Stainless, Bushed PRW Rocker Arms

Ampco 21 is way harder than mild steel not to mention it resists abrasion and cutting with cutting tools like a lathe bit.
There are some very strong bronze alloys but not all of them are. And just like certain steels, some of them excel in certain areas or features. I know they made non-sparking wrenches and other tools from very strong alloys that perform as well as steel without the potential of making a spark in an explosion sensitive area. I’ve got a punch from my dad made of that stuff and it’s amazing the beating it can take and not be damaged.