
Ventnor |

Well, yes and no.
By default, no. Two-handed weapons only add your strength bonus to their damage, not 1.5 * your strength.
However, if you are a solider and pick up the Melee Striker gear boost (a class feature that you can get as early as level 3), you can add 1.5 * your strength bonus to all melee attacks. But that also includes attacks made with one-handed weapons.