317 / 317L stainless is a molybdenum containing austenitic stainless steel, with improved corrosion resistance over 304/304L and 316/316L stainless steel. The increased levels of chromium, nickel, and molybdenum over 316L stainless steel improve chloride pitting resistance and general corrosion. Through the controlled addition of nitrogen it is common for 317L to meet the mechanical properties of 317, while maintaining a low carbon content.
SPECIFICATIONS
UNS: S31703
W. NR.: 1.4438
ASTM: A 240
ASME: SA 240
FEATURES
- Improved general and localized corrosion compared to 304 / 304L and 316 / 316L
- Good formability
- Good weldability
APPLICATIONS
- FGD Systems
- Chemical Process Vessels
- Condensers in Power Generation
COMMON TRADE NAMES
317 / 317L
UNS: S31703 / ASME: SA 240