Does anyone have a link to the RBW Silver Tubing sticker which gives the mechanical properties of the tubing. I seem to recall 110 ksi UTS. I looked on the RBW site and searched but came up empty.
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Hi John,I assume the UTS is ultimate tension strength or stress. I would think the bicycle builder or framer would want it to be less than 70ksi (yield strength limit). Once stress exceed the yield strength, it will basically begin to fail due to buckling or plastic hinge effects happen on the frame. Deformation in the steel is plastic instead of elastic once it exceeds yield.
On Mon, Sep 18, 2017 at 6:23 PM, John Hawrylak <John.H...@verizon.net> wrote:
Yes, RBW claims it is heat treated, but the UTS is very close to True Temper Versus (110,000 psi) so the heat treatment is probably for stress relief instead of increasing the UTSJohn HawrylakWoodstown NJ
On Sunday, September 17, 2017 at 10:36:16 PM UTC-4, Benz, Sunnyvale, CA wrote:
On Sunday, September 17, 2017 at 1:01:21 PM UTC-7, John Hawrylak wrote:Does anyone have a link to the RBW Silver Tubing sticker which gives the mechanical properties of the tubing. I seem to recall 110 ksi UTS. I looked on the RBW site and searched but came up empty.It's here, in the announcement for Le S!lver crank.Basically, it says:
- S!lver butted Cr-Mo steel tubes, forks, stays
- Fe 97.3%
- Cr 1%
- Mo 0.2%
- C+Mn+Si+S 1.5%
- UTS ~103,000 psi
- Elongation ~10%
- Yield ~70,000 psi
Kind of in the same ballpark as the evergreen Reynolds 531.
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Steel is definitely one of the overlooked innovations that was necessary to feed the industrial age and what made America great! Oops , I meant really good. I think it was a bridge over the Mississippi and then the Brooklin bridge followed by the golden gate that drove the real innovation s in steel production.
Obsessing can be fun, but can also be unhealthy. Just ride!
Scott