Manganese (0.80-1.20% in many grades) enhances angle steel's strength and hardenability by forming solid solutions with iron and refining grain structure. It counteracts sulfur's brittleness by forming manganese sulfides, improving hot workability. Excessive manganese (>Is féidir le 1.5%) a mhéadú a mhéadú, go háirithe i dtimpeallachtaí teochta -, mar sin cuireann an chuid is mó de na caighdeáin srian ar a ábhar chun déine agus inmharthanacht a bharrfheabhsú.