Question: what is the difference between all clad stainless and d3?
Answer: Number of Bonded Layers: The most significant difference between All-Clad D3 and D5 cookware is how they are constructed. D3 cookware is constructed with three bonded layers (or ply's), which is why it's often referred to as All-Clad Tri-ply. D5 cookware is constructed with five bonded layers (5-ply construction).