Mig Welding Copper To Stainless Steel

The ability to join a wide range of metals and thicknesses.

Mig welding copper to stainless steel.

On its own stainless steel is not a problem to weld. Stainless steel is a popular metal in welding for many reasons it s very strong it s ductile and it s easy to weld especially in comparison to many other kinds of metal. There are two issues with welding copper and stainless steel. Carbon steel stainless steel aluminum magnesium copper nickel silicon bronze and other alloys.

Click here to view full size acrobat pdf file. Properties of steel and copper during welding. When mig welding on stainless you usually have three choices of transfer depending on your equipment. First up the two metals have substantially different melting points.

Then there s the metallurgical issues of. Spray arc short circuiting or pulsed arc transfer. Alternative gases that you can use are 98 argon and 2 co2 or 98 argon and 2 oxygen mix. Steel is also highly anti corrosive hence the title stainless.

And to weld with stainless steel mig wire you ll need to use shielding gas. Not surprising considering that our mig s use 75 25 carbon dioxide for steel and aluminum welds best with straight argon. The oxides burn away and the copper will wet to the metal. Even though most of the welding machine manufacturers have included a table of materials and voltage settings in the machine it is highly important for you to pick the right kind of gas and electrode wire to be used for mig welding stainless steel.

He recommends a 75 25 argon helium mix. Sounds obvious i know. Here is the key to successful copper welding he said. Here are some advantages to mig welding.

Spray arc transfer filler metals for gas metal arc welding stainless steel are specified in aws a5 9 93. Forums welding techniques tig welding tig brazing stainless steel. Mode of metal transfer. Choose from various diameters of wire for different welders and welding projects.

Grainger carries a large stock of mig welding wire and flux core welding wire to meet your welding needs including aluminum carbon steel copper coated mild steel stainless steel and more. Mig welding is useful because you can use it to weld many different types of metals. Stainless steel mig welding wire. It tends to stack and not flow out to the edges of the weld.

A good weld bead. If the oxides do not burn away. Plus some stuff to make it easy to weld with. That gas is typically tri mix.

But it s an important point. Stainless steel melts at around 1400 c while copper melts at 1085 c that s a difference of 315 c this makes forming a puddle of the two metals extremely difficult. Solid stainless steel welding wire is well solid.