Duplex 2205 - UNS S31803

High chloride stress corrosion resistance at high strength, superior to 304/316 grades in corrosion performance, excellent notch toughness.

 

Duplex 2205 Specification/Condition

• ASTM A484/ NACE MR0175

Duplex 2205 applications

• chemical process vessels
• pipe
• scrubber systems
• heat exchangers

Duplex 2205 technical data

• UTS (KSI): 109 Min (125 ksi Min)
• Yield 0.2% Offset (KSI): 80 ksi Min (110 ksi Min)
• EL (% Min): 30% (12%)
• RA (% Min): 50% ((33%)
• Hardness (HRC): 28 HRC (36 HRC)
• Charpy Impact Min. ft-lbs: 20 ft-lbs.

Duplex 2205 dimensions

• 0.5 – 6.5 in

Duplex 2205 Chemical composition (Wt %)

 

Carbon (C)	Manganes (Mn)	Phosphorus (P)	Sulfur (S)	Silicon (Si)	Nickel (Ni)	Cobalt (Co)
0.03 Max	2.0 Max	0.03 Max	0.02 Max	1.0 Max	4.5-6.5	–

 

Chromium (Cr)	Manganese (Mo)	Niobium + Tantalum (Nb (Cb) + Ta)	Titanium (Ti)	Copper (Cu)	Aluminum (Al)	Iron (Fe) & Others
21.0-23.0	3.0-3.5	–	–	–	–	Fe– Balance, Nitrogen– 0.14– 0.2