This report discusses the welding behaviors of the elements tungsten@ tantalum@ molybdenum@ columbium@ zirconium@ titanium and beryllium and their alloys. For purposes of discussion@ these elements have been divided into a refractory metals group comprised of the first four elements mentioned and a reactive metals group comprised of the last three elements. The refractory metals are members of Groups V-A and VI-A in the periodic table and consequently exhibit many similar properties. Property similarities among the reactive elements are not consistent since beryllium is a member of Group 11-A and titanium and zirconium are members of Group IV-A of the periodic table. Despite the group designation@ all metals discussed share the common characteristic of reacting with the atmospheric gases@ oxygen and nitrogen
BULLETIN 85-1963由WRC - Welding Research Council 发布于 1963-02-01,并于 2012-09-24 实施。
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