RHN

Rockwell hardness number

A measure of Rockwell hardness; determined by use of a machine having an indentor which can be loaded; the number is derived from the net increase in depth of impression that the indentor makes in the material as the load on the indentor is increased from a fixed load to a higher load, and then returned to the minimum load.

RHN

Acronym	Definition
RHN➣Regions for Health Network (World Health Organization)
RHN➣Red Hat Network
RHN➣Rocking Horse Nursery (UK)
RHN➣Regional Hub Node (various locations)
RHN➣Registered Holistic Nutritionist
RHN➣RedHat Network
RHN➣The Royal Hospital for Neuro-Disability (London, England)
RHN➣Russian Hill Neighbors (San Francisco, California)
RHN➣Revue Historique Neuchâteloise (French)
RHN➣Rural Housing Network
RHN➣Robin Norwood
RHN➣Rockwell Hardness Number
RHN➣Rh-Null, Regulator Type
RHN➣Right-Handed Neutrino
RHN➣Republic of Haven Navy (Honor Harrington science fiction novels)
RHN➣Remote Health Node (NASA)
RHN➣Reducing Hex Nipples
RHN➣Repeater Hybrid Network
RHN➣Radio Habbo Net
RHN➣Rougham Hall Nurseries (UK)