Just to confirm I have no way of proving whether or not they're SSNice. I'm grabbing the 26 sweeps for the ssp then
Sent from my Pixel 3 XL using Weber Kettle Club mobile app
Looks like Weber has transitioned to the ferritic 430 for all of their stainless except for their Summit line. Understandable since the price of nickel, a pricey anti corrosion component of 304 has gone up quite a bit during the past 10 years.
430 is slightly more prone to corrosion than 304, but it should last much longer than aluminized steel.