The hardness tests are performed on various materials to identify their rigidity.

This application defines the characteristics of the material being tested.

However, those characteristics are not the major property of the material tested.

Well, the tests are further defined as to measure the indentation of a material.

The material is less hard if it pressed deeper when the force applied.

And if the indentation is less, the material is hard enough to work under force and pressure.


Types of Hardness Test

To perform the test, the depth of the area to be forced is measured.

Then it is put into testing, with any of the various available methods.

The notable tests include Vickers test, Knoop test, Meyer hardness test, Shore test, and Rockwell Test.

The Rockwell test is the principal test conducted using the USA scales.

Ahead of that, the tests are further divided into two main types.

The macro-indentation and the micro-indentation test.

Where the macro-indentation tests are those applying 1 kilogram or even more force to the material.

Further, the micro-indentation is for the application of force less than 1 kilogram to up to 1 gram.

Ahead of that, there is also the nano-indentation which includes force applied even lesser than 1 gram.

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Usage of Test

The hardness tests are performed to test the characteristics of a material.

Alongside, they are also performed to test the functionality of the material.

The characteristic tests are performed to analyze the hardness, process behavior and the tensile strength of the material.

And the functionality tests reveal the impact and wear resistance, strength and functional behavior of the material under force.

Certainly, the core characteristics and fundamentals of the material could be revealed using the hardness tests.


Things to Consider Before Performing a Test

There are a few things to consider before a test is performed.

This helps in getting the desired results and reveal the properties and characteristics of the tested material.


Every material requires a different testing method.

Such as the small steel pallets would require the method involving the micro-indentation.

As the smallness of their size could better be accessed with under lesser pressure.


Choosing the right scale for the materials could yield precise and nearly the best result.

Anything with a greater depth could surely require the macro-indentation.

Likewise, the right scale should be applied for a better report.

Read the indentation testing guides to learn more about scales and the influence they could have on the test.