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JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
Jiangsu Mittel Steel Industrial Limited Supply all kinds of Stainless Steel Sheet/Plate/Coil/Round ,Flat ,Angle bar/stainless steel seamless pipe /welded pipe /Elbow/Flange /Galvanized Steel sheet
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ASTM A790 Duplex Stainless Steel Tube UNS S32205 S31803 Seamless Tube

ASTM A790 Duplex Stainless Steel Tube UNS S32205 S31803 Seamless Tube

Brand Name : MITTEL
Model Number : 2205
Certification : SGS ISO MTC
Place of Origin : China
MOQ : 100KGS
Price : 5.5 USD/KG
Payment Terms : L/C, Western Union, T/T
Supply Ability : 5000KGS
Delivery Time : 14Days
Packaging Details : Export Packing
OD : 6-426mm
Length : 6000mm
Surface : NO.1
Type : Seamless and Welded
Condition : Cold Rolled
Grade : S32205 S31803 2205
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General Duplex stainless steel information

2205 is the most widely used duplex (ferritic/austenitic) stainless steel grade. It finds applications due to both excellent corrosion resistance and high strength. The standard duplex S31803 composition has over the years been refined by many steel suppliers, and the resulting restricted composition range was endorsed as UNS S32205 in 1996. Duplex S32205 gives better guaranteed corrosion resistance, but for much of the Duplex S31803 currently produced also complies with Duplex S32205.2205 is not generally suitable for use at temperatures above 300º C as it suffers from precipitation of brittle micro-constituents, nor below -50º C because of its ductile-to-brittle-transition.

Duplex Applications

Chemical processing, transport and storage,
Oil and Gas exploration and processing equipment,
Marine and other high chloride environments,
Pulp and paper digesters, liquor tanks and paper machines.

Duplex Corrosion Resistance

Excellent general corrosion resistance; Superior to Grade 316 in most environments. Excellent resistance to localized corrosion including intergranular, pitting and crevice corrosion; The CPT of 2205 is generally at least 35º C. The grade is also resistant to chloride stress corrosion cracking (SCC) at temperatures of up to about 150º C. Grade 2205 will often perform well in environments which cause premature failure of austenitic grades. It has better resistance to sea water then Grade 316.

Duplex Heat Resistance

Although 2205 has good high temperature oxidation resistance, this grade - like other duplex stainless steels - suffers from embrittlement if held for even short times at temperatures above 300º C. If embrittled, this can only be rectified by a full solution annealing treatment. Duplex stainless steels are almost never used above 300º C.

Duplex Heat Treatment

Solution treatment (annealing) - heat to 1020º C-1100º C and cool rapidly. This grade cannot be hardened by thermal treatment, but does work harden.


Trade NameUNSDuplex Stainless Steel Industry SpecificationsChemical CompositionMin.Tensile
(KSI)
Min.Yield
(KSI)
Elongation
%
SAF 2205®
22Cr
UNS S31803ASME SA-182 (F51), SA-240, SA-798, SA-790, SA-815
ASTM A182 (F51),A240, A276, A479, A789, A790, A815, A928, A988
SAE J405
C 0.30 max
Cr 21.0-23.0
Mn 2.00 max
Mo 2.50-3.50
N 0.08-0.20
Ni 4.50-6.50
P 0.030 max
S 0.020 max
Si 1.00 max
906525
SAF 2205®
22Cr
UNS S32205ASME SA-182 (F60), SA-240, SA-798, SA-790, SA-815
ASTM A182 (F60), A240, A276, A479, A480, A798, A790, A815, A928, A988

OD, inchOD Tolerance inch(mm)WT Tolerance %Length Tolernace inch(mm)
+-
≤ 1 / 2± 0.005 ( 0.13 )± 151 / 8 ( 3.2 )0
> 1 / 2 ~1 1 / 2± 0.005(0.13)± 101 / 8 (3.2)0
> 1 1 / 2 ~< 3 1 / 2± 0.010(0.25)± 103 / 16 (4.8)0
> 3 1 / 2 ~< 5 1 / 2± 0.015(0.38)± 103 / 16 (4.8)0
> 5 1 / 2 ~< 8± 0.030(0.76)± 103 / 16 (4.8)0
8~< 12± 0.040(1.01)± 103 / 16 (4.8)0
12~< 14± 0.050(1.26)± 103 / 16 (4.8)0



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