@Hollow7F So, I am greek, born and living in Greece, and since Greece had a lot of trade in the mediteranean, I can explain a few things about Orichalcum. Orichalcum is a latin word coming from the word Orichalkos which is literally the combination of the words Oros (mountain) and Chalkos (copper). It's a metal that existed and has been identified as a copper alloy (so it's closer to bronze). It was considered rare and strong in an age without iron armor and weapons, the Bronze age. Damascus steel swords from the time of the original Damascus steel weapons do exist even today, and they are quite sharp too because of the qualities of said steel. However the art of making it was lost forever a few centuries ago and now you will only find bad immitations of it (purely made for the sake of the famous pattern) that are nowhere nearly as strong as the original mixture that created the Damascus steel. Nobody knows the ratio of impurities, the heat it needs to be tempered at, etc. They are trying to re-discover it by experimentation and also make a quick $
What you linked is a 101 guide for the blade nerd's online purchase. These people don't know history, they just like "shiny". which is why most of them become authors and dub mountain copper as some legendary metal because ancient greeks, who didn't even have iron, considered it strong. Now we know it is not so strong.
Both original Orichalcum and Damascus steel have been found in excavations. Orichalcum has been recreated close to perfection. Damascus steel, on the other hand, has never been recreated perfectly. And nobody knows the recipe. Because, while impurities in metal are often unwanted, Damascus steel was created on purpose by adding impurities (such as carbon) to make it denser. Yes, Damascus steel was made with the folding method but it was stronger than any other steel used to make a folded blade. Folding means that the blade gets chipped away, fold by fold, with use and passage of time. Damascus sword had a longer lifespan and the blade would not get chipped because "density".
Here are the differences between a donated 18th century sword actually made by Damascus steel and one recreated. While the pattern might seem the same, you will see that it's not the case. https://www.mse.iastate.edu/news/john-verhoeven/