Play the long game. The Era ring is made of three parts, letting us use the best-performing material for each. For the teeth, that's stainless steel, which is stronger (and harder) than titanium, with a wear life five times that of aluminum.
Don't mess with the best. The aluminum crank interface is tried, tested and proven on Race Face chainrings. It's light, it's durable and with CINCH it's easy to swap out ring sizes.