hardness testing method
Hardness testing methods determine how hard a material is. They measure the resistance to penetration by a harder body. This is important for the strength and service life of components.
Physical-chemical mechanism of action
Hardness testing methods measure how hard a material is by testing its resistance to penetration by a harder body. This is achieved by pressing or indenting a hard body into the material.
Metallurgical relevance & risks in welding
The hardness of a material affects its strength and service life. Too high resistance can lead to fractures or cracks, while too low resistance makes the component too soft and unable to hold. In welding, it is crucial that the hardness level remains consistent throughout the workpiece to ensure a safe joint.
Workshop practice & action instructions
Use standardized hardness testing methods such as Brinell hardness (HB), Rockwell hardness (HRC), or Vickers hardness (HV). The measurement should always be performed under the same conditions to get consistent results. In welding, it is important that the hardness level remains uniform throughout the workpiece. This can be achieved by precisely controlling welding parameters such as temperature and time.