2205/UNS S32205/DIN W. Nr. 1.4462
 

Form	ASTM
Rod, bar and shape	A 276, A 484
Plate, sheet and strip	A 240, A 480
Seamless and welded pipe	A 790, A 999
Seamless and welded tubing	A 789, A 1016
Fitting	A 815, A 960
Forged or rolled pipe flange and forged fitting	A 182, A 961
Billet and bar for forging	A 314, A 484

 
Chemical composition

%	Fe	Cr	Ni	Mo	C	Mn	Si	P	S	N
min	balance	22.0	4.5	3.0						0.14
max		23.0	6.5	3.5	0.030	2.00	1.00	0.030	0.020	0.20

 
Physical properties

Density	7.69 g/cm3
Melting range	1385-1443℃

Features: 2205 is a duplex stainless steel with nearly equal proportions of austenite and ferrite when properly heat treated. This microstructure makes it much more resistant to stress corrosion cracking than stainless steel 304 and 316L. 2205’s higher chromium, molybdenum and nitrogen contents give it significantly improved pitting and crevice corrosion resistance in the presence of chlorides. Its yield strength is about twice that of austenitic stainless steels. It is highly suitable for 
Applications in environments containing chlorides and hydrogen sulfide such as marine applications and oil and gas production.
Applications: Oil and gas industry piping, tubing and heat exchangers; pulp and paper industry bleaching equipment, liquor tanks and digesters; cargo tanks for ships and trucks; chemical processing industry pressure vessels, tanks, piping and heat exchangers; and food processing equipment.

Product	Size Range
Stainless steel seamless tube & pipe	OD: φ1-φ914.4mm WT:0.2-80mm
U-Tube	OD: φ12-φ38mm WT: 0.5-4mm

Steel Types	Typical Steel Codes（AISI）
Austenitic	TP304/304L, TP304H, TP316/316L, TP316H, TP316Ti, TP321, TP321H, TP347/H, TP347HFG, 904L, TP309S,TP310MoLN,TP310H, TP310S, TP317/17L, TP316LMo≥2.5,S31254,904L; etc
Duplex/Super duplex	S31803; S32205; S31500; S32750; S32760
Nickel-Alloy	UNS N08825, N08020, N08028, N08800,N08810,N08811,N04400,N06600,N06601,N06625,N06690,N06022,N10276,N10665,N10673, etc

Standard Type	Standards
EN	EN10216-5; EN10216-2
DIN	DIN 17456; DIN 17458
ASTM	ASTM A312, A213, A269, A511, A789, A790; B163, B423, B407, B668 ASME SA213, SA312, SA789, SA790; SB163, SB423, SB407, SB668
JIS	JIS G3459; G3463
GOST	GOST 9941; GOST 5632
GB	GB/T14975; GB/T14976; GB13296; GB5310; GB9948