I was looking for a tenor guitar but the scale is a little long for me. I love the sound of steel string acoustics and in my travels via Google I came across
this, from a player who did a pounds of tension for nylon vs steel strings, and came up with a very light steel set for a cheap baritone experiment. His theory was to match the tension.
I thought "Hmm". I hate the thought of steel strings on a uke causing damage! But. I found a bari for $55 (best offer) from Butler Music on eBay. Add shipping, I'm into it $69. I got a set of D'Addario 12 string guitar light steel strings (EJ36) because there were multiple of light strings and a better selection of sizes than say a regular 6 string light or extra light set. I used the .010, .014, .023, and .030 according to the aside about modulating the two bass strings. I could not find a string tension calculator on StewMac's site but did find one
here at McDonald Strings. I set the scale at 51cm and came up with approximately 57.2 pounds after converting from kg.
I adjusted the saddle down to about half its original height which leaves it at a medium action with a little room for adjustment on the nut, but a good height for both picking and using a slide, then strung up this cheap little bari and compared to the Aquilas it came with it went from dead and dull sounding to a baby tenor guitar, with a lovely zing and a lively personality. I can see minor top deflection of the same degree as when it had Aquilas on it. I figured it was a cheap experiment, and if it pops it's bridge and doesn't take any top with it, I will bolt the bridge back on. I will detune it a little when not messing around with it, and see how long it lasts. It is a kick in the rear! Remember this is using very LIGHT steel strings made for guitar but also that you are tuning a much shorter hence lower tension scale.
I AM NOT ADVOCATING STEEL STRINGS, JUST SAYING IT CAN BE DONE. I strung up a cheap Lanikai of mediocre but playable quality. I would NOT put steel strings on a uke I cared even a little bit about. A tiple yes.