1 Scope
This document specifies the requirements for classification of tubular cored electrodes
with or without a gas shield for metal arc welding of high-strength steels in the
as-welded condition or in the post-weld heat-treated condition with a minimum yield
strength higher than 550 MPa or a minimum tensile strength higher than 590 MPa. One
tubular cored electrode can be tested and classified with different shielding gases,
if used with more than one.
This document is a combined specification providing classification utilizing a system
based upon the yield strength and an average impact energy of 47 J of the all-weld
metal, or utilizing a system based upon the tensile strength and an average impact
energy of 27 J of the all-weld metal.
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— Subclauses and tables which carry the suffix “system A” are applicable only to tubular cored electrodes classified under the system based upon the yield strength and an average impact energy of 47 J of the all-weld metal given in this document.
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— Subclauses and tables which carry the suffix “system B” are applicable only to tubular cored electrodes classified under the system based upon the tensile strength and an average impact energy of 27 J of the all-weld metal given in this document.
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— Subclauses and tables which do not have either the suffix “system A” or the suffix “system B” are applicable to all tubular cored electrodes classified under this document.
It is recognized that the operating characteristics of tubular cored electrodes can
be modified by the use of pulsed current but, for the purposes of this document, pulsed
current is not used for determining the electrode classification.