ISO 18275-2011 pdf free download

ISO 18275-2011 pdf free download.Welding consumables — Covered electrodes for manual metal arc welding of high-strength steels — Classification
Produits consommables pour le soudage — Electrodes enrobées pour le soudage manuel a Parc des aciers a haute résistance — Classification.
Tensile and impact tests shall be carried out on weld metal in the as-welded condition and/or in the post-weld heat-treated condition, using an all-weld metal test assembly in accordance with ISO 15792-1 :2000+Amd.1 type 1.3 using 4,0 mm electrodes and welding conditions specified in 5.2 and 5.3.
When diffusible hydrogen removal treatment is specified by the manufacturer, it shall be carried out in accordance with ISO 15792-1.
5.2 Preheating and interpass temperatures
5.2A Classification by yield strength and
47 J impact energy
Welding of the all-weld metal test assembly shall be executed in the temperature range 120 °C to 175 C with the exception of the first layer which may be welded without preheat.
5.3 Pass sequence
5.2B Classification by tensile strength
and 27 J impact energy
Welding of the all-weld metal test assembly for non- low-hydrogen coatings (covering of types 10. 11, and 13) shall be executed in the temperature range 160 °C to 190 C. Welding of electrodes with basic coatings (covering of types 15, 16. 18. and 45) shall be executed in the temperature range 90 C to 130 ec
The direction of welding to complete a pass shall not vary. Each pass shall be executed with a welding current of 70 % to 90 % of the maximum current recommended by the manufacturer (see Table 5A or Table 4B, as appropriate). Regardless of the type of covering, welding shall be performed with a.c. for electrodes classified for use with both a.c. and d.c. and with d.c. using the recommended polarity for electrodes classified for use with only d.c.
5.3A Classification by yield strength and
47 J impact energy
The test assembly shall be completed using six to ten layers of weld metal. All layers except the top two shall consist of two passes. The top two layers may be completed with either two or three passes each.
6 Chemical analysis
5.3B Classification by tensile strength and 27 J impact energy
The test assembly shall be completed using seven to nine layers of weld metal. All layers shall consist of two passes, except the top two layers may be completed with three passes per layer.
Chemical analysis may be performed on any suitable test piece, but in cases of dispute, specimens in accordance with ISO 6847 shall be used. Any analytical technique may be used, but in cases of dispute. reference shall be made to established published methods.ISO 18275-2011 pdf free download.