2205 duplex stainless steel

Duplex 2205 Stainless Steel Plate

Chemical Composition (%) of 2205 Duplex Stainless Steel Plate

	C	Mn	Si	P	S	Cr	Mo	Ni	N
2205 (S31803)	0.03	2.0	1.0	0.03	0.02	21.0- 23.0	2.5-3.5	4.5-6.5	0.08-0.20
2205 (S32205)	0.03	2.0	1.0	0.03	0.02	22.0-23.0	3.0-3.5	4.5-6.5	0.14-0.20

Mechanical Properties of 2205 Duplex Stainless Steel Plate

Grade	Tensile Strength ksi (min)	Yield Strength 0.2% ksi (min)	Elongation %	Hardness (HB) MAX
2205	90	65	25	217

Physical Properties of 2205 Duplex Stainless Steel Plate

	Density lb_m/in³	Electrical Resistivity mW•in	tdermal Conductivity (BTU/hr•ft•°F)	Heat Capacity BTU/lb_m•°F	Electrical Resistivity (in x 10^-6)
at 68°F	0.278	27.6	8.7	0.112	33.5
at 212°F		26.1	9.2	0.119	35.4
at 392°F		25.4	9.8	0.127	37.4
at 572°F		24.9	10.4	0.134	39.4

Alloy 2205 (UNS S32305/S31803) is a 22% chromium, 3% molybdenum, 5-6% nickel, nitrogen alloyed duplex stainless steel plate with high general, localized, and stress corrosion resistance properties in addition to high strength and excellent impact toughness.

Alloy 2205 duplex stainless steel plate provides pitting and crevice corrosion resistance superior to 316L or 317L austenitic stainless steels in almost all corrosive media. It also has high corrosion and erosion fatigue properties as well as lower thermal expansion and higher thermal conductivity than austenitic.

2205 Duplex Stainless Steel Plate Processing – Hot Forming:

Most Duplex 2205 producers recommend a maximum hot forming temperature between 2010 and 2100°F (1100 to 1150°C). If the shape of the work piece is not compact, the edges may be significantly cooler than the bulk, and there is risk of cracking in the cooler regions.

2205 Duplex Stainless Steel Plate Processing – Cold Forming:

Duplex 2205 has shown good formability in a variety of fabrications. The high strength of Duplex 2205 can pose problems. Even when the equipment has sufficient power, allowance must be made for higher spring-back caused by the grade’s high strength.

2205 Duplex Stainless Steel Plate Applications:

Chemical processing, transport and storage – pressure vessels, tanks, piping, and heat exchangers
Oil and gas exploration and processing equipment – piping, tubing, and heat exchangers
Marine and other high chloride environments
Effluent scrubbing systems
Pulp and paper industry – digesters, bleaching equipment, and stock-handling systems
Cargo tanks for ships and trucks
Food processing equipment
Biofuels plants

2205 Duplex Stainless Steel Equivalent Standards: