A material’s hardness relates to its mechanical resistance when subjected to mechanical indentation by another harder body. Diamond is considered the hardest natural material and is typically used for ...

Compared to classic testing applications, hardness testing in powder metallurgy needs completely different procedures and parameters. Samples must be prepared well to permit the hardness test and ...

INCLUSIONS and structural elements of metallographic specimens can be identified by examining the effect of various etching reagents. This method not only takes up a great deal of time, but also ...

When designing metal parts, it's important to specify their hardness. However, many engineers have only a shaky understanding of what hardness actually is, or how it's measured. There are good reasons ...