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Posted by RoyJ on May 5, 2008, 10:15 am
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The page you mentioned showed tempering temps from 700 to 1300F, quite a
range. Take a look at the various tempering temps on these links
http://www.matweb.com/search/QuickText.aspx?SearchText=1095
What you are looking for is a plot of RC and Kpsi against ductility.
Straight from the oil bath is 46 RC and extremely brittle. Temper at
700F will relieve the stresses, not much else. Here's the range you want
to look at:
900F 39 RC 176 kpsi 10% elongation (ductility) pretty brittle!
1000F 35 RC 160kpsi 13% elongation
1100F 28 RC 140kpsi 17% elongation (getting softer)
Sounds like you want something right around 1000F
I had a good chart of the oxide colors, it disappeared.Next best
http://www.tpub.com/content/construction/14250/css/14250_34.htm
and here is the red heat chart
http://www.beautifuliron.com/usingthe.htm
1000F will be the very dark blue but not getting close to glowing red.
Karl Townsend wrote:
> I'm making a couple small leaf springs. After a bit of searching, I've
> settled on 1095 steel for my project. It needs to be heat treated for spring
> properties, but I'm not finding info on tempering. The best page I've found
> has a HUGE range for tempering.
> http://www.suppliersonline.com/propertypages/1095.asp
>
> Does anyone have information for a procedure to treat this for best spring
> properties?
>
> Karl
>
>
>
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Posted by BillM on May 5, 2008, 10:57 am
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"> Does anyone have information for a procedure
to treat this for best spring
> properties?
Karl, Do you need some material? I've got a
bit of C1075 that I used to make a
few thousand greenhouse clips out of last year.
It's .045 (I think) by 1/2" wide.
Got it from Mead Metals. Here is a link to
their heat treat chart--at the bottom of the
page.
http://www.meadmetals.com/annealedspringsteel.htm
Bill
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Posted by Ned Simmons on May 5, 2008, 11:24 am
Please log in for more thread options On Sun, 4 May 2008 21:39:44 -0500, "Karl Townsend"
>I'm making a couple small leaf springs. After a bit of searching, I've
>settled on 1095 steel for my project. It needs to be heat treated for spring
>properties, but I'm not finding info on tempering. The best page I've found
>has a HUGE range for tempering.
>http://www.suppliersonline.com/propertypages/1095.asp
>
>Does anyone have information for a procedure to treat this for best spring
>properties?
>
>Karl
>
>
The ideal temper will depend on the stress and the number of cycles
the spring will experience. If the stress is relatively low, less than
90,000 psi, then tempering around 950F would give maximum life. The
700F temper would be appropriate if stresses are higher and shorter
life is acceptable.
I don't have any straightforward data on time, but 1/2 to 1 hour for a
small part would probably be safe.
--
Ned Simmons
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Posted by Karl Townsend on May 5, 2008, 1:50 pm
Please log in for more thread options Thanks, everybody
I'll heat 1475, quench in oil, temper at 950.
Karl
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> settled on 1095 steel for my project. It needs to be heat treated for spring
> properties, but I'm not finding info on tempering. The best page I've found
> has a HUGE range for tempering.
> http://www.suppliersonline.com/propertypages/1095.asp
>
> Does anyone have information for a procedure to treat this for best spring
> properties?
>
> Karl
>
>
>