It ain't no chromoly. From that inexorable arbiter, Wiki: *Reynolds 531* (pronounced 'five-three-one') is a brand name <http://en.wikipedia.org/wiki/Brand_name>, registered to Reynolds Cycle Technology <http://en.wikipedia.org/wiki/Reynolds_Cycle_Technology> of Birmingham <http://en.wikipedia.org/wiki/Birmingham>in the United Kingdom, for a manganese–molybdenum, medium-carbon steel bicycle tubing.
Introduced in 1935 and for many years at the forefront of alloy steel <http://en.wikipedia.org/wiki/Alloy_steel> tubing technology, 531 tubing has been superseded by more complex alloys and heat-treatment/cold work cycles as Reynolds continues to compete with other manufacturers of steel for the bicycle industry.[1] <http://en.wikipedia.org/wiki/Reynolds_531#cite_note-REN-1> The approximate alloying composition of 531 tubing is 1.5% Mn <http://en.wikipedia.org/wiki/Manganese>, 0.25% Mo <http://en.wikipedia.org/wiki/Molybdenum>, 0.35% C <http://en.wikipedia.org/wiki/Carbon>, and is similar to the old British BS970 En 16/18 steel (EN 16 is similar to grade BS970 <http://en.wikipedia.org/wiki/Steel_grades> 605M36). Its mechanical properties and response to heat treatment are broadly similar to the AISI 4130 <http://en.wikipedia.org/wiki/AISI_steel_grades> standard alloy steel, also used for bicycle frames, motorcycles, as well as aviation and motor-sport.[1] <http://en.wikipedia.org/wiki/Reynolds_531#cite_note-REN-1> This material was used to form the front subframes on the Jaguar E-Type <http://en.wikipedia.org/wiki/Jaguar_E-Type> of the 1960s.[2] <http://en.wikipedia.org/wiki/Reynolds_531#cite_note-2> The properties of 531 are very close to those of 4130 steel, though, from what I read. My question: what exactly is/was 531 "C", and where did it stand in the lineup from thinnest to thickest walled? My 1989 Falcon was made from this, as was that very briefly owned (the steerer cracked just above the crown) Orbit tandem. I *know* it was very light for a tandem! -- can you say "wag the dog"? On Thu, Jun 19, 2014 at 12:42 PM, Ron Mc <[email protected]> wrote: > ok Steve, I was wrong and your're wrong-headed, what the hell. In the US > we call that C-Mo steel and don't think too much of its properties. > Managese steel is a different animal, we make car crushing hammers out of > it. > > > On Th > -- Resumes, LinkedIn profiles, and letters that get interviews. By-the-hour resume and LinkedIn coaching. Other professional writing services. http://www.resumespecialties.com/ Patrick Moore Albuquerque, Nouvelle Mexique, Etats Unis ************************************* * "Where you come from is gone, where you thought you were going to never was there, and where you are is no good unless you can get away from it. Where is there a place for you to be? No place.* * "Nothing outside you can give you any place," he said. "You needn't to look at the sky because it's not going to open up and show no place behind it. You needn't to search for any hole in the ground to look through into somewhere else. You can't go neither forwards nor backwards into your daddy's time nor your children's if you have them. In yourself right now is all the place you've got. If there was any Fall, look there, if there was any Redemption, look there, and if you expect any Judgment, look there, because they all three will have to be in your time and your body and where in your time and your body can they be?* * "Where in your time and your body has Jesus redeemed you?" he cried. "Show me where because I don't see the place. If there was a place where Jesus had redeemed you that would be the place for you to be, but which of you can find it?” -- Flannery O'Connor, Wise Blood * -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
