Hardness Testing

In general hardness means the resistance which a body opposes to penetration of a harder penetrating body.

In the industry hardness testing is used for different purposes, e.g. in order to evaluate the hardness of material surfaces, to carry out material confusion testing, or for weld seams, which are needed for specific application.

Testing methods are: The Brinell test of hardness when a ball with a testing load is pressed vertically into the surface, and afterwards the diameter of impression determines the hardness value.

For the Vickers pyramid hardness testing a test load is also pressed vertically into the surface, in this case the impression diagonal indicates the hardness value.

Furthermore, there are the Rockwell hardness test with initial load, the impact hardness test using a ball-type hammer (Poldi-hardness testing device ) and the resilience test of hardness, when a ball falls through a pipe onto the testing body and jumps up again (Equ-Tip).

Hardness testing

VOGT Ultrasonics GmbH

Ehlbeek 15
30938 Burgwedel, Niedersachsen
Tel.: +49 5139 9815-0
Fax.: +49 5139 9815-99

Business hours:

monday - thursday: 8:00 - 17:00
friday: 8:00 - 15:00


Accredited acc. to

DIN EN ISO / IEC 17025:2005

Certified acc. to

ISO 9001:2015 und DIN EN 9100:2018

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