What is stretch twill fabric?
Unless you are an all star pro, a steel bike will suit you fineThing is, the difference in weight is so small that unless you are racing people in multi-national competitions, it's just a lot of extra money you could put into buying a REALLY nice steel frameDon't let ads fool you, steel are just as good as aluminum.
It depends on the type of riding you doIf you ride long distance you don't want aluminum, it is very stiff and will wear out your body with jolts from the roadSteel provides some degree of flex, which softens road joltsYou might want to go to a bike shop and hold a steel bike and alum bike so you can appreciate the difference in weightAnother thing about alum bikes is they do suffer from metal fatigue, so they will not last for 20 years like a steel bike (perhaps even much less depending on usage).
West It is all about the ride that both frames offerBoth frames are durableThere is a slight weight differenceBut both are excellent frame materialsSteel is amore forgiving and strong materialIt clearly provides the best overall ride characteristicsAluminum is lighter, not quite as durable, but does not rustIt's ride is far harder than steelTo many it is far to harsh to ride distances onI have owned multiple steel and aluminum framesI liked them boththey never impacted me on distance ridesI loved the steel bikes rideI like the look and stiffness of the aluminum framesI would probably choose an aluminum frame over steel Soccerref
Steel is better for road bikes and touring bikes, while aluminum is better for race bikes because its lighter Steel will rust, so if you have a bike where it rains a lot or you ride in the winter, you need to apply a coat of Frame Saver every year to keep the inside of the frame rust-free.
