Solar Atmospheres has installed an all-metal hot zone vacuum furnace at its facility in Souderton, PA, the sixth furnace of its kind at the facility and the fourth in its climate-controlled room.  The furnace, a new Mentor model built by sister company Solar Manufacturing, has a working zone of 12 by 12 by 18 in., and increases Solar’s capacity for processing sensitive materials such as PH stainless, nickel-based superalloys, titanium alloys and ferritic/austenitic stainless steels.