Test Force Levels
Test force levels are standardized loads to make hardness values comparable. They prevent unacceptable edge effects and plastic overloads.
Physical-Chemical Mechanism of Action
The test force levels are defined loads applied to metals to measure their hardness. These loads influence the behavior of the material structure under mechanical stress.
Metallurgical Relevance & Welding Risks
Incorrect test force levels can lead to inaccurate hardness values, which poses risks to the strength and service life of the material. Too high loads can plastically overload the material structure and reduce its hardness, while too low loads may not provide enough information about the actual hardness.
Workshop Practice & Instructions
Always use the correct test force levels according to the material specification. For steel types like DIN 1005, loads between 2.5 kN and 3 kN are typically recommended. Pay attention to the precise application and the measuring device to achieve reliable results.