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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.
References in periodicals archive ?
From a doctrinal perspective, the impending obsolescence of the THN puts more importance on the RHNs, as divisions now must remain reliant on the RHN throughout the duration of an operation.
Gore-based RHN Judi Dennis said the scholarship had meant time for more extensive reading and research than ever before.
Additionally, the RHN provides failover by backing up the THN and providing continuity of operations with other RHNs.
In cases where operational requirements exceed the capacity of a unit's organic hub node, an RHN hub node can accommodate the overflow.
We use RHN Satellite, which is a key component to the management of all of our Red Hat servers, whether on the mainframe or in our distributed environments.
5 million subscribers across radio, television and print media platforms to drive advertising revenues in the year of RHN.
WASHINGTON -- RHN Media (OTC PK: RHNA) is pleased to announce a well-respected firm, TRI-STATE Capital (TSC), has upgraded their equity rating on RHNA.
Through our dogged perseverance and the unwavering support of our loyal shareholders, we have grown the distribution of RHN.
Our essence, investment, reputation and street credibility is concentrated in the acronym RHN.
The support provided by the administrative community of hohe rhn is to be provided by means of investment aid within the framework of the lack of profitability.
com) immediately saw the vision and potential for RHN.