BS EN 12535:2000 – A single copy of this British Standard is licensed to Akin Koksal
1 Scope This standard specifies requirements for classification of tubular cored electrodes in the as-welded or stress relieved condition for gas shielded metal arc welding of high strength steels with a minimum specified yield strength higher than 500 N/mm². One tubular cored electrode may be tested and classified with different gases. 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.
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 based on the tubular cored electrode diameter 1 ,2 mm, or if this is not manufactured the next larger diameter manufactured, with the exception of the symbol for welding position which is based on EN 1 597-3.
The classification is divided into nine parts:
1 ) the first part gives a symbol indicating the product/process to be identified;
2) the second part gives a symbol indicating the strength and the elongation of the all-weld metal;
3) the third part gives a symbol indicating the impact properties of the all-weld metal;
4) the fourth part gives a symbol indicating the chemical composition of the all-weld metal;
5) the fifth part gives a symbol indicating the type of electrode core;
6) the sixth part gives a symbol indicating the shielding gas;
7) the seventh part gives a symbol indicating the welding position;
8) the eighth part gives a symbol indicating the hydrogen content of deposited metal;
9) the ninth part gives a symbol indicating the stress relief treatment in case this is applied.
In order to promote the use of this standard, the classification is split into two sections:
a) Compulsory section
This section includes the symbols for the type of product, the strength and elongation, the impact properties, the chemical composition, the type of core, the shielding gas and the stress relief treatment, i.e. the symbols defined in 4.1 , 4.2, 4.3, 4.4, 4.5, 4.6 and 4.9.
b) Optional section
This section includes the symbols for the welding positions for which the electrode is suitable and the symbol for hydrogen content, i.e. the symbols defined in 4.7 and 4.8.
The full designation (see clause 8) shall be used on packages and in the manufacturer’s literature and data sheets.
4 Symbols and requirements
4.1 Symbol for the product/process
The symbol for the tubular cored electrode used in the metal arc welding process shall be the letter T.
BS EN 12535:2000 – A single copy of this British Standard is licensed to Akin Koksal