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Differences between Reynolds 501 and 531 steel?(5 posts)

Differences between Reynolds 501 and 531 steel?mattcrout
Apr 10, 2003 9:30 AM
I'm looking at a early 80's 501 bike, but seems like most people have a 531. what's the difference? if it's weight, how much heavier (it's for a Singlespeed so i'm not that concerned) Thanks!
re: Differences between Reynolds 501 and 531 steel?Mel Erickson
Apr 10, 2003 9:57 AM
I believe 501 is a straight guage (not butted) seamless chromoly tubing used for the main triangle of lower priced, mass produced bikes. 531 is manganese moly, butted and the flagship of Reynolds tubing for many years. Superceded by 853 as the top of the line Reynolds tubing now.
501 tubes have a seam, 531 is seamless. nmbicyclerepairman
Apr 10, 2003 1:10 PM
That's how I remember it (nm)brider
Apr 10, 2003 1:50 PM
..
Basically weightgeeker
Apr 10, 2003 10:12 AM
I googled and found some tubeset specs at

http://www.desperadocycles.com/The_Lowdown_On_Tubing/Tubing_Properties_For_Non_True_Temper_Tubing.htm

Both are double-butted in main tubes, but 531 is generally thinner and lighter. Quoted tubeset weight of 2300g for 501, 1900-2200g for 531 (there are several types).