superficial Rockwell hardness test

superficial Rockwell hardness test

[¦sü·pər¦fish·əl ′räk‚wel ′härd·nəs ‚test]

(metallurgy)

A test to determine surface hardness of thin sheet material which applies relatively light loads producing minimal penetration and damage.

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.