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RHN
(redirected from Rockwell Hardness Number)

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AcronymDefinition
RHNRegistered Holistic Nutritionist
RHNRedHat Network
RHNThe Royal Hospital for Neuro-Disability (London, England)
RHNRussian Hill Neighbors (San Francisco, California)
RHNRevue Historique Neuchâteloise (French)
RHNRural Housing Network
RHNRobin Norwood
RHNRockwell Hardness Number
RHNRh-Null, Regulator Type
RHNRight-Handed Neutrino
RHNRepublic of Haven Navy (Honor Harrington science fiction novels)
RHNRemote Health Node (NASA)
RHNReducing Hex Nipples
RHNRepeater Hybrid Network
RHNRadio Habbo Net
RHNRougham Hall Nurseries (UK)
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The Rockwell hardness number is a measure of the non-recoverable indentation after a heavy load of 588N for a period of 15s, and subsequently reduced to a minor load of 98N for another duration of 15 s.
Scratch Resistance of Mineral-Filled Polypropylene Materials by CHU, J.; XIANG, C.; SUE, H.-J.; HOLLIS, R. DAMON / Polymer Engineering and Science
A major load of 60,100 lb or 50 kg is then applied and released and the difference between the major and minor load is automatically registered by an indicator which reads directly the Rockwell hardness number.
Testing and inspection: the final step in assuring casting quality by Bex, Tom / Modern Casting
 
 
 
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