Hardness test, Roughness test, Ferrite content
The hardness test on a material determines the resistance of the surface to penetration by a punch. Rebound or penetration tests are generally used to characterise the hardness of metals, plastics and elastomers.
The hardness test, which is widely used in quality control, is used to compare or estimate the strength or stiffness of materials.
The roughness test determines all irregularities of a surface with a micrographic and macrographic character.
Surface preparation is one of the most important factors for the successful application of a coating or surface treatment and thus guarantees a long service life.
The ferrite content determines the properties of austenitic and duplex steels. A lack of ferrite leads to significant structural weaknesses, while too high a ferrite content reduces strength, corrosion resistance and formability.
For more information