I am new to forging (only started during quarantine) and I have been using almost exclusively railroad spikes.
I decided to go to the thrift store and look for other scrap metal to try and forge, but after a tent spike turned yellow (and I found out about the dangers of galvanized steel) I do not want to make that mistake again.
Is there a guide to picking usable scrap metal, or a way to identify is a metal is safe to forge?
Thank you all so much for your help.