Fwd: Stainless Steel Hardware

["Steve D'Gerolamo" <steved3@xxxxxxx>]

>Date: Thu, 20 May 1999 08:22:02 -0400
>To: 911/993/996 digest <911@domain.elided>
>From: Steve D'Gerolamo <steved3@domain.elided>
>Subject: Stainless Steel Hardware
>
>I still use stainless steel for exhaust and low stress applications.
Stainless fasteners do not have the high property class (tensile strength)
as carbon steel and should not be used for high load situations.
>
>Stainless, aluminum and titanium fasteners have a thin surface oxide that
acts as a lubricant between the mating nut and bolt.  With high loads, this
protective oxide wears away resulting in a material transfer called galling
which causes seizure between the fasteners (or couplings in plumbing
applications).  Your local industrial supplier can supply the proper thread
lubricants to be used and copper based anti-seize (such as Wurth
CU1400/CU800 or LubroMoly LM508) is available through many parts stores.
>
>We can also talk about Metabo thin slicer blades and other cut-off devices
to remove frozen exhaust hardware.  The points made about galling are
accurate and the issue must be addressed when using these types of
fasteners.  SD 
=========================================
Steve D'Gerolamo - The Ultimate Garage
201-262-0412 / steved3@domain.elided / http://www.ultimategarage.com

------------------------------