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 ...

When judging the quality of metal products, there are things that cannot be determined by appearance or dimensions ...

Bullion dealers and pawn shop owners require appropriate tools to ensure they are providing their customers with pure gold, silver, and other precious metals. Several analytical methods are used to ...

Modern labs test metal strength faster than ever by replacing the slow machine-a-sample-and-pull-it-apart routine with automated systems and indentation-based methods that produce a full stress-strain ...