An $18-8$ stainless steel plate is welded and parts of it stay at $1300F$ for $10$ minutes.

a$)$ What is the maximum$-$tolerable $C$ content to avoid sensitization$?$

b$)$ For $T=1100F,$ plot the maximum tolerable time to avoid sensitization as a function of the carbon contents of the alloy. Use a linear scale on both axes. Comment on which one of the two contents. Carbide precipitation froms in the areas to the right of the various carboncontent curves.variables is more critical.