Aashto M 303-89 (2019) |

m303I completed this course in 2016 and achieved a grade 2 pass. It's a very tough course, in my opinion. You should have completed M208 (or its equivalent) recently prior to starting M303 inBÖHLER M303 HHHARD is a corrosion-resistant Cr-Mo steel, pre-hardened to approx. 1200 MPa with optimised toughness and polishability for processing corrosive moulding