Kovové materiály

Oblast zaměření: Svařování
Komise : CEN/TC 121 (Welding and allied processes)
Původce: CEN
K připomínkám do: 3.12.2019
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This International Standard specifies the requirements for chemical composition for soft solder alloys containing two or more of:

—    tin, lead, antimony, copper, silver, bismuth, zinc, indium and/or cadmium.

An indication of the forms generally available is also included.

Oblast zaměření: Svařování
Komise : CEN/TC 121 (Welding and allied processes)
Původce: CEN
K připomínkám do: 9.12.2019
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This document specifies requirements for the classification of covered electrodes and deposited metal in the as-welded condition and in the post-weld heat-treated condition for manual metal arc welding of non-alloy and fine grain steels with a minimum yield strength of up to 500 MPa or a minimum tensile strength of up to 570 MPa.

This document is a combined specification providing for classification utilizing a system based upon the yield strength and the average impact energy of 47 J of all-weld metal, or utilizing a system based upon the tensile strength and the average impact energy of 27 J of all-weld metal.

a)     Clauses, subclauses and tables which carry the suffix letter “A” are applicable only to covered electrodes classified to the system based upon the yield strength and the average impact energy of 47 J of all weld metal in this Document.

b)    Clauses, subclauses and tables which carry the suffix letter “B” are applicable only to covered electrodes classified to the system based upon the tensile strength and the average impact energy of 27 J of all weld metal in this Document.

c)     Clauses, subclauses and tables which do not have either the suffix letter “A” or the suffix letter “B” are applicable to all covered electrodes classified in this Document.

Oblast zaměření: Svařování
Komise : CEN/TC 121 (Welding and allied processes)
Původce: CEN
K připomínkám do: 9.12.2019
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This document specifies the preparation of test pieces and specimens. The purpose is to determine mechanical properties of all-weld metal where required by the consumable classification standard or for other purposes, in arc welding of steel, nickel and nickel alloys.

This document is not applicable to single- or two-run welding or fillet welding. For these cases, ISO 15792‑2 and ISO 15792‑3 apply.

Oblast zaměření: Svařování
Komise : CEN/TC 121 (Welding and allied processes)
Původce: CEN
K připomínkám do: 9.12.2019
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This document specifies requirements for the classification of solid wire electrodes, solid wires and rods for fusion welding of titanium and titanium alloys. The classification is based on their chemical composition.

The compositions of solid wire electrodes for metal inert gas (MIG) welding are the same as solid wire electrodes, solid wires and rods for tungsten inert gas (TIG) arc welding, plasma arc welding, laser beam welding, and other fusion welding processes.

Oblast zaměření: Svařování
Komise : CEN/TC 121 (Welding and allied processes)
Původce: CEN
K připomínkám do: 15.12.2019
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This document specifies the procedure to be used for deposition of a weld metal pad for chemical analysis. This document applies to deposition of a weld metal pad by use of covered electrodes, wire electrodes for gas shielded metal arc welding, tubular cored electrodes for gas shielded metal arc welding and for non-gas shielded metal arc welding, solid rods and tubular cored rods for gas tungsten arc welding, and wire-flux and strip-flux combinations for submerged arc welding or electroslag welding. This document is applicable to welding consumables for non-alloy and fine grain steels, high strength steels, creep-resisting steels, stainless and heat-resisting steels, nickel and nickel alloys, and copper and copper alloys.

Oblast zaměření: Kovové koroze
Komise : CEN/TC 219 (Cathodic protection)
Původce: CEN
K připomínkám do: 16.12.2019
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This document specifies a procedure for carrying out impressed current electrochemical chloride extraction from chloride bearing concrete in existing structures. It is applicable to atmospherically exposed parts of structures with ordinary reinforcement and/ or post-tensioned tendon ducts embedded in concrete. In the latter case, it is essential to verify that there is no risk of hydrogen embrittlement, if necessary by conducting trials and installing monitoring during the treatment.

This document does not apply to concrete containing pre-stressing steel which can suffer hydrogen embrittlement during chloride extraction, or to concrete containing coated or galvanized reinforcement.

In case of post-tensioned, pre-stressing concrete, the endangered tendon strands can be shielded by the tendon ducts from unwanted and/ or exceeded polarization into the cathodic range and respective water reduction.

Oblast zaměření: Svařování
Komise : CEN/TC 121 (Welding and allied processes)
Původce: CEN
K připomínkám do: 20.12.2019
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This document specifies requirements for classification of wire electrodes and weld deposits in the as-welded condition and in the post-weld heat-treated condition for gas shielded metal arc welding of non alloy and fine grain steels with a minimum yield strength of up to 500 MPa or a minimum tensile strength of up to 570 MPa. One wire electrode can be tested and classified with different shielding gases.

This document constitutes a combined specification providing classification utilizing a system based upon the yield strength and the average impact energy of 47 J of all-weld metal, or utilizing a system based upon the tensile strength and the average impact energy of 27 J of all-weld metal.

a)     Clauses and tables which carry the suffix letter “A” are applicable only to wire electrodes classified to the system based upon the yield strength and the average impact energy of 47 J of all-weld metal in accordance with this document.

b)    Clauses and tables which carry the suffix letter “B” are applicable only to wire electrodes classified to the system based upon the tensile strength and the average impact energy of 27 J of all-weld metal in accordance with this document.

c)     Clauses and tables which have neither the suffix letter “A” nor the suffix letter “B” are applicable to all wire electrodes classified in accordance with this document.

Oblast zaměření: Svařování
Komise : CEN/TC 121 (Welding and allied processes)
Původce: CEN
K připomínkám do: 5.01.2020
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This document specifies the preparation of butt weld test pieces and specimens. The purpose is to define test methods in order to determine strength and impact strength of the welded joint when testing welding consumables with single-run and two-run technique, not suitable for electro-slag or electro-gas welding.

This document is applicable to welding consumables for arc welding of steel.