A modern world would be unimaginable without electric arc welding it is one of the oldest processes for joining metals and used all over the world It is generally known as MMA manual metal arc welding Electric arc welding with stick electrodes is still indispensable in steel and pipeline construction and can be used under all weather conditions Today around 25 to 30 Stick welding for instance is inexpensive and easy to learn It s also slower and less versatile than some other methods Oppositely TIG welding is difficult to learn and requires an elaborate welding rig TIG welding produces high quality welds however and can weld materials that other methods can t Torch welding represents another popular welding method This process Welding of Stainless Steels and Other Joining Methods 1 Introduction 2 Stainless Steel Welding Characteristics 3 Austenitic Stainless Steels 4 Martensitic Stainless Steels 5 Ferritic Stainless Steels 6 Precipitation Hardening Stainless Steels 7 Weld Rod Selection 8 Welding Although commonly referred to as stainless steel the steels covered in this article should be more correctly referred to as austenitic 18 8 or chromium nickel stainless steels As with the other types of stainless steels the austenitic stainless steels are corrosion and oxidation resistant due to the presence of chromium that forms a self healing protective film on the welding characteristics of stainless steels so they may exercise better control over the finished products with respect to welding In addition to welding other ancillary joining methods are discussed including soldering and brazing

Stainless steels including a grade 304 or grade 316 can be welded to a plain carbon steel using metal arc welding MIG or tungsten arc welding TIG welding However MIG welding is recommended due to the different melting temperatures of the different steels because it uses a filler material to connect the different steels carbon steel pipes Although many welders Gas tungsten arc welding GTAW also known as tungsten inert gas TIG welding is an arc welding process that uses a non consumable tungsten electrode to produce the weld The weld area and electrode are protected from oxidation or other atmospheric contamination by an inert shielding gas argon or helium A filler metal is normally used though some welds known as When welding other metals such as cast iron stainless steel aluminium alloys and copper alloys fluxes are used to clean and protect the metal from oxidation Equipment The welding torch has two knurled control knobs which regulate the flow rates of oxygen and acetylene so that a neutral or slightly oxidizing or reducing flame is obtained depending on the application MATCHLESS IN STAINLESS B 246 hler Welding weldCare is a leading producer of superior pickling products for stainless steels and special alloys For over 50 years B 246 hler Welding weldCare has worked closely with leading producers of stainless steel and offers exten sive knowledge and a wide range of finishing chemicals 187 Pickling Gels 187 Pastesthe welding characteristics of stainless steels so they may exercise better control over the finished products with respect to welding In addition to welding other ancillary joining methods are discussed including soldering and brazing The Specialty Steel Industry of North America SSINA and the individual companies it

Four widely used principal processes that are used for fusion welding of stainless steels are SMAW Shielded Metal Arc Welding GTAW Gas Tungsten Arc Welding GMAW Gas Metal Arc Welding SAW Submerged Arc Welding There are some other fusion welding methods like electron beam laser and plasma arc welding Welding is a fabrication process that joins materials usually metals or thermoplastics by using high heat to melt the parts together and allowing them to cool causing fusion Welding is distinct from lower temperature techniques such as brazing and soldering which do not melt the base metal In addition to melting the base metal a filler material is typically added to the joint to The ARC Welding Technology department offers students the opportunity to pursue an Associates in Science degree or several certificates The department is committed to preparing students for success in an exciting in demand career field ATLAS STEELS METAL DISTRIBUTION Stainless steel grade chart ATLAS STEELS – SPECIALTY STEELS PRODUCT REFERENCE MANUAL SECTION 9 APPENDICES Printed November 2000 1 S9 Chemical analysis specified Grade UNS No C Si Mn P S Cr Mo Ni Other 253MA S30815 0 05 1 1 2 0 0 8 0 040 0 030 20 0 22 0 10 0 12 0 N 0 14 0 20 0 10 Ce 0 03 0 08gases Sulphite liquors and acids such as acetic citric lactic and nitric Welding wire for joining dissimilar steels Excellent corrosion resistance at normal temperatures Good resistance to

This does not occur on stainless steels in the building industry as the corrosion conditions are never that aggressive it requires typically immersion in acids 15 Corrosion resistance of stainless steels b What is pitting corrosion 1 2 3 7 Pitting corrosion or pitting is a form of extremely localized corrosion that leads to the creation of small holes in the metal This picture 2001 09 13 nbsp 0183 32 Grade 316 is the standard molybdenum bearing grade second in importance to 304 amongst the austenitic stainless steels The molybdenum gives 316 better overall corrosion resistant properties than Grade 304 particularly higher resistance to pitting and crevice corrosion in chloride environments It has excellent forming and welding characteristics It is readily Stainless steels are always welded in the DCEN Direct Current Electrode Negative or DCSP Direct Current Straight Polarity mode In these condi tions it is the workpiece that is struck by the electrons enhancing penetration while the electrode which is generally made from thoriated tungsten 2 ThO2 under goes very little wear The 17 chapters in this volume cover the fundamentals of welding cutting joining and allied processes metallurgy the physics of welding and cutting heat flow in welding residual stress and distortion and many other topics More than 700 drawings schematics and photographs illustrate the text Approximately 170 tables provide categorized or comparative information 2020 02 20 nbsp 0183 32 Austenitic stainless steels such as grade 304 stainless or grade 316 stainless can be welded to plain carbon steel using MIG and TIG welding When welding stainless steel to a dissimilar metal such as plain carbon steel weld processes such as MIG welding that use filler material are preferred Resistance welding of stainless and carbon steel isn t typically done as