ISO 14171:2016规定了非合金钢和细晶粒钢埋弧焊焊态和焊后热处理状态下焊条/焊剂组合和焊缝金属的分类要求，最小屈服强度高达500 MPa或最小抗拉强度高达570 MPa。一种焊剂可分为不同的实心线电极和管状药芯电极。固体丝电极也根据化学成分单独分类。 它是一个组合规范，规定使用基于屈服强度和平均冲击能（47 J）的系统进行分类，或使用基于抗拉强度和平均冲击能（27 J）的系统进行分类。 a） 根据ISO 14171，带有后缀字母“a”的段落和表格仅适用于使用基于屈服强度和焊接金属平均冲击能量47 J的系统分类的焊条/焊剂组合和焊丝焊条: 2016 b） 根据ISO 14171:2016，带有后缀字母“b”的条款和表格仅适用于使用基于抗拉强度和27 J焊缝金属平均冲击能量的系统分类的焊条/焊剂组合和焊丝焊条。 c） 没有后缀字母“A”或后缀字母“B”的条款和表格适用于根据ISO 14171:2016分类的所有电极/焊剂组合和线电极。 单次运行和两次运行技术的通量根据两次运行技术进行分类。

ISO 14171:2016 specifies the requirements for the classification of electrode/flux combinations and weld metal in the as-welded condition and in the post-weld heat-treated condition for submerged arc welding of non-alloy and fine grain steels with minimum yield strength of up to 500 MPa or a minimum tensile strength of up to 570 MPa. One flux can be classified with different solid wire electrodes and tubular cored electrodes. The solid wire electrode is also classified separately based on chemical composition. It is a combined specification providing for classification utilizing a system based upon the yield strength and the average impact energy for weld metal of 47 J, or utilizing a system based upon the tensile strength and the average impact energy for weld metal of 27 J. a) Paragraphs and tables which carry the suffix letter "A" are applicable only to electrode/flux combinations and wire electrodes classified using the system based upon the yield strength and the average impact energy for weld metal of 47 J, in accordance with ISO 14171:2016. b) Clauses and tables which carry the suffix letter "B" are applicable only to electrode/flux combinations and wire electrodes classified using the system based upon the tensile strength and the average impact energy for weld metal of 27 J, in accordance with ISO 14171:2016. c) Clauses and tables which do not have either the suffix letter "A" or the suffix letter "B" are applicable to all electrode/flux combinations and wire electrodes classified in accordance with ISO 14171:2016. Fluxes for the single-run and two-run techniques are classified on the basis of the two-run technique.