Well, it will not be pure Scandium, just some added in to a mix for an Aluminium alloy. Aluminium alloys are generally a pig to weld, and the alloys that can be welded easily aren't all that strong. Add a little Scandium to the alloy though, and as if by majyk, you get a strong alloy that can be welded.zoolander said:Anybody ever heard of a frame material of Scandium?
Someone i know has a Rocky Mountain road bike for sale and the frame is supposedly made of this.
not quite. It's stronger than aluminum, and is also lighter, however I believe it's supposed to have ride characteristics of aluminum. Fairly popular material for Lacrosse shafts.zoolander said:so basically it is an alum framed bike?
Salsa uses this in some of their frames like the Campeon, which I have heard good things about. I don't own one, so I can't say first hand what it's like. Here's their blurb:zoolander said:have you guys ever seen many bikes made of this material?What brands?Is it supposed to be any good?
Yes.zoolander said:have you guys ever seen many bikes made of this material?What brands?Is it supposed to be any good?
Scandium used to be a big marketing deal when it was new maybe 10 years ago. AFAIK, it's a 7005-series aluminum. Scandium is an alloying element added in very small % amounts to the aluminum to improve grain structure and ability to withstand heat of welding. All 7005 series aluminum contains alloying elements like these to improve grain structure; these are responsible for the improved strength and fatigue life. IIRC, standard elements are Mg, Mn, Cu....you can google "7005 aluminum" and read up on the specs.zoolander said:Scotty...i tried google and the only thing i could find on the bike brand im looking at(used) was for mtn bikes,not a road bike
dhk2 said:Scandium used to be a big marketing deal when it was new maybe 10 years ago. AFAIK, it's a 7005-series aluminum. Scandium is an alloying element added in very small % amounts to the aluminum to improve grain structure and ability to withstand heat of welding. All 7005 series aluminum contains alloying elements like these to improve grain structure; these are responsible for the improved strength and fatigue life. IIRC, standard elements are Mg, Mn, Cu....you can google "7005 aluminum" and read up on the specs.
In theory, scandium aluminum may have a slight strength improvement over standard 7005 aluminum, so in theory a framebuilder could use thinner/lighter-walled tubing with equivalent strength and fatigue-life. IMO, it's more important to get the tube dimensions and wall thickness (eg frame weight) appropriate to your riding and goals than to be concerned about the micro-alloying elements the tubing contains.
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