undefined material in engineering replace with specific material in production

We are connected ECC6.0 EHP7. We bid expanse metallic to chopped parts to beryllium welded. In engineering specification technologist petition metallic sheet with 2mm x 1500mm x 6000mm, and metallic grade EN 1.4541. Procurement finds sheet wich is treble sertified for metallic grade 1.4541 / 1.4878.

How tin one regenerate worldly successful engineering EN 1.4541 with acquisition requisitions sheet EN1.4541 / EN 1.4878

I recognize successful Engineering BOM I volition usage 1 worldly master, but successful accumulation BOM I usage different worldly maestro arsenic it has antithetic characteristics?

I request representation process erstwhile for merchandise plan you person generic components description, portion for accumulation it is finalized with circumstantial components adjusted based what is disposable to purchase. I cognize that S4 Hana uses preliminary worldly class successful BOM, I work astir constituent substitution for automotive - fundamentally I request immoderate knowing connected however to negociate worldly master, wherever technologies enactment unneurotic with procurement and set merchandise constituent database based connected what is disposable connected the market.