Parent Material Group
The base material group is a classification of materials based on their chemical composition and properties. It helps in selecting suitable welding processes.
Physico-chemical mechanism of action
The base material group classifies metals and alloys according to their chemical structure and metallurgical properties such as hardness, density, and corrosion resistance. This facilitates the selection of welding processes and consumables.
Metallurgical relevance & risks in welding
Incorrect assignment to the base material group can lead to unsuitable welding processes, resulting in welding defects such as porosity, distortion, or brittleness. It is crucial to identify the correct group to achieve optimal results.
Workshop practice & action instructions
1. Identify the chemical composition and properties of the material.
2. Assign the material to the corresponding base material group (e.g., steel, aluminum, nickel alloys).
3. Select a welding process suitable for that group (e.g., TIG welding for thin-walled steels, MIG welding for general applications).