Re: Forged vs. ?


"Mike Jacoubowsky" <mikej1@xxxxxxxxxxxxx> wrote in message
news:MYRJi.551$yc5.24@xxxxxxxxxxxxxxxxxxxxxxx
That said, many items are forged, but don't say that they are. I would
think that just about all the stems you will meet would be forged, but
I
am sure that there are exceptions if they are particularly old.

I'm not a metallurgist (nor do I play one on the 'net), but back in the
day,
we had "forged" and "melt-forged" stems, the "melt-forged" versions
being
less-expensive and, according to SR and Shimano, were forgings done at
higher temperatures and not as strong as a lower-temp (room temp?)
forging.
I never looked into it beyond such claims; others here will know if this
is
actually true or not.

--Mike-- Chain Reaction Bicycles
www.ChainReactionBicycles.com


"Melt forged" was/is a BS term for injection molding, a method for making
high quality castings. The first time I saw the term used was on the
Sugino Maxi cranks that had the chainrings swaged onto the crank arm.

A casting is still a casting and doesn't have the benefits of increased
metal density that comes from forging.

Chas.


.

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