m303BÖHLER M303 EXTRA is a corrosion-resistant, martensitic chromium steel with very good toughness, corrosion resistance, good wear resistance and improved machinability and polishability. Compared to 1.2316, BÖHLER M303 EXTRAModelo 303. IVA. Autoliquidación. Gestiones destacadas. Si desea confeccionar y presentar el modelo de forma electrónica. Modelo 303. Ejercicio 2025.