thickness. It will be coated with an anti-stick material after grinding the edge. Also any recommendations on what type of grinding would be best. Chemical vs. Mechanical?

Regards,

Rich.....

Richard Nornhold, PE

 

[Goahead]

One of the hardest stainless steels is probably 440C.
The suitability depends on application.

http://www.welding-advisers.com/

 

[mcguire]

Thanks for using this forum. There is another one, however, that specializes in this specific area. It is "Sharp Tool Engineering".

Michael McGuire

http://stainlesssteelforengineers.blogspot.com/

 

[nornrich]

thanks mcguire,

Can you point me to where the "Sharp Tool Engineeing" forum is? I remeber seeing it once upon a time, but can't seem to locate it now.

Regards,


Rich.....

Richard Nornhold, PE

 

[unclesyd]

Richard,
That Forum isn't active the present time. Hopefully SS is still a material so lets try again.

I would post in either the "Material Engineering other Topics" under the "Materials Engineering" Banner or the "Steel and Stainless Steel Engineering" Forum under the " Engineering Forums by Industry" Banner.

Look in the subject block on the left hand side under the greeting for the Forum Lists.

 

[nornrich]

Thanks unclesyd! Have a good weekend....

Rich.....

Richard Nornhold, PE

 

[EdStainless]

440C is the standard choice. It holds up well in mildly corrosive environments and it can be ground to a good edge.

= = = = = = = = = = = = = = = = = = = =
Corrosion, every where, all the time.
Manage it or it will manage you.

http://www.trent-tube.com/contact/Tech_Assist.cfm

 

[mcguire]

Sorry about sending you to a defunct forum. Knife blades are most commonly 420. You can get harder and therefore more wear resistant blades with 440A and even better with 440C. There are even more high tech alloys if you want ultra performance like some clients I've had who want to make "boutique" kitchen knives.

Michael McGuire

http://stainlesssteelforengineers.blogspot.com/

 

[EdStainless]

I know of some industrial razors that use 440C, harden, grind and hone, then they temper and difusion coat in one operation. You can form TiC difusion coatings using the C in the alloy. This blunts the edge slightly, but greatly improves the durability of the edge.

= = = = = = = = = = = = = = = = = = = =
Corrosion, every where, all the time.
Manage it or it will manage you.

http://www.trent-tube.com/contact/Tech_Assist.cfm

 

[dgallup]

It depends on what you are cutting and how much you can afford to spend but the current state of the art blade steels are CPM S30V and Hitachi ZDP-189. The latter is commonly used at 67 Rockwell C which is 6 to 8 points harder than most anything else available. Amazingly, it is not as brittle at that hardness as 440C at 60 RC. 440C is certainly more available and easier to work.