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303 vs 304

303 vs 304

303 vs 304

(OP)
I am making some prototype parts for use in an aircraft wing actuator.  We typically use 304SS.  I have 303SS on hand and can get the parts faster if I use it.  The components are small, less than 1 inch diameter, and basically house some bearings and other components.  Not a lot of stress.  Does it sound like the 303SS would be an acceptable substitute?  Thanks in advance.

RE: 303 vs 304

Why are you asking Eng-Tips instead of your customer?  If I worked for Boeing, etc. I would never approve the use of Type 303 for anything.  Too many problems with fatigue, fracture, and corrosion.

RE: 303 vs 304

If you are looking at fit-up trials and static tests, maybe.
If you want flight hardware, no way.
Some 303 isn't too bad, but some of it is awfull.

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