焊接消耗品.抗蠕变钢手工电弧焊接用涂敷焊条.分类

[中文适用范围]： 本文件规定了基于热处理状态下的全焊缝金属，用于铁素体和马氏体抗蠕变钢和低合金高温钢的手工金属电弧焊的带药皮焊条的分类要求。本文件是使用基于全焊缝金属化学成分的系统并具有全焊缝金属屈服强度和冲击能量要求的分类组合规范，或使用基于全焊缝金属抗拉强度和化学成分的系统。a) 带有后缀字母“A”的段落和表格仅适用于根据本文件根据化学成分分类到系统并具有全焊缝金属屈服强度和冲击能量要求的焊条。b) 带有后缀字母“B”的段落和表格仅适用于根据本文件根据全焊缝金属抗拉强度和化学成分分类到系统的焊条。 c) 不带后缀字母“A”或后缀字母“B”的段落和表格适用于根据本文件分类的所有覆盖电极。为了便于比较，一些表格包括了根据两个系统分类的电极的要求，将两个系统中成分和特性相似的单个电极放在特定表格的相邻行上。在表格中在一个系统中是强制性要求的特定行中，另一个系统中的类似电极的符号用括号标出。通过适当限制特定电极的配方，通常（但并非总是）可以生产出可以在两个系统中分类的电极，在这种情况下，电极和/或其包装可以标明其中一个或两个系统的分类。 [外文原描述]： ISO 3580:2017 specifies requirements for classification of covered electrodes, based on the all-weld metal in the heat-treated condition, for manual metal arc welding of ferritic and martensitic creep-resisting and low alloy elevated temperature steels. This document is a combined specification for classification utilizing a system based upon the chemical composition of the all-weld metal, with requirements for the yield strength and impact energy of the all-weld metal, or utilizing a system based upon the tensile strength and the chemical composition of the all-weld metal. a) Paragraphs and tables which carry the suffix letter "A" are applicable only to electrodes classified to the system based upon chemical composition, with requirements for the yield strength and impact energy of the all-weld metal under this document. b) Paragraphs and tables which carry the suffix letter "B" are applicable only to electrodes classified to the system based upon the tensile strength and the chemical composition of all-weld metal under this document. c) Paragraphs and tables which do not have either the suffix letter "A" or the suffix letter "B" are applicable to all covered electrodes classified under this document. For comparison purposes, some tables include requirements for electrodes classified according to both systems, placing individual electrodes from the two systems, which are similar in composition and properties, on adjacent lines in the particular table. In a particular line of the table that is mandatory in one system, the symbol for the similar electrode from the other system is indicated in parentheses. By appropriate restriction of the formulation of a particular electrode, it is often, but not always, possible to produce an electrode that can be classified in both systems, in which case the electrode, and/or its packaging, can be marked with the classification in either or both systems.