[TheForge] Heat Treating 5160 was Welding 5160
Ralph Sproul
[email protected]
Tue Aug 26 22:59:07 2003
Dave, Thanks for mentioning:
"52100 is the most common ball bearing steel -- so if you are going
to mess
> with junk bearings that is good information. (Many roller bearings --
> almost 100 % of Timken's are case hardened and not 52100, still very
useful
> for things if using junk bearings. The steel is close to 4120 before case
> hardening. It is a very very clean steel.)
I've used the tapered rollers, balls, and barrel shaped bearings
under the press to make power hammer tools, and have noticed that some are
not what I expected. I had talked to a retired engineer from Fafnir and he
was telling me how all those bearings were all 52100. It appears Timken is
different.
It is nice to know more about what these "softer" bearings after
being forged are.
Ralph
----- Original Message -----
From: "David E. Smucker" <[email protected]>
To: <[email protected]>
Sent: Tuesday, August 26, 2003 9:17 PM
Subject: Re: [TheForge] Heat Treating 5160 was Welding 5160
> Ed,
>
> You should include W1 or 1095 (same thing) in you list of tools steels,
> since it will meet 90 % of blacksmithing needs.
>
> Also I would include A2, because you are starting to see the material out
> there as machine shops like it for small tools, punches etc.
>
> 4340 because you will find that in uses similar to 4140
>
> Also 8620, if you want to do case hardening.
>
> 52100 is the most common ball bearing steel -- so if you are going to mess
> with junk bearings that is good information. (Many roller bearings --
> almost 100 % of Timken's are case hardened and not 52100, still very
useful
> for things if using junk bearings. The steel is close to 4120 before case
> hardening. It is a very very clean steel.)
>
> And last but not least I would include 1080 because that is "about" want
> most railroad rail is -- another good junk yard steel.
>
> Dave Smucker
>
>
> ----- Original Message -----
> From: "Ed F" <[email protected]>
> To: <[email protected]>
> Sent: Tuesday, August 26, 2003 8:48 PM
> Subject: Re: [TheForge] Heat Treating 5160 was Welding 5160
>
>
> > Hi Chuck,
> > Lucky me, the friendly instructor at the nondestructive testing
department
> > at the local Vo-tech lent me a copy.
> >
> > If anyone needs some information on a specific alloy, let me know soon I
> > have to return it. And if you don't mind, let me know what tool steels
> you
> > guys like best so I can make a copy of that info. before it's gone.
> >
> > Thanks,
> >
> > Ed
> >
> > P.S. I'm already planning on getting O1, S1, S7, H13, 5160 & 4140
> >
> >
> > ----- Original Message -----
> > From: "Chuck Robinson" <[email protected]>
> > To: <[email protected]>
> > Sent: Tuesday, August 26, 2003 11:39 AM
> > Subject: Re: [TheForge] Heat Treating 5160 was Welding 5160
> >
> >
> > > Hey Dave,
> > > Bill's book is good, but the bible is the "HEAT TREATERS GUIDE"
> published
> > by
> > > ASM.
> > > Regards,
> > > Chuck
> > > ----- Original Message -----
> > > From: "David E. Smucker" <[email protected]>
> > > To: <[email protected]>
> > > Sent: Tuesday, August 26, 2003 8:22 AM
> > > Subject: Re: [TheForge] Heat Treating 5160 was Welding 5160
> > >
> > >
> > > > Grant, Thank you for the reply and the time you put into writing
it.
> > > Very
> > > > helpful in the learning process. I had missed the point of mass, as
a
> > > > factor in transformation time.
> > > >
> > > > For the record Bill Bryson's book is Heat Treatment, Selection and
> > > > Application of Tool Steels.
> > > >
> > > > Again thanks, take care and work safe,
> > > >
> > > > Dave Smucker
> > > >
> > > >
> > > > ----- Original Message -----
> > > > From: "gblacksmith" <[email protected]>
> > > > To: <[email protected]>
> > > > Sent: Tuesday, August 26, 2003 3:28 AM
> > > > Subject: Re: [TheForge] Heat Treating 5160 was Welding 5160
> > > >
> > > >
> > > > > Interested parties: Transformation time from pearlite and ferrite
> to
> > > > > austenite is a function of the mass of the piece, rather than its
> > > > alloying,
> > > > > assuming critical temp is reached. When critical temp is reached,
> the
> > > > > transformation begins in earnest. Why? the mass is the key, as
> the
> > > more
> > > > > thickness of material you transform, the longer it takes, just
like
> > > > melting
> > > > > butter. Which would take longer at a given melting temp, a pat or
a
> > > whole
> > > > > stick? My observations do not conform to the data attributed to
Mr.
> > > > Bryson.
> > > > > I have not been able to get even very thin w-1 knife blades to
fully
> > > > harden
> > > > > in five minutes at critical, as measured by pyrometer, using oil
> > quench.
> > > > >
> > > > SNIP no need to repeat all of this.
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