Normally you can but it's up to the client, based on his designed parameters, to give the OK on the swap. If there is an ok get it in writing before the start of the fabrication.
I would look a little harder as there is a lot of dual certified materials out there. If you can find dual certified material I would run it by his purchasing agent and project manager.
The last time I was involved in such an issue I found virtually all bars, etc. were already dual certs as what is happening is the manufacturers are really just making the one grade (316L which meets 316 requirements). It is legitimately 316 and or 316L unless the customer has additional requirements.
Go for dual cert material. The only way to get 'real' 316 these days is to order a heat of it, of find a mill mistake.
The reason for so much dual cert material is that the minimum mechanical properties for 304L and 316L were set long ago, and they are way below what is actually manufactured.
= = = = = = = = = = = = = = = = = = = =
Corrosion, every where, all the time.
Manage it or it will manage you.
Can somebody email a dual cert sample for 316/316L? The supplier has no idea about the dual cert so I guess I have to show him one. Thank.
mingli979@hotmail.com
