(02-13-2018, 09:26 PM)Mark Reich Wrote: IMHO, if Mr. Mike and Mr. Jan have even spent so much as a few days trying to quantify the RHC scale, and aren't coming up with an answer, that tells me it's something that simply doesn't have a mathematical formula. I know it's hard to believe, because it sure seems like it ought to able to be explained mathematically, but if you can't find the formula for something that's been used for a century, there might not be one.
Mr. Mark, I worked with Mike independently on this topic, and for a long time it looked like we will not find a formula that would describe the non-linearity of the HRC scale. That's why we worked with hardness charts relating hardness, indenter area and pressure generated by the conical tip of the indenter.
Finally, when we were correcting minor numerical differences between our results, the Holy Spirit has enlightened us, and we succeeded to find a very simple formula that describes the non-linearity of the HRC scale. We will post it here soon.
Jan