How to test hardness of diamond?

Hardness refers to the extent of the ability of a material to withstand indentation or injury. Simply put, it implies the ability of an object to resist scratches. Yes scratches, not large holes or cracks. And there is no better object to demonstrate hardness...

How to test hardness on aluminum?

Aluminum belongs to the boron group of metals in the periodic table with an atomic number of 13 and Al is its symbol. The hardness of metal means its ability to resist drilling, abrasion, deformation, wear/tear or indentation. Aluminum is one of the highly important...
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