Rockwell Hardness Conversion: B to C
Rockwell Hardness Conversion: B to C
(OP)
I have a material that is HRB 60. I know this material is too soft for my application. I have another material that I would like to use that is HRC 60. All the conversion charts I've seen do not list a conversion between B and C that starts as low as HRB 60 (they start at about HRB 100). How can I compare apples to apples? i.e. How can I convert an HRC 60 to an HRB value?





RE: Rockwell Hardness Conversion: B to C
RE: Rockwell Hardness Conversion: B to C
RE: Rockwell Hardness Conversion: B to C
Look around. You should be able to find a chart showing hardness conversions. I am looking at my old metalurgy book from college.
For steel, Rockwell B60 is equivalent to a tensile strength of 55,000psi. Rockwell C60 is equivalent to something over 300,000psi.
RE: Rockwell Hardness Conversion: B to C
Katmar Software
Engineering & Risk Analysis Software
http://katmarsoftware.com
RE: Rockwell Hardness Conversion: B to C
I have a little problem with your Uconeer, which nonetheless I find handy and very useful:
Can't perform conversion from 60 HRC to tensile strength, as if this upper threshold were out of acceptable range (it works up to 59.9 HRC).
RE: Rockwell Hardness Conversion: B to C
Also under most conditions of routine testing Rc 59.5 and Rc 60 are the same entity. You also find that the reliability of the conversion from one scale to another falls off or subject to interpretation at the extremes.
Checkout the site linked below and download "Fundamentals of Rockwell Hardness Testing"
http
RE: Rockwell Hardness Conversion: B to C
Thanks for your post, anyway I have probably been misunderstood (damn, English is not my native language). I was not questioning the fact that the upper limit is established in 60 HRC, but rather that despite of the fact this value seems to be regarded by Uconeer as an accessible value for conversion (HRC range from 1.7 to 60.0), the program does not allow to perform any conversion from 60 HRC to any tensile strength. It seems the upper limit taken into by Uconeer is 59.9 HRC (instead of the reported 60 HRC). So I was only trying to advice about a small, minute, even trivial bug to the author of the program (maybe this is not the most opportune site).
RE: Rockwell Hardness Conversion: B to C
Katmar Software
Engineering & Risk Analysis Software
http://katmarsoftware.com
RE: Rockwell Hardness Conversion: B to C
I absolutely didn't mean to complaint about Uconeer, nor to say "the product should do what it says on the box" as it is for free, and so I am not entitled to say this.
Probably I should have sent you a private e-mail and not use a public forum (my apologies for this). As I underlined in my previous post I do use frequently your program and find it very useful. You've definitely done a great job, even more appreciated as you distributed it for free.
RE: Rockwell Hardness Conversion: B to C
I wondered who wrote Uconeer...I use it frequently.
Good job, thanks on behalf of society for your contribution to knowledge.
Regards,
SNORGY.
RE: Rockwell Hardness Conversion: B to C
RE: Rockwell Hardness Conversion: B to C
RE: Rockwell Hardness Conversion: B to C
RE: Rockwell Hardness Conversion: B to C
@ione - I could see that you meant no offense, and I took none.
@SNORGY - thanks
@dgallup - thanks. There are so many things I would like to add, and many that are requested by the users, but there is so little time. One day...
RE: Rockwell Hardness Conversion: B to C
RE: Rockwell Hardness Conversion: B to C
65.7 HRB = 111 Brinell
That's as low as the scale goes on the one I found.
I don't know about linearity, so here are a few more:
100 HRB = 241 Brinell
90 HRB = 183 "
72 HRB = 126 "
so 10 pts HRB = 58 pts Brinell, and 18 pts HRB = 57 pts Brinell. . . Oops! it's not linear.
But as a ballpark guesstimate, the 60 HRB would be mid-80's to upper 90's Brinell.
RE: Rockwell Hardness Conversion: B to C