303 vs 304 1

[ed911]

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.

 

[TVP]

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.

 

[EdStainless]

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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[Kenneth]

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