Bass strings, in general, are lighter than guitar strings. It's because of the geometry of the wrapping - there are more voids in bass strings, by design, typically. For guitar strings, take a 0.056" as an example: Stainless unit weight: .00060297 lb/in (Say this is 100% for reference) Nickel Plated Steel: .00057598 lb/in (95.5%) Phosphor Bronze: .00063477 ib/in (105.3%) Chromes (Stainless flat wound): .00059075 lb/in (98.0%) Bass: .00053791 lb/in (89.2%) For an electric guitar, the best you're going to get with a D'Addario product, in terms of tension, is the Stainless Steel. Of course, if you made a plain steel .056", it'd have a unit weight of about .000695 lb/in (115.3%), but you'd need a torch or at least a dremel to trim the end of the string. When I worked as a tech, I had a couple of customers who played acoustic guitars with plain G strings on them. I actually blunted a pair of diagonal cutters the first time.