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DUPLEX STAINLESS STEEL PIPES TUBES SUPPLIERS IN INDIA

Specifications

Duplex 2205 Pipe & Tube
Standards Seamless Welded
ASTM A 789 / 790 A 789 / 790
ASME SA 789 / 790 SA 789 / 790

Stock

NB Sizes Sch 5 Sch 10 Sch 40 Sch 80 Sch 160
Duplex Steel Pipe Size 1/8" available Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe
Duplex Steel Pipe Size 1/4" available Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe
Duplex Steel Pipe Size 3/8" available Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe
Duplex Steel Pipe Size 1/2" available Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe
Duplex Steel Pipe Size 3/4" available Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe
Duplex Steel Pipe Size 1" available Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe
Duplex Steel Pipe Size 1 1/4" available Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe
Duplex Steel Pipe Size 1 1/2" available Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe
Duplex Steel Pipe Size 2" available Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe
Duplex Steel Pipe Size 2 1/2" available Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe
Duplex Steel Pipe Size 3" available Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe
Duplex Steel Pipe Size 4" available Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe
Duplex Steel Pipe Size 5" available Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe
Duplex Steel Pipe Size 6" available Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe Duplex Steel 2205 A789 Seamless Pipe
Alloy Steel Seamless Pipe Suppliers Exporters in India

UNS S31803 – UNS S32205 PIPES TUBES

Duplex Seamless & Welded Tube
Duplex Seamless & Welded Pipe

Trade Name UNS Duplex Industry Specifications Chemical Composition Min.Tensile (KSI) Min.Yield
(KSI)
Elongation
%
SAF 2205®
22Cr
UNS S31803
ASME 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
90 65 25
SAF 2205®
22Cr
UNS S32205 ASME SA-182 (F60), SA-240, SA-798, SA-790, SA-815
ASTM A182 (F60), A240, A276, A479, A480, A798, A790, 
A815, A928, A988
SAE J405
C 0.30 max
Cr 22.0-23.0
Mn 
2.00 max
Mo 3.00-3.50
N 0.14-0.20 
Ni 4.50-6.50
P 0.030 max
S 
0.020 max Si1.00 max
 95 65 25

SAF 2205® is a registered trademark for Sandvik

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 300ºC as it suffers from precipitation of brittle micro constituents, nor below -50ºC because of its ductile-to-brittle-transition.

DUPLEX APPLICATIONS

  1. Chemical processing, transport and storage,
  2. Oil and Gas exploration and processing equipment,
  3. Marine and other high chloride environments,
  4. 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 35ºC. The grade is also resistant to chloride stress corrosion cracking (SCC) at temperatures of up to about 150ºC. 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 300ºC. If embrittled, this can only be rectified by a full solution annealing treatment. Duplex stainless steels are almost never used above 300ºC.

DUPLEX HEAT TREATMENT

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

Here are some typical compositions of duplex stainless steels:

Alloy Steel Seamless Pipe Suppliers Exporters in India
Grade  EN No/UNS Type Approx Composition 
Cr Ni Mo N Mn W Cu
2101 LDX 1.4162/ 
S32101
 Lean 21.5  1.5 0.3 0.22 5 - -
DX2202 1.4062/ S32202 Lean 23 2.5 0.3 0.2 1.5 - -
RDN 903 1.4482/ 
S32001
Lean 20 1.8 0.2  0.11 4.2 - -
2304

1.4362/ 
S32304

 Lean 23 4.8  0.3  0.10 - - -
2205 1.4462/ 
S31803/
S32205
Standard  22 5.7 3.1 0.17 - - -
2507 1.4410/ 
S32750
Super 25 7 4 0.27 - - -
Zeron 100 1.4501/ 
S32760
Super 25  7 3.2 0.25 - 0.7 0.7
Ferrinox
255/ 
Uranus 2507Cu
1.4507/ 
S32520/
S32550
Super 25 6.5 3.5 0.25 - - 1.5

The following table shows how the duplex steels compare with some austenitic and ferritic grades. 

Grade EN No/UNS Type Typical PREN
430 1.4016/ 
S43000
Ferritic 18
304 1.4301/ 
S30400
Austenitic  19
441 1.4509/ 
S43932
Ferritic 19
RDN 903 1.4482/ 
S32001
Duplex  22
316  1.4401/ 
S31600
Austenitic  24
444 1.4521/ 
S44400
Ferritic 24 
316L 2.5 Mo 1.4435 Austenitic  26
2101 LDX  1.4162/ 
S32101
Duplex 26
2304 1.4362/ 
S32304
Duplex 26
DX2202 1.4062/ S32202 Duplex 27 
904L 1.4539/ 
N08904
Austenitic 34
2205  1.4462/ 
S31803/
S32205
Duplex 35
Zeron 100  1.4501/ 
S32760
Duplex 41
Ferrinox 255/ 
Uranus 2507Cu
1.4507/ 
S32520/
S32550
Duplex  41
2507 1.4410/ 
S32750
Duplex 43
6% Mo 1.4547/ 
S31254
Austenitic 44
Alloy Steel Seamless Pipe Suppliers Exporters in India

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