Summary:
Austenitic
stainless steels are iron-chromium-nickel alloys which
are hardenable only by cold working. Nickel is the main
element varied within the alloys of this class while carbon
is kept to low levels. The nickel content may be varied
from about 4% to 22% - higher values of nickel are added
to increase to ductility of the metal. When chromium is
increased to raise the corrosion resistance of the metal,
nickel must also be increased to maintain the austenitic
structure. These alloys are slightly magnetic in the cold-worked
condition, but are essentially non-magnetic in the annealed
condition in which they are most often used. The austenitic
types feature adaptability to cold forming, ease of welding,
high-temperature service, and, in general, the highest
corrosion resistance. Following are brief descriptions
of some of our most commonly ordered stainless steels:
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