Archeologists find the Persians discovered a stainless steel 1000 yrs before its modern invention

[MarkOU]

Fascinating find

1,000-Year-Old Precursor to Stainless Steel Found in Iran, Surprising Archaeologists

Chromium steel, commonly referred to as stainless steel, is thought to be a recent manufacturing innovation, but new evidence suggests ancient Persians

gizmodo.com

 

[batchaps4me]

Modern stainless is about 13% chromium(IIRC) instead of the 2% used back then. That was a cool first step, especially for the known science of the time.