Benefits and industry first
- Customers are provided with options that best suit their needs with design and specification selected against the background of cargoes carried.
- By matching design and specification with the cargoes, customers may expect expenses associated with shell repairs to taper down as will the cost of non-utilization.
- By matching corrosive cargoes with shell material with greatly enhanced corrosion resistance owners can enjoy longer service live of their assets in comparison to regular ISO tank containers.
- The preservation of the tank shell thanks to its enhanced corrosion resistance above the current market standard austenitic grade ASTM 316L EN 1.4401 provides REMANUACTURE prospects with the much needed credibility
- For service that requires an austenitic grade of stainless steel that offers corrosion resistance significantly above ASTM 317L EN 1.443 there is austenitic grade ASTM 904L EN 1.4539
Elevated corrosion resistance Stainless steel Type 317L, UNS S31703
A low-carbon, molybdenum-containing austenitic stainless steel with improved resistance to chlorides relative to
Type 304L and Type 316L stainless steels.
Type 317L is a molybdenum-containing austenitic stainless steel intended to provide improved corrosion
resistance relative to Type 316L in highly corrosive process environments, particularly those containing chlorides
or other halides. The low carbon permits Type 317L to be welded without sensitization to intergranular corrosion
resulting from chromium carbide precipitation in the grain boundaries. Type 317L is non-magnetic in the annealed
condition but may become slightly magnetic as a result of welding.
Type 317L has excellent corrosion resistance in a wide range of chemicals, especially in acidic chloride
environments such as those encountered in pulp and paper mills.
Comparative analyses corrosion resistance
|ASTM 316L EN1.4401 UNSS31603||ASTM 317L EN 1.4438 UNS S31703|
|PREN: (Pitting Resistance Equiv.) No: 24||PREN: (Pitting Resistance Equiv.) No: 28|
|CPT: (Critical Pitting Corrosion Temperature) No: 27.5||CPT: (Critical Pitting Corrosion Temperature) No: 35|