1. How will you identify materials based on their hardness? Give examp

1.	1. How will you identify materials based on their hardness? Give examples.
Answer» Hardnessofmetalsis usually done using an indenter, with a "hardnessnumber" being related tothedepth of theindentation. Ceramics and other very hardmaterialsare often measured using a scratch method. Plastics and other softmaterials'hardnesscan be measured using rebound and other methods.

1. How will you identify materials based on their hardness? Give examples.

Answer»

Hardnessofmetalsis usually done using an indenter, with a "hardnessnumber" being related tothedepth of theindentation.

Ceramics and other very hardmaterialsare often measured using a scratch method.

Plastics and other softmaterials'hardnesscan be measured using rebound and other methods.