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| Home > General Chat > What is the standard Abbreviation for Rock Well Hardness | |||||||
 1346 Posts Member #: 2340 Post Whore Dublin Ireland |
11th Dec, 2008 at 06:05:58pm
As abouve what is the standard Abbreviation I have always took it as HR I hnow E is used for Standard penetration but a fello engineer is adamant that the Abbreviation is RC ? On 17th Feb, 2009 Rob H said:
I find the easiest way is to super glue the bolt to the end of one of my fingers. ______________________________________________________ |
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Site Admin  15300 Posts Member #: 337 Fearless Tom Fenton, Avon Park 2007 & 2008 class D winner & TM legend. |
11th Dec, 2008 at 06:08:36pm
If my memory serves there are two different tests that give Rockwell hardness, HR(B) and HR©. I think one is a pointed thing dropped to thesurface to be tested, the other is a ball bearing or something similar, you then measure the indent left.
On 29th Nov, 2016 madmk1 said:
On 28th Nov, 2016 Rob Gavin said:
I refuse to pay for anything else Like fuel 😂😂 |
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 6274 Posts Member #: 509 Post Whore Isle of Man |
11th Dec, 2008 at 06:21:56pm
i think toms right, i know most knife manufactures quote rc for hardness "Turbo's make torque, and torque makes fun"
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 11046 Posts Member #: 965 Post Whore Preston On The Brook |
11th Dec, 2008 at 06:29:39pm
Try a search for 'durometer'
Edited by Sprocket on 11th Dec, 2008. On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be... So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'... On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........ |
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 9326 Posts Member #: 59 First mini turbo to get in the 12's & site perv Herefordshire |
11th Dec, 2008 at 06:33:09pm
Rock 'ard? |
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 966 Posts Member #: 358 Post Whore Snetterton, Norfolk |
11th Dec, 2008 at 10:20:43pm
Looking over my college work it all depends on the test method. We used a 120 degree diamond cone in our tests at college and the units were HRC. But the general denotation was HR then the letter was added afterwards. It also depends on the forces used in the test. |
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