VARIGON N2.5 is a two-component mixture containing 97.5% argon and 2.5% nitrogen. The addition of nitrogen to argon has the effect of balancing the weld metal microstructure for improved in-service corrosion performance. This enhances resistance to pitting corrosion in particular. This mixture of argon and nitrogen is specifically designed for TIG welding of duplex stainless steels, often selected specifically for their resistance to corrosion. By enhancing that resistance, VARIGON N2.5 helps maintain the design life of a component – reducing scrapping rates and additional costs. The ideal operating range is up to 8mm, although VARIGON N2.5 can be used successfully outside this band.
Benefits at a Glance
Balanced weld metal microstructure
Enhanced corrosion resistance properties
Option of using cheaper consumables
Ease of use with same welding speed and fusion characteristics as argon.