Assembly Instructions

Nitrogen (N
2
)
Nitrogen is a colorless, odorless and inert gas.
Nitrogen is suitable for the welding of chromium nickel steel.
It is not suitable for use with zircaloy and titan materials
because it can combine with these materials despite its inert-
ness.
When welding steel with nitrogen it should be considered that
the nitrogen lowers the stainless protection by removing the
chrome-nickel components from the steel.
Argon (Ar)
Argon is a colorless, odorless and inert noble gas contained in
air in a concentration of 0.93 % by volume. Argon is non-flam-
mable and non-poisonous. It is suitable as shielding gas for
chrome-nickel steel, zircaloy and titanium.
Helium (He)
Helium is a colorless, odorless and inert gas. Because of its
reduced density it is very light and quickly escapes upwards
when flowing out. For this reason, the consumption of helium as
shielding gas is considerably higher than for other gases.
It can be used as shielding gas for aluminum and Al alloys and
as addition when welding with nitrogen.
Recommendations
The following table (see "Tab. 2-10", pg. 2‐45) shows an over-
view of the recommended shielding gases.
2‐44
Using shielding gas
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