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VARIGON H5 is a two-component mixture containing 95% argon and 5% 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 increases welding speeds. As a result, argon mixed with hydrogen has the added bonus of enhanced productivity compared with pure argon.
With a higher hydrogen concentration than VARIGON H2, VARIGON H5 is ideal for TIG welding of austenitic stainless steel alloys across thicker welding sections. A much more fluid weld pool enables faster welding speeds. This is particularly useful in speed-oriented automatic welding applications. VARIGON H5 is thus primarily used for automatic and orbital welding with an ideal operating range of about 3 to 10mm, although it can be used successfully outside these guideline values. VARIGON H5 can also be employed as a purging gas, but extra care must be taken if it is used for this purpose.
Benefits at a Glance
Good penetration for greater weld depth and reduced weld prep effort
Improved fusion and weld properties for reduced reject rates
Higher welding speeds, resulting in greater productivity
Ideal for automatic applications
Lower costs due to reduced need for welding consumables.