Re: [CR]REYNOLDS 753 metallurgy


Example: Events:Cirque du Cyclisme:2004

From: "Amir Avitzur" <avitzur@013.net.il>
To: "Joe Bender-Zanoni" <joebz@optonline.net>, "WD Baseley" <wdb@pobox.com>, <classicrendezvous@bikelist.org>
References: <5.1.1.6.2.20040405081535.01bc9eb8@pop.mindspring.com> <006601c41b85$80864520$6400a8c0@jfbender>
Subject: Re: [CR]REYNOLDS 753 metallurgy
Date: Mon, 5 Apr 2004 21:59:18 +0200


Joe, That's not a good idea. Flattening the sample "works" the material and will change its hardness. I suggest machining a bar the same diameter as the inside of the tube and mounting the sample on it for the hardness test. That aughta give a good reading.

Yours in metallurgy,
Amir Avitzur
Ramat-Gan, Israel


----- Original Message -----
From: "Joe Bender-Zanoni"
To: "WD Baseley" ;
Sent: Tuesday, April 06, 2004 5:16 AM
Subject: Re: [CR]REYNOLDS 753



> Since the 753 is heat treated, a hardness test away from the heat affected
> zone (the immediate area of the joints) would work.
>
> Just cut a sample out of the center of your tube, flatten it and do the ol
> Rockwell hardness test.
>
> For enquiring minds that really want to know.
>
> Joe Bender-Zanoni
> Great Notch, NJ
>
>
> ----- Original Message -----
> From: "WD Baseley" <wdb@pobox.com>
> To: <classicrendezvous@bikelist.org>
> Sent: Monday, April 05, 2004 8:19 AM
> Subject: Re: [CR]REYNOLDS 753
>
>
> > At 12:10 AM 4/5/2004 -0400, Philcycles@aol.com ushered forth:
> >
> > >In a message dated 4/4/04 7:56:43 PM, youngc@netreach.net writes:
> > >
> > > >You could collect some shavings of the metal and have it analyzed to
> know
> > > >what alloying materials are there and in what proportions. You'd
> probably
> > > >need to do the same with a known sample of 753 and some other steels
> for
> > > >comparison purposes. No doubt a frightfully expensive proposition
> unless
> > > >you
> > > >know of a graduate student in metallurgy with some time on their hands
> > > >and
> > > >ready access to some pretty fancy analytical equipment.
> > >
> > >Wouldn't work. 753 is heat treated 531.
> >
> > Metallurgical analysis should still work, but you'd probably have to look
> > at other properties besides material composition, such as grain structure.
> >
> > Regards,
> > Dave "former computer geek in a metallurgical lab" Baseley