BS EN 12071:2000 – A single copy of this British Standard is licensed to Akin Koksal
1 Scope
This standard specifies requirements for classification of tubular cored electrodes used in gas shielded metal arc welding of creep-resisting and low alloy elevated temperature steels.
The classification is based on the chemical composition of the all-weld metal. 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 standard, pulsed current is not used for determining the electrode classification.
2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies.
EN 439 Shielding gases for arc welding and cutting
EN 759 Welding consumables – Technical delivery conditions for welding filler metals – Type of product, dimensions, tolerances and marking
EN 1597-1 Welding consumables – Test methods – Part 1: Test piece for all-weld metal test specimens in steel, nickel and nickel alloys
EN 1597-3 Welding consumables – Test methods – Part 3: Testing of positional capability of welding consumables in a fillet weld
EN ISO 13916 Welding – Guidance on the measurement of preheating temperature,interpass temperature and preheat maintenance temperature (ISO 13916:1996)
3 Classification
The classification includes all-weld metal properties obtained with a tubular cored electrode and appropriate shielding gas combination as given below.
The classification is divided into six parts:
1) the first part gives a symbol indicating the product/process to be identified;
2) the second part gives a symbol indicating the chemical composition of all-weld metal;
3) the third part gives a symbol indicating the type of electrode core;
4) the fourth part gives a symbol indicating the shielding gas;
5) the fifth part gives a symbol indicating the welding position;
6) the sixth part gives a symbol indicating the hydrogen content of deposited metal.
In order to promote the use of this standard, the classification is split into two sections:
a) Compulsory section
BS EN 12071:2000 – A single copy of this British Standard is licensed to Akin Koksal