Yeah it’s kind of insane what a miracle material steel is. Especially for how long ago it has been discovered and we still haven’t found another material that is better in every way, like how steel replaced iron or brass or copper. The balance of all the material properties for its weight/volume and its manufacturability and price is just unbeatable.
For scifi purposes,I tried to find another material that could beat it if cost wasn’t an issue and I couldn’t. Closest ones I could find that aren’t already obiquitous in popular consciouness like titanium, aluminium, tungsten carbide etc. are Molybdenum and Beryllium. But yeah, they don’t exactly beat steel either.