Type 304L is an extra low-carbon variation
of Type 304 with a 0.03% maximum
carbon content that eliminates carbide
precipitation due to welding. As a result,
this alloy can be used in the ”as-welded“
condition, even in severe corrosive conditions.
It often eliminates the necessity
of annealing weldments except for
applications specifying stress relief. It
has slightly lower mechanical properties
than Type 304.