Sandvik SAF 2205 duplex stainless steel pipe manufacturer and suppliers

Sandvik SAF 2205 duplex stainless steel pipe, Sandvik SAF 2707, Sandvik SAF 3207, Sandvik SAF 2507, Sandvik SAF 2205, Sanmac 2205, Sandvik SAF 2304, Sandvik 3RE60 duplex stainless steel seamless pipe

Dealer, exporter & suppliers of Sandvik SAF 2205 duplex stainless steel pipe, ASTM A790 S32750 2507 SMLS Super Duplex Stainless Steel Pipe, ASTM A790 2205 Duplex Stainless Steel Pipes, Duplex Steel Seamless Pipes, ASTM A 789 / 790 ASME SA 789 / 790 duplex stainless steel seamless pipe

Sandvik SAF 2205 duplex stainless steel pipe sizes & stock

PIPE TUBE TYPE NB SIZES SCH 5 SCH 10 SCH 40 SCH 80 SCH 160
Sandvik SAF 2205 duplex stainless steel pipe
1/8"
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Sandvik SAF 2205 duplex stainless steel pipe
1/4"
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Sandvik SAF 2205 duplex stainless steel pipe
3/8"
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Sandvik SAF 2205 duplex stainless steel pipe
1/2"
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Sandvik SAF 2205 duplex stainless steel pipe
3/4"
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Sandvik SAF 2205 duplex stainless steel pipe
1"
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Sandvik SAF 2205 duplex stainless steel pipe
1 1/4"
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Sandvik SAF 2205 duplex stainless steel pipe
1 1/2"
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Sandvik SAF 2205 duplex stainless steel pipe
2"
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Sandvik SAF 2205 duplex stainless steel pipe
2 1/2"
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Sandvik SAF 2205 duplex stainless steel pipe
3"
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Sandvik SAF 2205 duplex stainless steel pipe
4"
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Sandvik SAF 2205 duplex stainless steel pipe
5"
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Sandvik SAF 2205 duplex stainless steel pipe
6"
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Contents:

Sandvik Logo

Sandvik SAF 2205 duplex stainless steel pipe

With the largest and most comprehensive pipe and tubing extrusion capability in the world, L.G. Pipes and Tubes offers the widest variety of materials and sizes for all of your applications. L.G. Pipes and Tubes serves the Power Generation market with transfer pipe, boiler tube, main steam pipe, hot re-heat pipe, flue gas desulphurization units and other products for nuclear, coal-fired, renewable and combined cycle applications & for the oil and gas industry, we offer Sandvik SAF 2205 duplex stainless steel pipe, seamless and welded pipe and tubing for a variety of applications including OCTG and mechanical tubing, co-extruded clad line pipe, umbilical and control lines, and process piping.

The environment management system of the company is certified according to the requirements of ISO 9001:2008, 14001, 18001 & PED. Few of the major brands we represent are Arcelor Mittal, Sumitomo, Tenaris, Benteler, Jazeera Steel, Hyundai HYSCO, Arabian Pipes Company, Sandvik, Froch, etc. Our materials are approved by Saudi ARAMCO, SABIC, SHELL, ADNOC, GASCO, PDO, KNPC, KOC, QATAR Gas, SGC etc.

L.G. Pipes and Tubes offers a wide range of Sandvik SAF 2205 duplex stainless steel pipe, 316 Seamless Tubing316 Seamless Pipess 316l Seamless Pipe304 Seamless Tube304 Seamless Stainless Steel Tubing & Hydraulic Tube etc. We can meet most ASME, ASTM, AMS, and military specifications, and can cross-reference to most international standards, including full DIN 3.1b, full 3.1/3.2 Certifcation and NACE requirements.

Sandvik SAF 2205 duplex stainless steel pipe Dimensional Range & Standard Specification

Sandvik SAF 2205 (Tube and pipe, seamless)

Datasheet updated 2015-02-16 10:39:33 (supersedes all previous editions)

Sandvik SAF 2205 is a duplex (austenitic-ferritic) stainless steel characterized by:

  • High resistance to stress corrosion cracking (SCC) in chloride-bearing environments
  • High resistance to stress corrosion cracking (SCC) in environments containing hydrogen sulphide
  • High resistance to general corrosion, pitting, and crevice corrosion
  • High resistance to erosion corrosion and corrosion fatigue
  • High mechanical strength – roughly twice the proof strength of austenitic stainless steel
  • Physical properties that offer design advantages
  • Good weldability

Standards

  • UNS S31803, S32205
  • EN number 1.4462
  • EN name X2CrNiMoN 22-5-3
  • W.Nr. 1.4462
  • DIN X2CrNiMoN 22 5 3
  • SS 2377
  • AFNOR Z2.CND22.05.03

Product standards

Seamless tube:
EN 10216-5, NFA 49-217
Seamless and welded tube:
ASTM A789
Seamless and welded pipe:
ASTM A790
Flanges and valves:
ASTM A182
Fittings:
ASTM A182; A815
Plate, sheet and strip:
ASTM A240, EN 10088-2
Bar and shapes:
ASTM A276, A479, EN 10088-3
Forged billets EN 10088-3

Approvals

  • ASME Boiler and Pressure Vessel Code, Section VIII, Div. 1 and Div. 2
  • VdTÜV-Werkstoffblatt 418 (Ferritisch-austenitischer Walz- und Schmiedestahl)
  • NACE MR0175/ISO 15156 (Petroleum and natural gas industries – Materials for use in H2S-containing Environments in oil and gas production – Part 1: General principles for selection of cracking-resistant materials Published:2003)
  • NGS 1606 (Nordic rules for application) valid for SAF 2205 made by Sandvik
  • DNV (Approval of Seamless Ferritic/Austenitic Stainless Steel Tubes and Pipes in Quality Sandvik SAF 2205)
  • ASME B31.3 Process Piping

Chemical composition (nominal) %

C Si Mn P S Cr Ni Mo N
≤0.030 ≤1.0 ≤2.0 ≤0.030 ≤0.015 22 5 3.2 0.18

Forms of supply

Seamless tube and pipe in Sandvik SAF 2205 is supplied in dimensions up to 260 mm (10.2 in.) outside diameter. They are delivered in the solution annealed condition and either white pickled or bright annealed. They can also be delivered cold-worked without subsequent heat treatment.

Other product forms

  • Welded tube and pipe
  • Fittings and flanges
  • Welding wire (MIG, TIG and SAW)
  • Covered electrodes
  • Welding strip and flux for surfacing
  • Strip, annealed or cold-rolled to different degrees of hardness
  • Bar
  • Plate, sheet and wide strip
  • Forged products
  • Cast products

Mechanical properties

The following values apply to material in the solution annealed condition. Tube and pipe with wall thicknesses above 20 mm (0.787 in.) may have slightly lower values. For seamless tubes with a wall thickness <4 mm we guarantee proof strength (Rp0.2) values that are 10% higher than those listed below at 20°C (68°F) and than those listed at higher temperatures. More detailed information can be supplied on request.

At 20 °C (68°F)

Tube and pipe with a wall thickness max. 20 mm (0.79 in.)

Proof strength Tensile strength Elong. Hardness
Rp0.2a Rp1.0a Rm Ab A2″ HRC
MPa MPa MPa % %
Metric units
≥485 ≥500 680-880 ≥25 ≥25 ≤28

Imperial units

Proof strength Tensile strength Elong. Hardness
Rp0.2a Rp1.0a Rm Ab A2″ HRC
ksi ksi ksi % %
≥70 ≥73 99-128 ≥25 ≥25 ≤28

1 MPa = 1 N/mm2
a) Rp0.2 and Rp1.0 correspond to 0.2% offset and 1.0% offset yield strength, respectively.
b) Based on L0 = 5.65 √S0 where L0 is the original gauge length and S0 the original cross-sectional area.

Seamless tube and pipe in the cold-worked condition

Intended for oil and gas production

Proof strength Tensile strength Elong.
Rp0.2 Rm A2″
MPa ksi MPa ksi %
≥895 ≥130 ≥965 ≥140 ≥10

At high temperatures

If Sandvik SAF 2205 is exposed to temperatures exceeding 280°C (540°F), for prolonged periods, the microstructure changes, which results in a reduction in impact strength. This does not necessarily affect the behavior of the material at the operating temperature. For example, heat exchanger tubes can be used at higher temperatures without any problems. Please contact Sandvik for more information. For pressure vessel applications, 280°C (540°F) is required as a maximum according to VdTÜV-Wb 418 and NGS 1606.

Tube and pipe with wall thickness max. 20 mm (0.79 in.)

Temperature Proof strength
Rp0.2
°C MPa
min
Metric units
50 415
100 360
150 335
200 310
250 295
300 280
Temperature Proof strength
Rp0.2
°F ksi
min
Imperial units
120 60.5
200 53.5
300 48.5
400 45.0
500 42.5
600 40.0

According to ASME B31.3 the following design values are recommended for UNS S31803 (Sandvik SAF 2205)

Temperature, °F °C Stress ksi MPa
100 38 30.0 207
200 93 30.0 207
300 149 28.9 199
400 204 27.9 192
500 260 27.2 188
600 316 26.9 185

Physical properties

Density: 7.8 g/cm3, 0.28 lb/in3

Temperature, °C J/(kg °C) Temperature, °F Btu/(lb°F)
Specific heat capacity
20 480 68 0.11
100 500 200 0.12
200 530 400 0.13
300 550 600 0.13
400 590 800 0.14

Thermal conductivity

Temperature,°C 20 100 200 300 400
W/(m °C)
Metric units
Sandvik SAF 2205 14 16 17 19 20
ASTM TP316L 14 15 17 18 20
Temperature, °F 68 200 400 600 800
Btu/(ft h °F)
Imperial units
Sandvik SAF 2205 8 9 10 11 12
ASTM TP316L 8 9 10 10 12
Temperature, °C 30-100 30-200 30-300 30-400
Per °C
Thermal expansion, Metric units 1)
Sandvik SAF 2205 13.0 13.5 14.0 14.5
Carbon steel 12.5 13.0 13.5 14.0
ASTM TP316L 16.5 17.0 17.5 18.0

1) Mean values in temperature ranges (X10-6)

Temperature, °F 86-200 86-400 86-600 86-800
Per °F
Imperial units
Sandvik SAF 2205 7.0 7.5 8.0 8.0
Carbon steel 6.8 7.0 7.5 7.8
ASTM TP316L 9.0 9.5 9.8 10.0

Sandvik SAF 2205 has a far lower coefficient of thermal expansion than austenitic stainless steels and can therefore offer certain design advantages.

Corrosion resistance

General corrosion

In most media, Sandvik SAF 2205 possesses better resistance to general corrosion than steel of type ASTM TP316L and TP317L. The improved resistance of Sandvik SAF 2205 is illustrated by the isocorrosion diagram for corrosion in sulphuric acid, Figure 3, and the diagram showing the corrosion rates in mixtures of acetic and formic acid, Figure 4. Figure 5 shows the isocorrosion diagram for Sandvik SAF 2205 in hydrochloric acid.

Impurities that increase corrosivity are often present in process solutions of acids. If there is a risk of active corrosion, higher alloyed stainless steels should be chosen, e.g. the austenitic grades Sandvik 2RK65 or Sanicro 28, or the super-duplex grade Sandvik SAF 2507.

The PRE number for Sandvik SAF 2205 is compared with other materials in the following table:

Grade % Cr % Mo %N PRE
Sandvik SAF 2205* 22 3.2 0.18 >35
UNS S31803 21.0-23.0 2.50-3.50 0.08-0.20 >30
Alloy 825 20 2.6 29
ASTM TP317L 18 3.5 30
ASTM TP316L 17 2.2 24

* Sandvik SAF 2205 has a chemical composition within UNS S32205, which is optimized within the UNS S31803 range in order to provide a high PRE value.

The ranking given by the PRE number has been confirmed in laboratory tests. This ranking can generally be used to predict the performance of an alloy in chloride containing environments. Because of the high Mo and N contents, the PRE number for Sandvik SAF 2205 is significantly higher than what would be the case with lower Mo and N contents which are still within the limits of UNS S31803.

The results of laboratory tests, to determine the critical temperature for the initiation of pitting (CPT) at different chloride contents are shown in Figure 6. The chosen testing conditions have yielded results that match well with practical experience. Thus, Sandvik SAF 2205 can be used at considerably higher temperatures and chloride contents than ASTM TP304 and ASTM TP316 without pitting. Sandvik SAF 2205 is, therefore, far more serviceable in chloride-bearing environments than standard austenitic steels.

Heat treatment

Tubes are normally delivered in the heat-treated condition. If additional heat treatment is needed due to further processing, the following is recommended.

Solution annealing

1020 – 1100°C (1870-2010°F), rapid cooling in air or water.

Welding

The weldability of Sandvik SAF 2205 is good. Suitable welding methods are manual metal-arc welding with covered electrodes or gas shielded arc welding. Welding should be undertaken within the heat input range 0.5-2.5 kJ/mm. Max. interpass temperature is 250°C (482oF). Preheating or post-weld heat treatment is normally not necessary.

Matching filler metals are recommended in order to obtain a weld metal with optimum corrosion resistance and mechanical properties. For gas-shielded arc welding we recommend Sandvik 22.8.3.L or Sandvik 22.8.3.LSi, developed to give improved welding properties by gas metal arc welding (MIG/MAG).

For manual metal-arc welding, the covered electrode Sandvik 22.9.3.LR is recommended. These filler metals can also be used for welding Sandvik SAF 2205 to carbon steels and stainless steels. The covered electrode Sandvik 23.12.2.LR and the welding wire Sandvik 22.15.3.L, both of type AWS 309 Mo with low carbon content, can also be used.

Fabrication

Bending

The starting force needed for bending is slightly higher for Sandvik SAF 2205 than for standard austenitic grades (ASTM TP304L and TP316L). Sandvik SAF 2205 can be cold-bent to 25% deformation without requiring subsequent heat treatment. For pressure vessel applications in Germany and the Nordic countries, heat treatment may be required after cold deformation in accordance with VdTÜV-Wb 418 and NGS 1606.

Under service conditions where the risk of stress corrosion crackingstarts to increase, heat treatment is recommended even after moderate cold bending, for example, where the material temperature is nearly 150°C (300°F) in an oxygen-bearing, environment with around 100 ppm Cl-.

Heat treatment is carried out in the form of solution annealing (see under Heat treatment) or resistance annealing. Hot bending is carried out at 1100-950°C (2010-1740°F) and should be followed by solution annealing.

SOURCE: www.smt.sandvik.com

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Useful Information:

SAF 2205® is a registered trademark for Sandvik

Alloys UNS Designation ASTM Specification Tensile Strength (min.) Yield Strength 0.2% Offset (min.)
MPa ksi Mpa
304 S30400 A213, A269, A312, A632 515 75 205
304L S30403 A213, A269, A312, A632 485 70 170
304H S30409 A213, A269, A312, A632 515 75 205
310S S31000 A213, A269, A312, A632 515 75 205
316 S31600 A213, A269, A312, A632 515 75 205
316L S31603 A213, A269, A312, A632 485 70 170
316H S31609 A213, A269, A312, A632 515 75 205
317 S31700 A213, A269, A312, A632 515 75 205
317L S31703 A213, A269, A312, A632 485 70 170
321 S32100 A213, A269, A312, A632 515 75 205
347 S34700 A213, A269, A312, A632 515 75 205
Duplex 2205 S31808 A789 620 90 450
400 N04400 B165 480 70 195
600 N06600 B163 550 80 240
625 GR 1 (Annealed) N06625 B444 827 120 414
625 GR 2 (Solution Annealed) N06625 B444 827 120 276
800 N08800 B163 520 75 205
825 N08825 B423 586 85 240

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Other brand manufacturers

stainless steel pipe manufacturers

  • Sumitomo Sandvik SAF 2205 duplex stainless steel pipe | Sumitomo Metals, Japan
  • Nippon Sandvik SAF 2205 duplex stainless steel pipe | Nippon Steel Corporation, Japan
  • Kobe Sandvik SAF 2205 duplex stainless steel pipe | Kobe Special Tube, Japan
  • Sanyo Sandvik SAF 2205 duplex stainless steel pipe | Sanyo Special Steel, Japan
  • Tubacex Sandvik SAF 2205 duplex stainless steel pipe | Tubacex Tubos Inoxidables S.A., Spain
  • Schoeller Sandvik SAF 2205 duplex stainless steel pipe | Schoeller Bleckmann, Austria
  • Seah Sandvik SAF 2205 duplex stainless steel pipe | Seah Steel Corporation, Korea
  • Special Metals alloys Sandvik SAF 2205 duplex stainless steel pipe | Special Metals alloys, USA
  • Sandvik Sandvik SAF 2205 duplex stainless steel pipe | Sandvik, Sweden

 

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