Stress corrosion cracking

Stress corrosion cracking is a type of corrosion that happens when a metal gets very weak and breaks when it is under stress (bent, stretched, or squished). It usually happens when metal is in contact with certain liquids, like salt water. The metal loses molecules (tiny pieces) and gets weaker and weaker until it will break even if it is not being bent, stretched, or squished. It's like when a piece of paper gets wet and falls apart or crumbles.