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I need info on steel!(7 posts)

I need info on steel!mattcrout
Mar 25, 2003 4:26 PM
Can somebody discribe to me all the different grades of steel? (853, Renolds, etc....) What is the difference between them? what makes one better then the other? please help me out! thanks! has a chartrufus
Mar 25, 2003 4:30 PM
that shows the available steels from each manufacturer and their relative characteristics.
try this one tooterry b
Mar 25, 2003 4:42 PM
oops - click on the trademark icons (nm)terry b
Mar 25, 2003 4:43 PM
And another...shmoo
Mar 25, 2003 6:54 PM

Take the "/articles/steel" out of the address and see the rest of Steve Rex's site.

Why different tubes exist...Alexx
Mar 26, 2003 5:37 AM
Aside from the fact that better tubing is butted, the differences in, say, one type of Reynolds brand tubing to another have a good bit to do with how the frame is constructed.
Back in the days of lugs and brazing, there was no real problem with the tubing becoming affected by the heat of manufacture. 531 was one of the favored tubesets back then. That changed when MiG and TiG welding of frames became common, since the metal characteristics were altered at the weld site due to the tremendous heat from welding.
Some tube materials today are strongest when the entire frame is heat annealed after welding (held at, say, 400 in an oven for a few hours, then cooled slowly..), others are at their strongest when cooled in the air straight after welding. A tube material that works well for one won't work well for the other...
Mar 26, 2003 8:24 AM
In an effort to keep up with consumers desire for lightweight frames, the tubing manufacuters have developed ever thinner tubesets. These large diameter, thin wall tubesets would not be technically possible without a higher strength of metal than that used previously. So new high strength alloys allow tubing mfgers to make the tubes ever thinner, which leads to light weight frames, which leads to more frame sales, which leads to higher tubing sales.

And while these newer alloys do stand up the heat of TIG better than the older alloys, there is no real problem with TIG'ing the older tubesets; there is more than enough metal in the weld area to build a properly strong frame.