Reynolds 631 vs 4130 I really cant feel a difference in ride quality. Reynolds 725: 25CrMo4 Heat-Treated: 157 It's $200 more, but it is a higher quality Reynolds 631 frame, you can choose your crank arm and stem length, and it comes with a 1-1/8" headset. 4130 can be drawn to feel exactly the same as Reynolds 520 if it uses the same tubing profiles. I know their low end one is 520 and higher end is the 631. Butted and TIG weldable. The 4130 frame is probably the most appealing frame I have seen. Our Reynolds 520 series is normally a welded, cold-drawn version. That means that in terms of raw material properties it's no better than any other 4130 steel. 853 is still Reynold's best steel. First off you're confusing a couple of things. Reynolds 520 (note- all of the Reynolds tubing listed is butted): Reynold's version of the standard butted Cro-Mo, their entry level butted tube set; Reynolds 631: the next level up, air hardened, with higher strength and thinner wall thicknesses available; Reynolds 725: next level up, heat treated, with thinner wall thicknesses available Dec 26, 2007 · Thanks for all the answers guys. We recommend 631 or 525 forks for use with 525 road and touring frames. Soma is in the process of switching to Tange prestige for their main tubes. The joints. Straight gauge 4130 is readily available. The chemistry of air-hardening steels like our 853 and 631 means that not only are they stronger than typical chrome-alloy 4130 type steels, but after TIG or MIG welding, the heat-affected zone (HAZ) will be significantly stronger due to the grain structure formed on cooling in air. 531 is a diffenernt formula. Also, many alloys have more stringent temperature restrictions for brazing or welding. It feels like the 4130 tubes are thinner then the 520. they previously used Reynolds 631 for their main tubes. " 520 is Reynolds 4130. This tube range is heat-treated. It is 4130 steel (0. I think Reynolds add a metal (or some element) which actually "air hardens" the tubing when welded, where as straight 4130 softens and weakens under very hot (welding) tempratures. The big advantage of 4130 is that it's A. These handy 80 second ‘Tube Map’ videos provide an overview of the key differences between our ranges of tubing, as well as offering you some background knowledge about them. Hello all, I am looking into a steel gravel bike. May 16, 2009 · 501 is closest to 4130. Manganese-molydenum steel allow, about equal to reynolds 531, popular in the 1970s/early 80s. 725 can be TIG welded and can also be using in a “Designer Select” combination with Reynolds air hardened range of 853 and 631 tubing. They're just labeled and marketed by different bicycle tubing supplies, and drawn to different butt profiles, and offered in different heat treatments. 853, 531, etc. You do have to pay extra for brakes and pedals, though. Reynolds 631: Proprietary Air-Hardening : 115-130 KSI: 10% Min: This is the upgrade form the legendary “531” steel. In practice, there is little difference, and the main factor is the forming and butting of the tubing and the geometry that determines the quality of the end product. Jul 7, 2016 · We would like to show you a description here but the site won’t allow us. Why it works: UTS: 1080-1280 MPa, Mar 26, 2021 · Reynolds 631:This is the successor to the 531 tubing and provides a supple ride quality as well as an excellent fatigue life, making this a good material for an endurance bike. Reynolds I imagine, hold patents for their tubing, which is why no one else uses their designations. While reynolds is arguably the more boutique material of the two the truth is that the real difference between the two bikes you mention will come down to geometry and build (wheels especially). This material, originally introduced in 1935, was the tube which set the standard for i am buying a few different Soma frames (juice, groove, smoothie). Reynolds 725: 25CrMo4 Heat-Treated: 157-186 KSI: 10% Min: Using an industry standard steel alloy, Reynolds mandrel butt and then heat-treats this alloy. I have a columbus thron 4130 frame, and a 520 frame. I like the Jamis Renegade. Reynolds 753 – heat treated. Perfect for the long distance tourer or hard-tail MTB where ride feel and toughness matter. Reynolds 725: Chrome-moly steel, based on the industry standard 4130 steel alloy. Niner also makes a steel with 853. Reynolds 525: Also based on the 4130 steel. 30% carbon) and is made in Taiwan and lacks the heat treatment of Reynolds 735 (which has the same chemical composition). 4130 is more forgiving than most. Reynolds recommend 725 or 631 forks for use with 725 road and touring frames. Wabi Classic. 4130 is the type of steel alloy. [2] In 1897, the company patented the process for making butted tubes, [ 3 ] which are thicker at the ends than in the middle, this allowed frame builders to Apr 22, 2007 · Reynolds 853 IS a chromoly steel its just a different specific alloy than 4130. 4130 CroMo is too generic of a termit only specifies a type of steel, not the actually tube diameter, thickness, and butting. Apr 18, 2008 · My two current 4130 bikes are a pre-trek Bontrager race-lite (ss) and the inbred (29er ss). The Reynolds Tube Company was founded in 1898 by John Reynolds in Birmingham, England, [1] but traces its origins back to 1841 when John Reynolds set up a company manufacturing nails. Apr 22, 2007 · Reynolds 853 IS a chromoly steel its just a different specific alloy than 4130. Now go to the most common, quality cycletube steel which is 4130 Cr-Mo*** – this has almost identical properties as the old Reynolds 531 and is what Reynolds 525 and 520 is made of, it's also almost certainly what any quality bike manufacturer uses for their own-brand or generic Cr-Mo tubing - This gives a typical UTS of 1110 MPa and a Yield Apr 14, 2009 · Also, 1/2 cost 4130 bike usually aren't manipulated for ride characteristics quite a smuch as high dollar reynolds bikes. 725 can be TIG welded and can also be using in a ìDesigner Selectî combination with Reynolds air hardened range of 853 and 631 tubing Reynolds 525 25CrMo4 114 KSI 10% Mandrel butted for The decal will clarify the tubes used by each builder. i think they use chromo 4130 ?? on the rear triangle for both the older Reynolds and the newer Tange frames. Tange MTB and Infinity… 4130 Chromoly steel, double butted for. How much of a difference does this make if feel and ride quality? I know the higher end stuff is slightly lighter, but what about feel? Thanks Aug 3, 2003 · lengths that are most oft used in bents. Reynolds also use the 520 decal for Reynolds chrome-moly tubing made under license to our specification Reynolds 531 - cold drawn. Cheaper and B. While 4130 is a generic categorization of steel meeting a certain range of alloy requirements, 631 is a specific formulation and process to Reynolds. Both of which ride nice. My MTB has a 631 frame and its lateral stiffness at the bottom bracket is quite poor, but I have to say it is a heck of a lot of fun to ride and it just eats up the bumps. Reynolds 631 is a progression of the classic 531. The strength has gone up 10% allowing weight savings on tough, durable but comfortable frames. So if you want to go around the world to Mongolia 4130 is probably the best bet. May 25, 2006 · I'm having a builder rustle me up a new 'retro' frame and he's got a bunch of old pipes. Reynolds 853 is recommended to be used with lugged construction silver brazed methods. Easily welded and repaired. Reynolds 525: 25CrMo4: 114 KSI: 10% Min Reynolds 631: is the cold-drawn version of the 853, with similar air-hardening advantages in the weld zone. are Reynolds' designations for specific tube sets-all of which are made from 4130 steel. It can provide a Nov 6, 2007 · Reynolds 725 25CrMo4 Heat Treated 157-186 KSI 10% min Using an industry standard steel alloy, Reynolds mandrel butt and then heat-treats this alloy. Great write up evil. So is Reynolds 631. True Temper OX Gold and Platinum is the same alloy. . 853 is amazing steel but cannot be fixed easily in the event of denting. In reality, it doesn't feel much different to 520. 725 can be TIG welded and used within our "Designer Select" combinations including 853 and 631 tubes. Reynolds 631 tubing is lighter and stronger than 4130 CrMo tubing. Other 4130 tubesets may or may not be Dec 15, 2009 · The difference is that 520 is Asian produced tubing made to Reynolds specifications. My buddy has one, I've ridden it, and it's fantastic. Reynolds 520 and 525 Jan 24, 2018 · From 631 to 953, there’s a wide variety of Reynolds tubes available, so we’ve created our very own Reynolds tubing guide for you in the form of a short video series. I'm torn between Reynolds 753 and Columbus SLX, but there are also other options as follows; Reynolds: 531, 631, 753, 531 Super Tourist Columbus: SL, SLX, Cromor, Hexagonal, Starshape, Air with seat-post And when get to fork I can consider; On road and touring frames we suggest 631 or 525 forks be used in conjunction with 631 frames. That said, never ridden either, owned a whole BUNCH of steel rides, of both regular cromo (surlys, for example) and the refined 853 reynolds (my OLD norco rampage was an 853 reynolds bike). As 631 is only available in main frame tube sizes, we recommend the use of either heat treated CrMo (725) or cold drawn CrMo (525) seatstays and chainstays to complete the frame. Reynolds 520 bicycle tube sets are mandrel butted for weight reduction. two of the frames are mtb and one is a (Reynolds) 631 steel is slightly stronger than (AISI) 4130 steel, which means that theoretically tubing made from 631 can be thinner than 4130 to save some weight. It's $750, but it is Reynolds 725 steel, and has more customization options Using an industry standard alloy with mechanical properties similar to our famous 753 brand, Reynolds mandrel butt and heat-treat this alloy so that thinner walls can be used compared to non-heat-treated steels. Mar 10, 2023 · 853 has a higher strength to weight ratio, has better fatigue strength and stiffness (about 30% greater than 4130).
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