[...] Here is the deal, is the Apple watch sport treated aluminum durable enough as the SS and Gold for everyday use? Absolutely!!! Even with the Ion x glass. At the end of day its all about choices, u get which ever watch that's right for u.
Yes, this is exactly right.
You are looking at the numbers for annealed 316 SS. After it's machined SS is heat treated and it's hardness can be as high as 217. I was a machinist for many years, and I know these materials pretty well.
First of all; annealed = heat treated, you can't make 316L without heat treatment in the first place. Second, we are using numbers from an Aerospace website (ironically) my profession. Finally, I think we are ultimately saying the same thing, just in different ways.
Look at the Tensile Strength figure from ASM (that will be relevant regardless of anneal treatment) and we'll see 572MPa for the Al 7000 and 560MPa for the 316L. They are nearly identical; the areas that the 316L begins to gain advantage are in yields, fractures, and elongations. SS will hold its bonds longer than Al, that's just basic chemistry. The bottomline however, is that unless we are machining these metals the average customer 99% will not notice a "durability" benefit.
SS, plain and simple IS stronger and will hold it's shape better: so here's what will happen: I take a wood rod and smack the SS and Al with equal force, neither will dent. I take a metal rod and smack the SS and Al with equal force, you will get a dent ON BOTH, the dent will be slightly bigger on the Al. Basically, anything that can dent the Al will dent the SS, but the dent in the Al will be bigger (more shapely).
Folks just get whatever you want and don't worry about it.
/rant