What are some common defects in aluminum products?

Common defects in aluminum products include porosity, which refers to small holes or voids within the material; surface defects such as scratches, dents, and discoloration; mechanical defects like warping or deformation; and metallurgical defects such as inclusions or impurities. Additionally, aluminum products can suffer from corrosion, which can lead to pitting or general surface degradation, and stress corrosion cracking, which occurs under certain environmental conditions and stress. Each of these defects can impact the structural integrity, appearance, or performance of aluminum products.