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Home > Forums > Materials Engineers > Activities > Material engineering other topics Forum

ASTM A439 D5 CTE

thread367-325128
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timk (Mechanical)
3 Jul 12 11:50
Hello,
We have specified D5 for a component in a screw pump we have developed. It was selected primarily for the low CTE and corrosion resistance. My questions is 2 fold.. I have not found any source for the “published” CTE of the D5. What should it be (at around 450 F)? and what kind of CTE variation should I expect to see from pour to pour on this material (assuming the chemical and heat treat are all controlled well)?

Thanks
Goahead (Aerospace)
5 Jul 12 12:21
Hello,
you may find partial answer to your questions (Tables at page 25) in the leaflet (40 pages) on
Ni-Resist and Ductile Ni-Resist Alloys at

http://www.nickelinstitute.org/~/Media/Files/Techn...

http://www.welding-advisers.com/

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