Rockwell testing is one, and probably the best-known, way of determining how hard the metal is.
The one encountered most frequently in this industry is the C scale, and ratings can run from C20 to C70-the higher the number, the harder the metal. ...
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The one encountered most frequently in this industry is the C scale, and ratings can run from C20 to C70-the higher the number, the harder the metal. ...
More Information