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2205       ESPECIFICAÇÕES TÉCNICAS

2205 is a duplex (austenitic-ferritic) stainless steel containing about 40 - 50% ferrite 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 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.


Chemical Composition, %

 

 

Ni

Cr

Mo

Mn

Si

C

N

S

P

Fe

MIN

4.5

22.0

3.0

-

-

-

0.14

-

-

-

MAX

6.5

23.0

3.5

2.0

1.0

0.03

0.2

0.02

0.03

Balance

 


Specifications

UNS: S31803 S32205 W. Nr./EN: 1.4462 ASTM: A 240, A 276, A 479, A 789, A 790, A 182 (Grade F51), A 923
ASME: SA-240, SA-276, SA-479, SA-789, SA-790, SA-182 (Grade F51), SA-923, Pgroup 10H NACE: ISO 15156 / MRO175


Common Trade Names

2205 Stainless, Duplex 2205

 

 



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