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Is stiffness not the more relevant figure for bicycle frames? The higher end tubes can be drawn thinner and maintain the same stiffness and therefore are lighter at the cost of being more prone to dents etc
Tubes in a frame are pulled, compressed, twisted, all of which stiffness = better
PhilDAS-
Yeah the different steels are basically the same stiffness as a bulk material, but posh steel has higher yield strength and higher hardness, which means it can be formed into bigger diameter, thinner walled sections, which are stiffer than smaller diameter sections of the same wall thickness, while mitigating the risks of tube buckling and denting.
I think the chat about bulk material properties for steel Vs aluminium alloy Vs titanium Vs carbon etc is not very informative.
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The stiffness is eaxctly the same across the tubes (207Gpa).
The strength varies which does allow for thinner tube walls to save weight with better grades, but then the tube diameter has to be increased to get the stiffness back. My 953 track frame has 0.35mm walls in places and decently oversized tubes to make it very light and stiff but it will dent easily.
ie Wot @Cupcakes sed
Cupcakes
leggy_blonde
Nope, not enough for anyone riding a bike to notice. Reynolds list 207 GPa for all their steels from 520 up to 953
https://www.reynoldstechnology.biz/wp-content/uploads/2015/08/rtl_steel_alloys_extract.pdf