Test Methods
Hardness testing methods and scales
There are four principal standard test methods for expressing the relationship between hardness and the size of the impression, these being Vickers, Rockwell, Brinell & Knoop. For practical and calibration reasons, each of these methods is divided into a range of scales, defined by a combination of applied load and indenter geometry. Select one of the below mentioned test methods for more details.
Vickers Hardness Testing
Uses a diamond pyramid indenter to measure hardness across metals, with scales suitable for very small impressions.
Rockwell Hardness Testing
Measures hardness from indentation depth, offering fast results with limited sample preparation across metals, plastics and composites.
Brinell Hardness Testing
Uses a ball indenter and known force, often applied to castings, forgings and materials with coarse structures.
Knoop Hardness Testing
Applies an elongated diamond indenter for microhardness testing, especially near edges, coatings and small material variations.
