The material of the tracks was very resistant to outright corrosion. I have seen in person the Vimoutiers Tiger, and the LaGleise King Tiger, plus most of the well known AFV's from the Aberdeen Proving Ground in Maryland which have been outside for 70 years plus & the tracks are only very lightly tarnished.
The actual armour of the tanks in that era had a peculiar metallurgical composition which even today is highly resistant to full on oxidisation.
The tracks had a composition that can be compared to that of railway track material, and those only have surface oxidisation present.
The Panther in Hoffalize has pristine welds & only shows oxidisation in areas caused by the destructive forces that ended its service..........along with its crew. Standing on its deck was a subtlety moving moment.
The actual short combat service life before destruction or breakdown of AFV's was actually quite short.
Certainly short of deep flaking rust as we all know it.
Thin sheet metal like guards, exhausts etc- sure- they flake quickly, but the heavy metal primary components dont.
Your tracks are very nicely done, good work on them mate