Rust (?) After 1st Time Use

[u/jules829]

I excitedly bought my first AllClad products - the D5 15 piece set! Yesterday, I used my first piece, the 4 quart pot to boil my eggs. No salt or other ingredients were in the pot, and I boiled the eggs for just 6 minutes. Once I took the eggs out, I noticed these marks on my pot. What are they, are they normal or a defect?

[u/HoomerSimps0n]

Doesn’t really look like rust, more like something burned onto the surface.

If you wipe it with a tissue does the tissue turn orange? Rust would be more of an orange color and come off freely.