2205 stainless steel welding procedure pdf

Generally 2205 costs around 20% more than 316, and 316 is around 40% higher than 304. Stainless steels austenitic stainless steels include the 200 and 300 series of which type 304 is the most common. Welding duplex stainless steel industry guide lasgroep regio. Weldingduplex stainless must follow precise instructions. The high alloy content and the presence of a ferritic matrix render dss susceptible to embrittlement and loss of mechanical properties, particularly toughness, through prolonged exposure at elevated temperatures. Welding duplex and superduplex stainless steel lasgroep regio. Gtaw, manual or automatic, is frequently used to weld duplex steels when the plate. Use the right filler metal to achieve right structure right properties. Improper welding procedures, such as welding with straight chromium stainless steel filler metals, will increase the susceptibility of the weld to brittle impact behavior. The primary alloying additions are chromium and nickel. This document provides lists of filler materials recommended to weld each duplex grade.

If you have any questions, please speak to us at metforce. Primary among these are loss of corrosion resistance and of toughness or post weld cracking. C1 and suggest parameters for weld ing procedure specifications wps that will assist welders achieve the. For instance, 2209 9%ni is recommended to weld ur 2205 5%ni. Weldingduplex stainless should be performed only after rigorous study special requirements imposed by this family of materials must be understood practical welding parameters must be completely determined thorough validation of the properties obtained must be accomplished duplex stainless steels contain about equal amounts of ferrite and austenite a short account was given in my. Clamping products, such as glass clamps and spigots.

Pdf welding of duplex stainless steel researchgate. Duplex and super duplex stainless steel customised formulations consistent quality. Welding of 2205 should always be carried out using duplex stainless electrodes similar to the parent metal. Welding welding procedures must be developed to achieve acceptable corrosion resistance and. Welding procedures should be designed to produce this same structure in the weld metal and heataffected zones. From our experience, splaying is around 50% less than 304 or 316l when using 2205. The concerns associated with welding duplex stainless steel refer to the heat affected zone, haz not generally to the weld metal.

Duplex stainless steels welding guidelines industeel arcelormittal. Duplex stainless steels are supplied with a microstructure of approximately equal. Weldability ak steel 2205 duplex can be readily welded with gas tungsten arc welding gtaw, gas metal arc welding gmaw, plasma, shielded metal arc welding smaw and submergedarc welding methods. In addition to the improved corrosion resistance compared with the 300 series stainless steels duplex steels also have higher strength. In the present study, uns s32205 duplex stainless steel plates were welded to aisi 316l stainless steel using pulsed gas tungsten arc welding process with three different filler metals. Practical guidelines for the fabrication of duplex stainless steels.

Selection of a joint design should accommodate the following guidelines. Welding of duplex and superduplex stainless steel, which was to be used as a guide. The data presented to the right are from tests conducted on 38 inch 0. Imoa is grateful to the international stainless steel forum and.

In order to avoid these problems, welding duplex stainless procedures should try to minimize the total time at high. Open joints have been recommended for manual gtaw, this to assure. Stainless steel world november 200747 section sizes or heavy sections with very low heat input. Nowadays, duplex stainless steel is a well recognized steel grade. Studies on the parametric effects of plasma arc welding of 2205 duplex stainless steel. Since the introduction, new processes, materials and classifications have been accepted. The actual welding of alloy 2205 is not difficult but it is necessary to design welding procedures that lead to a favorable phase balance after welding and one which will avoid precipitation of detrimental intermetallic or nonmetallic phases. Oxcyacetylene welding is however not recommended due to the possibility of carbon pick up in the weld area. Choose optimal welding method for each application. Ferritic stainless steels are nonhardenable fecr alloys. Types 405, 409, 430, 422 and 446 are representative of this group.