VARIGON H2 is a two-component mixture containing 98% argon and 2% hydrogen. The addition of hydrogen to argon creates a more fluid weld pool, which reduces porosity levels in the weld. The extra energy released by the hydrogen also enables deeper penetration and better fusion. This improves the weld quality and reduces the likelihood of defects.
A more fluid weld pool also accelerates welding speeds. As a result, argon mixed with hydrogen has the added bonus of enhanced productivity compared with pure argon.
VARIGON H2 was developed specifically for TIG welding of austenitic stainless steel alloys across a variety of material thicknesses. It is primarily used for manual welding with an ideal operating range of up to about 10mm, although it can be used successfully outside this band. VARIGON H2 can also be employed as a purging gas where a high-quality finish inside the component is required.
Benefits at a Glance
Low surface oxidation, resulting in faster clean-up times and less cleaning chemicals
Improved fusion for reduced reject rates and faster welding speeds
Easier to use thanks to more fluid weld pool
Neater, more consistent weld appearance
Less gaseous fumes for improved workshop environment.