m303M303 is a type of mould steel with hh chromium and nickel content. It has hh hardness, strength and corrosion resistance. See its chemical composition, physical and mechanicalM249, M303, M337, MT365, M373, MS327, MST326, M343, M346, M347) Post, or Electronic (eTMA) PDF All postgraduate mathematics modules, except M840 (M820, M821, M823,