High Quality Characteristics: The outstanding properties of Magna 307 will offer a tensile strength of up to 59 Kg. mm2 (84,000 p.s.i.) thus ensuring joints of maximum strength. Ignition and re-ignition qualities are exceptionally good and the ease at which Magna 307 can be applied is remarkable. Such characteristics will ensure high quality welds, even under adverse conditions, or where the welder has had limited experience. Coating Chemistry: Special materials which are easily ionized have been incorporated in the Magna 307 flux coatings. The ease of ionization permits the establishing and maintenance of the arc at lower welding currents and low open-circuit voltages. Such a characteristic is of great assistance when welding thin sections as the use of low welding currents will prevent burn-through. The Magna 307 coating forms a 'crucible action' at the tip of the electrode which controls the molecular velocity and stabilizes the arc. The crucible action also generates gases by pyrolysis of the coating together with ions and metal vapours of the core wire, thus producing a fine metallic spray transfer. The protective gases which exclude atmospheric contaminants from the molten weld metal are highly effective thus ensuring sound, high strength welds.