Originally Posted By: michael_d
Most 400 series SS alloys have a carbon component. There is also a duplex SS which is a high bread alloy with a high carbon percentage used when the strength of carbon is needed, but corrosion resistance of SS is also needed.

So not ALL SS variants rust, only those with a carbon component in the brew.

And kids, never try to clean carbon steel with acid.

Just saying...
smile

"Those who preach the myths of audio are ignorant of truth."