Carbon percentage of steel
1) Wrought iron-0.02%
2) dead mild steel-0.05%-0.15%
3) mile steel-0.15%-0.45%
4) medium carbon steel-0.45%-0.80%
5) high carbon steel-0.80%-1.5%
6) white cast iron-1.75%-2.3%
7) grey cast iron-3%-3.5%
8) pig iron-3.5%-4.5%