Comments by "" (@tomk3732) on "carwow"
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@mosconi0359 LOL, you are not really knowing how we measure metals - we have tensile strength, we have hardness, ductility, and then we have some additional properties such as whatever alloy is magnetic, whatever it is weldable (and if not weldable with standard stuff what can be used), if it work hardens, machinability index, resistance to corrosion, strength loss due to heat, ability to heat treat, plastic deformation and I am sure many others.
This is why we have 1000s of alloys. A lot. Most bodies of cars and trucks are made with high use of mild steel - which is usually something like 1018. BUT, many manufacturers started using different alloys - alloys that offer more tensile strength can be used in truck frame to simply make it lighter. Some parts of cars and trucks use a lot of composite materials to save on weight.
As to your spaceship - if the goal was to make it stronger - which I am assuming tensile strength, then SS would not be used as there are far better alloys for this that are cheaper. Heck something like 4330 steel. Again, I am 99% sure SS was used for heat as other than Titanium (expensive) it is better than any other alloy at dealing with heat.
Even high carbon mild steel is "stronger" then some of the strongest SS. SS is not very "strong" at all.
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