Quality level C
Evaluation group C is a medium quality level per ISO 5817 with acceptable weld imperfections. It's suited for parts under average loads in machine and steel construction.
Physical-Chemical Working Mechanism
Evaluation group C includes weld imperfections that are within acceptable limits. This means the weld is not perfect but still has sufficient mechanical strength.
Metallurgical Relevance & Risks When Welding
The imperfections in evaluation group C can lead to minor cracks or distortion. However, these are not as severe as in higher quality levels. It's important that the parts still provide adequate service life and safety.
Workshop Practice & Operating Instructions
For evaluation group C, heed the following:
• Careful preparation of the joint is essential to keep imperfections to a minimum.
• Use suitable welding processes and consumables that give enough strength.
• Thoroughly inspect for cracks or distortion after welding and fix them if needed.