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113 rockwell surface finish info

reedeprintice

reedeprintice

Stainless
Joined
Feb 22, 2008
Location
Paradise , California
Here is something new "b4c 113" this is a new surface finish that can be applied to a steel surface that creates a Rockwell 113 harndess .004 deep and is not brittle. We are doing some R+D to find applications that this could be helpful with such as desert racing where surface wear can be hard to control. This hardness can be measured with a 2100 knoop miniture rockwell style test. Its a sinlge phase of fuse. Boron difusion.
 

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The theoretical maximum for Rockwell C is 100. An infinitely hard material would be Rc 100. It sounds like reedeprentice is trying to convert the HK 2100 (Knoop) value (slightly softer than silicon carbide at 2480), but it doesn't really work that way. Rockwell tests don't work on thin materials. You can use Rockwell Superficial tests, but they top out at 100 as well.

Diamond is about HK 7000
 
Last edited:
reedeprintice said:
Here is something new "b4c 113" this is a new surface finish that can be applied to a steel surface that creates a Rockwell 113 harndess .004 deep and is not brittle. We are doing some R+D to find applications that this could be helpful with such as desert racing where surface wear can be hard to control. This hardness can be measured with a 2100 knoop miniture rockwell style test. Its a sinlge phase of fuse. Boron difusion.
Click to expand...

What sort of processing temperature? Does it effect heat treatment or part hardness?
Is it suitable for cutting tools?
 
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