LITERATURE
SPECIFICATIONS
UNS: S31803, S32205
W. NR.: 1.4462
ASTM: A 240, A 276, A 479, A 789, A 790, A 182, A 923
ASME: SA 240, SA 276, SA 479, SA 789, SA 790, SA 182, SA 923
NACE: MRO175
ISO: 15156
FEATURES
- High resistance to chloride stress corrosion cracking
- Chloride pitting and crevice corrosion resistance superior to 317L stainless
- General corrosion resistance
- High strength
- Sulfide stress corrosion resistance
- Effective up to 600°F
APPLICATIONS
- Chemical process vessels & piping
- Heat exchangers
- FGD scrubber systems
- Pulp mill digesters
- Bleach washers
- Chip pre-steaming vessels
- Food process equipment
- Oil field piping
2205
2205 is a duplex (austenitic-ferritic) stainless steel containing approximately 50% ferrite and 50% austenite in the annealed condition. 2205 has been a practical solution to chloride stress corrosion cracking problems experienced with 304/304L or 316/316L stainless. The high chromium, molybdenum and nitrogen contents provide corrosion resistance superior to 316/316L and 317/317L stainless in most environments. 2205 is not suggested for operating temperatures above 600°F
The design strength of 2205 is significantly higher than 316/316L, often permitting lighter wall construction. 2205 has good notch impact toughness down to temperatures below – 40°F. 2205 is welded with E2209 or ER2209 fillers.
FORMS
MARKETS & INDUSTRIES
