Bendalloy in the books is an alloy of cadmium and bismuth (https://coppermind.net/wiki/Bendalloy) not cadmium and lead. The real world alloy for Bendalloy is 50% bismuth, 26.7% lead, 13.3% tin, and 10% cadmium.(https://en.wikipedia.org/wiki/Wood%27s_metal)

This is true. I chose the current recipe because Lead was already in the mod and common in other mods, and I didn't want to add another metal which was only useful in crafting

Oh ok that makes since

Then that is probably why you made Nicrosil an alloy of Iron and chromium instead of nickel and chromium