6061-T6 and T6511 have good corrosion resistance, is strong, and is probably what is in the hinges of nearly every KR out there. I certainly wouldn't go with the stronger 7075 or 2024 because you will have corrosion problems and probably won't find the right size extrusions in those alloys anyway, but I woudn't go with a weaker alloy either.
Brian Kraut Engineering Alternatives, Inc. www.engalt.com -----Original Message----- From: [email protected] [mailto:[email protected]]On Behalf Of Martindale Family Sent: Saturday, April 03, 2004 2:51 AM To: KRnet Subject: KR> Aluminium Folks I know very little about the current thread on aluminium but it seems to me from the figures quoted that tensile strengths in the tens of thousands of pounds per square inch for the various alloys/tempers may be of less importance in our applications than the tendency to fatigue or corrode. The former might be more related to extrusion fillet/radiuses and thickness and the latter to the application of various surface coatings eg., anodising/alclad. I might get shot down here but might it be more advisable to go with alloys of less strength but better fatigue and corrosion resistance. Is it really relevant if our elevator hinges or whatever are rated to 45 rather than 35,000 lbs/sq in.... both are strong enough for our application. Now diving for cover. John The Martindale Family 29 Jane Circuit TOORMINA NSW 2452 AUSTRALIA phone: 61 2 66584767 email: [email protected] _______________________________________ to UNsubscribe from KRnet, send a message to [email protected] please see other KRnet info at http://www.krnet.org/info.html
