From general reading and conversations with shaster makers in india, I have come to determine that sarbloh is either one or both of the meanings which I eluded to earlier,
as for mahapursh having shaster that were wootz, steel or damascus, all I can say is that shaster from 1700s and 1800s which have definitive proof off being sikh have been wootz, ( including Maharaja Ranjit Singh) so there's nothing wrong with having wootz or damascus shaster, as least not in my mind. Wootz and pattern weld steels are in many ways superior to pure iron.
I have heard about sakela and faulad from Hazur sahib singhs and have read several published papers and books regarding wootz.
If I have made any mistakes, please forgive me