Question: what are the chemical components of structural steel?
Answer: Carbon – C. Carbon is added to iron to make steel. ...  Silicon – Si. Silicon is added to carbon steels to help deoxidise, or kill, them. ...  Manganese – Mn. ...  Sulphur – S. ...  Nitrogen – N. ...  Niobium – Nb. ...  Vanadium – V. ...  Titanium – Ti.