Low carbon steels are those in which carbon percentage is around

$0\mathrm{.}1$ to $0\mathrm{.}35$

$0\mathrm{.}4$ to $0\mathrm{.}7$

$0\mathrm{.}8$ to $1\mathrm{.}5$

$1\mathrm{.}5$ to $2$