Hi I am newby to bushcraft UK forum, but am a self confessed Expert on all things "Swedish Army mess kit" note I say mess kit & not trangia, it is true trangia were one of a number Who supplied burners for these kits hence they have become Known as S.A.T. stoves (Swedish Army Trangias) & to the naysayers I say "poppy cock", the only thing that makes these stoves rubbish is the user... (anybody that poo poos these wee stoves obviously has a lack of Knowledge & understanding on the intended use of these cleverly designed stoves.....) the design is by no manner of means just random, its like a puzzle when you know the design secrets, & used properly, the full potential of these wee stoves is revealed, they have a reputation for not being light but if weight is not an issue then all it takes is a little bit of understanding mixed with a dash of imagination & you have all the ingredients required for a versatile reliable & brilliant little field kitchen,
In answer to your Question The aluminium version used sensibly over a fire will not melt, these stoves have also have, quite rightly so, the reputation for being pretty much indestructible. I have both ally & SS versions I use mainly the ally version & I run Mine mainly on B&Q Bio ethanol & I personally have no issues with a lack of heat or painfully slow boil times, & I'm not talking about just boiling water for pot noodles (Gads) or reheating caned goods, but actually cooking from scratch raw fresh Ingredients Meat & Vegies. Meals like curries, pasta, rice, stews, home made soup etc fillings for wraps. From a furnace to a gentile chaffing setting , if you add a Tatonka simmer ring you can turn the heat right down for use as a double boiler for fondue or romantic chocolate covered strawberries the only limit is your own imagination, some say you can even use the wind shield with a small fire inside like a hobo stove, I personally would NOT recommend this as it draws the temper from the windshield making the metal very soft.
As a kid I missed out on the opportunity to be a member of scout troop and instead went off on on my tod on solo survival / adventure expeditions.
All that being said it's Horses for courses but IMHO I think these would be brilliant for a group of experienced scouts, & ideal for in experienced scouts to learn on, one set can easily be used to feed 3 maybe 4 Hungry scouts....