H4 Diffusible Hydrogen Level - combine with Lincolnweld® 888 flux for H4 diffusible hydrogen weld deposits. Low Temperature Impact Properties - charpy V-notch test results capable of exceeding 27 J (20 ft· lbf) at -73° C (-100° F) with Lincolnweld® 888™ flux. Excellent Tandem, AC and DC Operation - experience outstanding deposition rates, especially when used with the Lincoln Electric Power Wave® AC/DC 1000® SD welding power source . Self-Peeling Slag - clean and easy slag removal minimizes risk of inclusions, even in narrow gap applications.