coil spring material
coil spring material
(OP)
Reverse engineering a coil spring for an aerospace application.
Mat'l report came back with the following % by weight;
Fe-49
Ni-44.83
Mo-3
Ti-2
Al-1
Cu-0.12
Mn-.10
C-0.02
Si-0.02
Any specific reason for the addition of Ti, Al?
I haven't found a material vendor that can identify the material.
Any help Mat'l I.D or with vendors that deal with special materials would be appreciated.
Mat'l report came back with the following % by weight;
Fe-49
Ni-44.83
Mo-3
Ti-2
Al-1
Cu-0.12
Mn-.10
C-0.02
Si-0.02
Any specific reason for the addition of Ti, Al?
I haven't found a material vendor that can identify the material.
Any help Mat'l I.D or with vendors that deal with special materials would be appreciated.





RE: coil spring material
It is not simple to reverse engineer a spring even if you have the correct material. You can not just make a spring with identical dimensions. You have to know what metallurgical and mechanical processes the spring had. It may had a preset at room temperature or other temperature etc. You should calculate the stresses, fatigue cycle etc., and know the working conditions to successfully reverse engineer the spring.
http://israelkk.googlepages.com/home
RE: coil spring material
This is for a US based supplier to a US based aircraft company.
I am leaning towards having a second analysis done at another lab to confirm the material composition as none of the spring material vendors I have contacted are familiar with the material.
RE: coil spring material
Regards,
Cory
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
RE: coil spring material
Are you aware of a material that has a similar chemistry?
RE: coil spring material
http://www.matweb.com/search/SearchComp.asp
Regards,
Cory
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
RE: coil spring material
Make sure that there is not a nickel coating on the wire that is compromising the analysis. Nickel coating is frequently used to act as a lubricant/reduce friction on stainless steel and other spring wires during the coiling process. What is the wire size? Do you know exactly how the analysis was performed, meaning how the sample was probed, what analytical method/equipment was used, etc.? This may be helpful for choosing a 2nd method.
RE: coil spring material
CoryPad; The Matweb site is great.
RE: coil spring material
Have a lab recheck the material for Cr.
Jack
RE: coil spring material
Cr-0.02
Chemistry was verified by second lab.