I don’t know about the ss one but i have a ‘normal’ GI rear wheel with solid 10mm axles and it is well meaty! The rim alone is 600g IIRC. It also has a ‘loud but not hope loud’ freehub. Nicely made hub and rim for the money but I value it for play/jum/dh indestructibleness rather than weight!
..but then ss specific hubs at that sort of price are few and far between. Most of the less expansive ones are for dirt jumping so also relatively heavy. You probably have to look at hopes for something significantly lighter. Or post on classifieds, someone wealthy will have an old one from when they bought Chris Kings knocking about in the shed.
BTW you also get a better dished therefore stronger wheel with an ss hub.