ER70S6 is a mild steel welding wire that contains higher levels of manganese and silicon than other standard grades of MIG wire to product high quality welds when used on dirty, oily, or rusty steel.  The high silicon content increases the fluidity of the weld pool, thus creating a smoother bead appearance and resulting in minimal post-weld grinding.  This wire is engineered to provide porosity-free, x-ray quality welds at the highest tensile strength (as welded) of all the plain carbon steel wires.
Typical Applications:  general shop applications with poor fit-up or rusty, oily plates; steel castings or forging salvage; home projects; sheet metal; tanks; construction work
 
AWS Class: ER70S6
Certification:    AWS A5.18/A5.18M:2005
Alloy:  ER70S6
ASME SFA A5.18
 
ER 70S2 is a premium MIG & TiG wire for welding on all grades of mild and carbon steels, producing quality welds with minimal porosity.  It is a triple deoxidized wire (Zirconium, Titanium, and Aluminum) making it an excellent choice for welding over rust and mill scale.  No flux is required with this product.
Typical Applications:  pipes and offshore drilling rigs, structural steel work 

 
AWS Class: ER 70S2
Certification:         AWS A5.18/A5.18M:2005
Alloy:  ER70S2
ASME SFA A5.1
 
 
ER80S-D2 is a mild steel solid wire used in situations where porosity is a problem or when you must counter high-sulfur or carbon content in your base metal.  It contains high levels of manganese and silicon to provide good wetting as well as good rust and scale tolerance.
 
Typical Applications:    x-ray quality applications, high-strength welds, steam boilers, pressure tanks, gas pipes, heat exchanges, petrochemical industry

 
AWS Class: ER80S-D2
Certification:  AWS A5.28/A5.28M:2005
Alloy:  ER80S-D2
AWS/ASME SFA A5.28