Re: What Is Alloy?

nick c <nchen711@xxxxxxxxxxxxx> wrote in
uF5Lj.4369$NM.3416@trnddc01:">news:uF5Lj.4369$NM.3416@trnddc01:

Agent Smith wrote:
nick c <nchen711@xxxxxxxxxxxxxxx> wrote in
IvXKj.17207$4O1.384@trnddc03:">news:IvXKj.17207$4O1.384@trnddc03:

Agent Smith wrote:
Does anybody know the name (or names) of the famous alloy from
which high- end racing components are made? :] Whenever I see it
referred to in books and articles, it is just called "alloy," but
apparently there's a whole branch of engineering that's embodied in
that single word, and writers gloss over the whole subject when
they say that.


Alloys are chosen or created with the intention to reliably fit the
function that engineers planned for in design. My guess is the word
alloy is used as representing a variety of alloys suitable for a
given design/application. Example: valves in a high performance
engine, be the valve stems hollow or solid, may be made from 6-4
titanium (heat treated to 160KSI), while domed piston heads may be
made from 6061 aluminum; piston head pins may be made from 7075
aluminum, assembled on connecting rods which may be forged from 6-6
titanium (heat treated to 180KSI). Various stainless steel and/or
titanium parts may be made from sintered stainless steel or
titanium, where loads are low, below the limits of sintered material
yield. Then there's ceramics ...... (shrug)

I supposed you've already done an Internet search? I'll guess again
and say if you've done a search, you may have found alloys having
proprietary designations.

Until you said "7075," I didn't have a keyword to search for, but I
googled it last night, and now I've got the details. I would have
thought that it was alloyed with nickel, but it turns out to be zinc.
Compared to steel, 20+ KSI yield stresses are pretty pathetic, but I
guess that it's sufficient for the loads a component is likely to
experience in bicycling. I wonder who Campagnolo's suppliers are,
for that stuff, and who forges it.

Nickel is not a good alloying agent with aluminum.

Do you know why? :]
.

Relevant Pages

  • Re: What Is Alloy?
    ... which high- end racing components are made? ... Alloys are chosen or created with the intention to reliably fit ... be forged from 6-6 titanium. ... stainless steel or titanium, where loads are low, below the limits ...
    (misc.news.internet.discuss)
  • Re: What Is Alloy?
    ... which high- end racing components are made? ... Alloys are chosen or created with the intention to reliably fit ... be made from 7075 aluminum, assembled on connecting rods which may ... be forged from 6-6 titanium. ...
    (misc.news.internet.discuss)
  • Re: What Is Alloy?
    ... high- end racing components are made? ... Alloys are chosen or created with the intention to reliably fit the ... on connecting rods which may be forged from 6-6 titanium (heat treated ... Various stainless steel and/or titanium parts may be made ...
    (misc.news.internet.discuss)
  • Re: The Cold Equations
    ... titanium, as there are dozens of such titanium alloys, each tailored to ... There's no excuse for the shuttle not having a composite covered ... Kurt Vonnegut would have to agree far beyond; WAR is WAR, ...
    (sci.space.shuttle)
  • Re: manifold(stainless steel)
    ... simply a variety of stainless steel. ... Calling Inconel a stainless steel is really stretching the imagination ... as Inconel alloys may have upto only 18% Fe in them. ...
    (uk.rec.cars.modifications)