Stevie, I started a similar thread when I found that my shaves with Stainless Steel blades (I had never used a blade branded with Stainless Steel until I tried Sharks) were much smoother than any blade I'd tried with the word "Chrome"
I tried Red IP's again this week and I came out all red and blotchy again, this was the first time I'd used a "Chrome" blade since I last had really bad shaves.
It's maybe all BS and it might all be in my mind but I find that shaves with SS blades are a lot smoother, if slightly less close, than shaves with Chrome blades.
I know jack about metallurgy so I don't know if all blades are SS then have other coatings or what the deal is. All I know is that I can have close comfortable shaves with almost any blade branded Stainless Steel and always come out irritated when using Chrome blades.