1) Yes
2) No
3) Yes
4) Stringers
5) I have used small diameter 5/64' and 3/32' Avesta and Sandvic
The fitup is very critical and this is really a pain compared to GTAW. The advantage for doing this was welding the root pass in a composite (SA210 A-1 Core with 304/8 clad) window weld. The SMAW process is better suited for these type of welds since the joint is welded through an opening (Window) cut in the tube. This opening doesnt always lend itself to sticking a tig rig and wire and being able to see whats happening.
Some of the electrodes I have used made me feel like I was a good stainless welder and others made me wonder if I had spent the last 20 years of my life in the wrong trade.
Small stringer beads are the preferred method. Some people have fine looking welds using a weave but SS doesnt need to stay hot any longer than needed so I suggest stringers.
The thickness of the base metal can affect your ability to stick weld SS. The thicker, the easier. The more energy that can be absorbed by the material, the faster the puddle cools off. The faster it cools, less time to sag.
My last experience with SMAW SS was typical of the 2nd situation described 3 paragraphs above so I may not be much help!
Have a nice day
Gerald Austin
www.weldinginspectionsvcs.com
2) No
3) Yes
4) Stringers
5) I have used small diameter 5/64' and 3/32' Avesta and Sandvic
The fitup is very critical and this is really a pain compared to GTAW. The advantage for doing this was welding the root pass in a composite (SA210 A-1 Core with 304/8 clad) window weld. The SMAW process is better suited for these type of welds since the joint is welded through an opening (Window) cut in the tube. This opening doesnt always lend itself to sticking a tig rig and wire and being able to see whats happening.
Some of the electrodes I have used made me feel like I was a good stainless welder and others made me wonder if I had spent the last 20 years of my life in the wrong trade.
Small stringer beads are the preferred method. Some people have fine looking welds using a weave but SS doesnt need to stay hot any longer than needed so I suggest stringers.
The thickness of the base metal can affect your ability to stick weld SS. The thicker, the easier. The more energy that can be absorbed by the material, the faster the puddle cools off. The faster it cools, less time to sag.
My last experience with SMAW SS was typical of the 2nd situation described 3 paragraphs above so I may not be much help!
Have a nice day
Gerald Austin
www.weldinginspectionsvcs.com
![Stainless Steel Welding Electrode Classification Stainless Steel Welding Electrode Classification](https://i0.wp.com/www.tullyn.com/wp-content/uploads/2018/03/E308H-16-Stainless-Steel-Welding-Electrode.jpg?fit=500%2C500&ssl=1)
309 Stainless Welding Electrodes
309 Stainless Electrodes. Description: Stainless Steel Electrode. Typical Application: Used for welding similar alloys in wrought or cast form; occasionally used for welding Type 304 and similar base metals when severe corrosion conditions exist; and, at times, welding dissimilar steels. OK 67.13 is an austenitic, stainless-steel electrode for welding 25Cr20Ni steels. The weld metal resists scaling up to 1100-1150°C and does not contain any measureable ferrite. OK 67.13 can also be used for welding certain air-hardening steels such as armour. 5.11.0.5 Another common use of stainless steel filler metals is the overlaying or cladding of less expensive steels with a layer of stainless. Mild steel tanks designed to hold corrosive liquids may be lined with stainless steel in this manner. Usually, continuous bare or flux cored electrodes are used with an automated welding setup. Current and penetration must be controlled closely to. 308 electrodes are used to weld unstabilized 18-8 stainless steels such as Types 301, 302, 304. 308 electrodes provide corrosion resistance and physical properties equal to or greater than the steels for which they are recommended. Typical applications include dairy, distillery and restaurant equipment, and chemical tanks.
Stainless Steel Welding Electrode Classification Welding
For wire welding (GMAW & GTAW) use equivalent electrode classification (AWS A 5.14) B - AWS A 5.11 Classifica tion ENiCrFe-2 or -3 (-2 is Alloy 718 and -3 is Inconel 182) C - AWS A 5.11 Classification ENiCrMo-3 (Inconel 625) D - AWS A 5.4 Classification E308L-XX2.