AWS A5.23-A5.23M:1997 pdf download.Specification for Low-Alloy Steel Electrodes and Fluxes for Submerged Arc Welding
1. Scope
This specification prescribes requirements for the classification of low-alloy steel electrodes (both solid and composite) and fluxes for submerged arc welding.This document is the first of the A5.23 specifications which is a combined specification providing for classifi-cation utilizing a system based upon U.S. Customary Units, or utilizing a system based upon the International System of Units (SI). The measurements are not exact equivalents; therefore, each system must be used inde-pendently of the other, without combining values in any way. In selecting rational metric units, ANSI/AWS A1.1,Metric Practice Guide for the Welding Industry, is used where suitable. Tables and Figures make use of both U.S.Customary Units and SI Units which, with the applica-tion of the specified tolerances, provides for interchange-ability of products in both U.S. Customary and SI Units.
(1) Paragraphs, tables, and figures which carry the suffix letter “U”are applicable only to those products classified to the system based upon U.S. Customary Units under the A5.23 specification.
(2) Paragraphs, tables, and figures which carry the suffix letter“M”are applicable only to those products classified to the system based upon the International Sys-tem of Units (SI), under the A5.23M specification.
(3) Paragraphs, tables, and figures which do not have either the suffix letter“U" or the suffix letter“M”are ap-plicable to those products classified under either the U.S.Customary Units System or the International System of Units (SI).
3.2 Solid electrodes classified under one classification shall not be classified under any other classification in this specification. Composite electrodes may be classi-fied under more than one classification when used with different fluxes. Fluxes may be classified under any number of classifications, for weld metal in either or both the as-welded and postweld heat-treated conditions,using different electrode classifications. Flux -electrode combinations may be classified under A5.23 with U.S.Customary Units, A5.23M using the International Sys-tem of Units(SI), or both. Flux electrode combinations classified under both A5.23 and A5.23M must meet all requirements for classification under each system. The classification systems are shown in Figures 1U and 1M.
7.1.1 Solid Electrodes. Chemical analysis of the elec-trode is the only test required for classification of a solid electrode under this specification. The chemical analysis of the rod stock from which the electrode is made may also be used, provided the electrode manufacturing pro-cess does not alter the chemical composition.
7.1.2 Composite Elctrodes. Chemical analysis of weld metal produced with the composite electrode and a particular flux is the only test required for classification of a composite electrode under this specification.AWS A5.23-A5.23M pdf download.