An electrical connector including an electrical contact and an overmolded housing. The electrical contact includes an electrically conductive substrate of an alloy material and at least one sealing coating on a first section of the substrate. The sealing coating includes chromium and/or zinc. The overmolded electrical connector housing is overmolded onto at least a portion of the first section on the sealing coating. The sealing coating prevents a passage from forming at a joint between the contact and the overmolded housing for preventing flow of vapor and/or liquid and/or other fluid through the joint.