Why All 316 Stainless Steel? For the underground piping industry, fi eld replacement of corroded cast iron or mild steel fi ttings installed years before has provided the water and wastewater industry a glimpse into the future of the life expectancy of underground fi ttings in a variety of soil types and surrounding environments. Replacement of fi ttings due to corrsive attack caused by levels of oxygen, carbon dioxide, slightly acidic water, stagnant slow moving waters, and unusual levels of other elements reveal that a more resistant material is often needed to ful fi ll or extend the systems life expectancy. There are many solutions to battle these environmental attacks including fusion applied epoxy coatings and encasement in polywrap & concrete. Another simple solution is to install 316(L) stainless steel fi ttings that will resist the destructive elements naturally. For industrial, plant and process piping, 316(L) stainless steel fi ttings provide the additional resistance to corrosive environments and are compatible with the stainless piping providing the performance and life expectancy for the enrire system. What distinguishes Type 316(L) from Type 304(L) is the addition of 2 to 3% molybdenum. The molybdenum increases the corrosion resistance of the chromium-nickel alloy to withstand attack by many industrial chemicals, solvents and even in the presence of chlorides (such sea water and de-icing salts). Strong, yet lightweight, 316(L) Stainless Steel has an industry wide proven track record in underground, industrial and process piping applications, environmental conditions including extreme temperatures. Selection of Stainless Steel Stainless steel, especially the austenitic 300 series grades, has become a waterworks industry standard with decades of proven corrosion resistant performance in underground, underwater, above ground applications and in treatment and process piping systems. Ranking well above both ductile iron and carbon steel on the galvanic chart for corrosion resistance, stainless steel provides the strength, weldability and heat resistance for pipe fi tting fabrication and applications. Commonly, water and wastewater fi ttings incorporate the 304/304(L) material in various sheet, plate, pipe and cast components. The 304/304(L) grade stainless steel provides corrosion resistance, weldability, machinability and strength at an economical cost. It is the stainless steel most popular for industrial and consumer applications. The same design of fi ttings are frequently o ff ered in the higher grade 316/316(L) stainless steel. While these two grades of stainless, 304(L) & 316(L), have an identical appearance, the 316(L) stainless steel has an addition of molybdenum for improved resistance to chlorides. Nickel and chromium contents are adjusted appropriately to maintain the austenitic characteristics. JCM Industries and All 316/316L Stainless Steel Fittings and Fabrications Featured are JCM’s most popular items available in All 316(L) stainless steel. JCM provides 316(L) stainless steel options in all our fabricated (constructed/welded) fi ttings and also includes many common production items with a 316(L) stainless steel option.
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