Welding Carbon Steel To Inconel. This is normally the easiest Inconel alloy to seal and is effective when two Inconel pieces need to be welded together. However when the base metal temperature is lower than 15C the joint area of two sides with a length of 250 mm 300 mm shall be preheated to 15C 20C to.
Low cost optimization solution to carbon steel flange cladded with 625 is discussed in this article. Whether you are welding Inconel Alloy 625 most likely you are or Alloy 600 alloy 686 Alloy 800 Alloy 825 etc to carbon steel the proper filler is Alloy 625 called Alloy112 in stick electrode form which is a AWS ENiCrMo-3. The CRA Inconel 625 weld overlay on carbon alloy steel flanges can be done by submerged arc welding SAW shielded metal arc welding SMAW gas tungsten arc welding GTAWTIG plasma arc welding laser welding and friction welding.
The filller metal must be austenitic and ferritic filler metals must not be used.
Levin et al. The current work was carried out to characterize welding of AISI 310 austenitic stainless steel to Inconel 657 nickelchromium superalloy. The main thing you will notice is that the puddle is more sluggish than stainless and it does not take much amperage compared to stainless or carbon. It will measure laminar bonds on top of existing metals.