Grade 316L, the low carbon version of 316 and
is immune from sensitisation (grain boundary carbide precipitation). Thus it is
extensively used in heavy gauge welded components (over about 6mm) &
medical industry. There is commonly no appreciable price difference between 316
and 316L stainless steel.
316 Stainless steel easily than other iron-based metals, but it’s not literally
“stainless”. Just like standard steel, stainless can get marked up by
fingerprints and grease, develop discoloration, and eventually rust. The
difference is resilience. Stainless steel can withstand much more time and
abuse before showing signs of wear.
All steels have the same basic iron and carbon
composition, but stainless steel also contains a healthy dose of chromium—the
alloy that gives stainless steel its famous corrosion resistance.
Stainless steel may be suitable for fresh water, but in higher
chloride levels stainless steel 316 is preferable. is
considered to be the strongest of 316L classifications and able to withstand
corrosion longer. The conditions in tidal river estuaries and seawater
where higher chlorides, low flow rates and low oxygen levels can predominate
may require higher molybdenum grade stainless steels such as a 6% molybdenum
grade Care must also be taken to avoid bimetallic (galvanic) corrosion if
combinations of dissimilar metals are to be used.
Properties are similar to those of Type 304
except that this alloy is somewhat stronger at elevated temperatures.