How would th=
e "wire" actually be setup or configured physically in the
"standard" L=
ehman. Ed.
-----=0A Original Message -----
=
From: "Brett Nordgren" <
brett3nt@.............&g=
t;
To: <
psn-l@..............>
Sent: Sun=
day, June 06, 2010 11:03 AM
Subject: Re: Wire Strength
> G=
eoff,
>
> Try
http://www.smallparts.com/ &=
nbsp; and search for "17-7 PH Spring Wire"
>
> As sold, in=
"Condition C" it has a yield strength of over 190,000 psi
> and if y=
ou want to bake it for an hour at 900 F you can raise that to
> 260,0=
00, and it will possibly get even higher than that. The 17-7
> =
material we use for leaf springs gets a yield strength close to
> 300=
,000 psi after baking.
>
> The material property you want to be=
=0A looking at is yield
> strength. As defined by AK Steel
&=
gt; corp.
>
http://www.aksteel.com/pdf/markets_products/stainless/precipitation/1=
7-7_PH_Data_Sheet.pdf> it is the stress level at which the mater=
ial will permanently stretch
> by 0.2%. You could stress a wire=
to half that value reasonably safely.
> In some places yield stess i=
s defined at 2% or even 5% permanent
> stretch, so you should be awar=
e of which one is being used. In any
> case, working at 40-50% =
of yield is likely to be OK.
>
> Brett
>
>
> =
At 02:30 AM 6/6/2010, you wrote:
>>Does anyone understand wire str=
ength ?
>>
>>I will look at this way.
>>
>=
>HY80 steel has the ability to stand up to
>>80,000 lb/in^2 so
you just=0A translate
>>say the area of a given steel wire
>=
;>what it would be if whatever weight
>>was on that area as tra=
nslated to
>>the area of the wire guage then if it is
>>l=
ike 1/2 the yield strength 40,000 lb/in^2 you should be ok ??
>>
>>5 lb on a 28GA wire might translate to
>>Diameter =3D>=
; 2*SQR(weight/(PI * 40000))
>>Where HY80 type steel is the wire s=
teel ?
>>Maybe 28 or less AWG steel wire. (you need an AWG table)<=
br>>>
>>If it were piano wire it might be HY160
>>o=
r something better than plain steel ?
>>
>>IS there such =
a thing as stainless steel wire
>>or something that will not corro=
de/rust ?
>>
>>Does any of that sound right ?
>>=
>>I think like a LAYMAN and not Lehman :-)
>>
>>=
;Thanks ahead of time,
>>geoff
>
>
>=0A ________=
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