VinnieFOne thing I never hear talk about is the metallurgy of ski edges. In tools or car parts or something there's always a lot of talk about 'sure, the product made in China is exactly identical and specs, but the metallurgy just isn't as good' so you can expect that tool or part to wear out faster or break easier.
There are a hell of a lot of different types and ways of making steel that all have different results. Do ski companies care about this or look to experiment with this or do they just get what comes from the factory and be happy with it? ON3P say they use the thickest edge available, but would you need the thickest edge if you picked a steel that had the optimum carbon content for example. There are a million different low alloy or allow steels that all are good for different purposes, from my experience with ski edges it seems like the steel used is just whatever grade nothing steel that would never be acceptable for a high-wear surface in any other application.
We use metallurgy to get the ideal edge anneal on the tips and tails of our skis and even brought a metallurgist in to help consult us on how we treat our edges in house. Those tests are on-going, but we plan on building our own oven in the next year to continue exploring those results (right now, most ski edge annealing processes, from ON3P to Atomic, are done electrically). We want some more options to better control cooling curves in the future.
As far as metal used for ski edges, though, you don't have a lot of options. There are two companies that supply ski edges. Metall Deutsch and C.D. Walzholz. They are huge metal suppliers (I believe CDW does around 2-3 million skis/snowboard per year). We use CDW because we like the way they stamp their edges better.
You have access to some variance in stamping patterns if you buy in bulk, and can even get custom patterns made, but the metal types of limited. I know CDW offers two grades of metal in their edges, one is a spring steel and one is chromium steel. They are definitely not just whatever-grade nothing steel and are the result of decades of ski edge development. For ski edges, you need a very specific material to ensure you are able to form carbon martensite with the right hardness to hold an edge, while maintaining the elasticity and yield for ski flex and ductility and fatigue strength for durability and long life.
We've probably spent several thousand hours heat treating edges in our factory, so we've spent more than a bit of time analyzing and testing cooling curves in steel. It is something we are really interested in, but the reality is that something at this volume and this set is going to take years to adapt and change. I am sure they are working on it internally, just as we are, put I wouldn't hold your breath on a park specific edge material being released in mass anytime soon.
Maybe someone K2's sized has the pull to ask them to start messing with the metal composition, but I wouldn't even be surprised if that wasn't the case.
We looked into getting a thicker edge made up (even thicker than 2.5 x 2.5) and just the base level order for a different stamping patterns was staggering. I can't even imagine how high it would be for a different type of steel.
In a nutshell, ski edges are how they are for a reason. Rails are an x-factor that throw a curveball at them, as the overwhelming majority of skis never touch a rail and the ski edges are designed as such.
I won't say too much more, but we are working within the scope of our current ski edge on ways we can improve the characteristic of the material specifically for park skiing, though it is going to be a long process ahead.