Bruh, dont use cheap metals to grind up weed. Only use titanium or aluminum, these are made of alloys. All metals transfer some ( very small but measurable over years) amounts of the metal into the weed,so over the years you endup inhaling burnt oxidized hydrocarbons, the same with alloys except that it dont oxidize the same and passes out of the body harmlessly. At least thats what a doctor i worked for told me.
