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4. NAS

DIN Standards Committee Welding and allied processes

Overview

This International Standard proposes a method for classification of covered electrodes, in terms of chemical composition of the all-weld metal (system A) and in terms of tensile strength and chemical composition (system B). The mechanical properties of all-weld metal test specimens used to classify the electrodes vary from those obtained in production joints because of differences in welding procedure such as electrode diameter, width of weave, welding position and material composition. The classification according to system A is mainly based on EN 1599:1997. The classification according to system B is mainly based upon standards used around the Pacific Rim. This International Standard 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. The responsible German standardization committee is Working Committee NA 092-00-03 AA "Schweißzusätze (DVS AG W 5)" ("Welding consumables (DVS AG W 5)") at DIN Standards Committee Welding and allied processes (NAS).

Document: references other documents

Responsible national committee

NA 092-00-03 AA - Welding consumables (DVS AG W 5)  

Responsible european committee

CEN/TC 121/WG 3 - Welding consumables  

Responsible international committee

ISO/TC 44/SC 3 - Welding consumables