scope:

Matching the analysis and properties of ultra-high-strength steel with weld metal from iron powder low-hydrogen type electrodes found possible. The development of ultra-high-strength steels (220,000- 300,000 psi) is reviewed and weld metal developed for use in their fabrication. Six different types of ultra-high-strength weld metal are proposed and the following properties investigated: Trans-verse and all-weld metal tensile and yield strengths, ductility, hardness, transverse and longitudinal bending properties, tough-ness as measured by the Chmpy V-notch impact, Jominy hard-ness, grain size determination and Lchigh restrained cracking tests. Most of the tests were made on the weld metal tempered over a wide range of temperatures.