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 ...

In this interview, AZoM talks to Christine Desplat, R&D Engineer at Master Bond, about how to test the hardness of adhesives. Hardness is typically indicative of an adhesive's overall functionality.

Although some people may consider it to be â low tech,â using pencils to test hardness is still a method used by many coatings manufacturers and some finishing shops. The test uses special pencils ...