alloy with low coefficient of thermal expansion 1

[lidbasky]

Did anybody heard something about alloy inconel 3501. A special Fe-Ni-Co alloy with low coefficient of thermal expansion?

 

[berkshire]

Have you checked with INCO incorporated?
B.E.

The good engineer does not need to memorize every formula; he just needs to know where he can find them when he needs them. Old professor

 

[lidbasky]

No, i dont do that. i googled for a long time but i didnt find anything.

 

[lidbasky]

i check inco, i cant find In 3501,but i found Nilo k alloy which is an Fe-Ni-Co alloy, and has low thermal expansion. but my alloy has so many alloying elemnts which make production of it difficult. could anyone help me or give me some information about these alloys?

 

[israelkk]

Invar/Covar has a coefficient of thermal expansion of a glass.

 

[IRstuff]

I've usually seen it spelled as Kovar, but my experience is that Invar and Kovar were considered to be the least expansive of the typical metals.

TTFN
faq731-376

 

[EdStainless]

The there is 901, 902, 903 with CTE that match various specific materials (glasses or ceramics).
With all of these alloys they only have the desired CTE over a limited temp range. So be careful.
Invar (Fe 36% Ni) have the lowest practical CTE, but it is not corrosion resistant and it does not handle high temp.
We make cryo pipe in it a lot.

= = = = = = = = = = = = = = = = = = = =
Plymouth Tube