Question

3. What are the different types of indenters used in hardness testing?​

Answer 1

☆Answer☆

Rockwell Hardness Test.

Rockwell Superficial Hardness Test.

Vickers Hardness Test.

Knoop Hardness Test.

Answer 2

Answer:

Two types of indenters are used: a 1/16” diameter steel ball (used for surface hardnesses of brasses, aluminum sheet, etc.) and the N-Brale penetrator. This Brale penetrator is like the one used in the standard Rockwell hardness tests except the spherical end is shaped to higher tolerances.

Explanation: