Stainless&Duplex stainless expert
Phone: +86-317-628 7569 E-mail: Alloypipefitting@gmail.com

Stainless Steel Tubes/

ASTM A789 S31803 Tubes SA789 S31803 Stainless Steel Tubes

Huitong Tube is a specialized Manufacturer of S31803 Tube and S31803 Pipe. ASTM A789 SA789 S31803 Tubes, S31803 Duplex Tube, S31803 Duplex Pipe, ASTM A790 S31803 Pipe, ASME SA 790 S31803 Pipe. S31803 Stainless Steel is a 22% chromium, 3% molybdenum, 5-6% nickel, nitrogen alloyed duplex stainless steel with high general, localized, and stress corrosion resistance properties in addition to high strength and excellent impact toughness. Table of content S31803 Tubes and S31803 Pipe Properties and Character S31803 Tubes Chemical Composition S31803 Tubes S31803 Pipe Mechanical Properties S31803 Tubes S31803 Pipe Physical Properties S31803 Tubes S31803 Pipe Standard Specification S31803 Tubes S31803 Pipes Marking and Packing S31803 Tubes Ordering Information ASTM A789 Duplex Steel Chemical Composition ASTM A789 Mechanical Properties ASTM A789 Heat Treatment…

  • Product Details

Huitong Tube is a specialized Manufacturer of S31803 Tube and S31803 Pipe. ASTM A789 SA789 S31803 Tubes, S31803 Duplex Tube, S31803 Duplex Pipe, ASTM A790 S31803 Pipe, ASME SA 790 S31803 Pipe. S31803 Stainless Steel is a 22% chromium, 3% molybdenum, 5-6% nickel, nitrogen alloyed duplex stainless steel with high general, localized, and stress corrosion resistance properties in addition to high strength and excellent impact toughness.

Table of content

S31803 Tubes and S31803 Pipe Properties and Character

ASME SA789 S31803 Stainless Steel Tubes provides pitting and crevice corrosion resistance superior to 316L or 317L austenitic stainless steel 317L fitting 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 stainless steel.The advantage of a duplex structure is that it combines the favorable qualities of a ferritic alloy stress corrosion cracking resistance and high strength with austenitic alloy ease of fabrication and corrosion resistance.

Duplex Steel ASTM A789 S31803 is a nitrogen enhanced duplex stainless steel that was developed to combat common corrosion problems encountered with the 300 series stainless steel. “Duplex” describes a family of stainless steel that are neither fully austenitic, like 304 stainless, nor purely ferritic, like 430 stainless steel. The structure of S31803 duplex stainless steel consists of austenitic pools surrounded by a continuous ferritic phase. In the annealing condition, S31803 contains approximately 40-50% ferrite. Often referred to as the workhorse grade, S31803 is the most widely used grade in the duplex stainless steel tube.

Usage of S31803 Stainless Steel Pipe should be limited to temperatures below 600 °F.  Extended elevated temperature exposure can embrittle S31803 stainless steel.

S31803 Tubes Chemical Composition


EN-10216-5 1.4462 Composition %:

CSiMnPSCrMoNiNCu
max. 0,03max. 1,00max. 2,00max. 0,035max. 0,01521,00 – 23,002,50 – 3,504,50 – 6,500,10-0,22

ASTM A789 ASTM A790 S32205 2205 Duplex Tubing Composition %:

CSiMnPSCrMoNiNCu
max. 0,03max. 1,00max. 2,00max. 0,030max. 0,02022,00 – 23,003,0 – 3,54,5 – 6,500,14-0,20

ASTM A789 ASTM A790 S31803 Stainless Steel Tubing Composition %:

CSiMnPSCrMoNiNCu
max. 0,03max. 1,00max. 2,00max. 0,030max. 0,02021,00 – 23,002,5 – 3,54,50 – 6,500,08-0,20

S31803 Tubes S31803 Pipe Mechanical Properties

   Tensile Strength Yield Strength    
AlloyUNSSpec.MPaksiMPaksiElongation in 2 in. (min.) %Grain Size Req.Max. Hardness
Duplex 2205S32205A789, A790655954857025290HBW,
30* HRC
Duplex S31803S31803A789, A790620904506525290HBW,
30* HRC

S31803 Stainless Steel Tube Physical Properties

AlloyUNSSpec.Density
kg/dm³
Modulus of Elasticity (x106 psi)Mean Coefficient of Thermal Expansion (IN./IN./°F x 10-6)Thermal Conductivity (BTU-in/ ft2-h-°F)
Duplex 2205S32205A789, A7907.827.57.6180
Duplex S31803S31803A789, A7907.827.57.6180

S31803 Tubes Standard Specification

S31803 Stainless Steel Pipe Range

AlloyUNS DesignationWerkstoff NR.Specifications*
2205S318031.4462ASTM A789/ ASME SA789, ASTM A790 / ASMESA790, EN 10216 – 5

ASTM Standards:
A480/A480M Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip
A1016/A1016M Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel Tubes
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)

SAE Standard:
SAE J 1086 Practice for Numbering Metals and Alloys (UNS)

S31803 Pipe Information

ProductsODWallLengths and/or coilsGradesODWallLengths
Heat Exchanger Tubes & Condensers Tubes Specifications: ASTM A789 and ASME SA7893/16″ (4.76 mm) to 12 ” (323.85mm) Metric sizes available0.020″ (0.51 mm) to 0.220″ (5.59 mm)Random or cut lengths up to Customer RequiredDuplex 2205±10%
Standard
Item
ASTM A789ASTM A790EN 10216-5
GradeS31803 S32205 S32750S31803 S32205 S327501.4301 1.4307 1.4948  1.4315
1.4401 1.4404 1.4571  1.4541
1.4941 1.4845 1.4449  1.4438
1.4550 1.4912 1.4462  1.4410
Yield Strength
(Mpa)
≥450;≥485;≥550≥450;≥450;≥550
Tensile Strength
(Mpa)
≥620;≥655;≥800≥620;≥655;≥800
Elongation(%)≥25;≥25;≥15≥25;≥25;≥15
Hydrostatic TestThe Hydrostatic Test shall be in accordance with ASTM A1016.Could be replaced by ECT.The Hydrostatic Test shall be in accordance with ASTM A999.Could be replaced by ECT.The hydrostatic test shall be carried out at a test pressure of 7MPa or
at a test pressure calculated using the following formula
P=2St/D S=70%Rp0.2
Intergranular Corrosion TestUsually use Pitting Corrosion Test.Usually use Pitting Corrosion Test.EN ISO 3651-2 (Optional)
Eddy Current TestCould be replaced by Hydrostatic Test.Could be replaced by Hydrostatic Test.EN 10246-3

S31803 Tubes S31803 Pipes Marking and Packing

In addition to the marking prescribed in Specification A1016/A1016M, the marking shall indicate whether the tubing is seamless or welded and the wall designation (average wall or minimum wall).

ASTM A789 / ASME SA789 covers grades of average wall thickness, or, if specified on the order, minimum wall thickness, of stainless steel tubing for services requiring general corrosion resistance, with particular emphasis on resistance to stress corrosion cracking. These steels are suscep- tible to embrittlement if used for prolonged periods at elevated temperatures.

The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. Within the text, the SI units are shown in brackets. The inch-pound units shall apply unless the M designation of this specification is specified in the order.

S31803 Tubes Ordering Information

Orders for product under this specification should in- clude the following, as required, to describe the desired material adequately:

Quantity (feet, metres, or number of lengths),

Name of product (seamless or welded tubes),

Grade

Size (outside diameter and average wall thickness, unless minimum wall thickness is specified),

Length (specific or random),

Optional requirements (for product analysis, see Section for hydrostatic or nondestructive electric test, see Section 10

Test report required (see the Inspection section of Specification A1016/A1016M

Specification designation, and

Special requirements.

General Requirements

Product furnished under this specification shall conform to the applicable requirements of specification A1016/ A1016M, unless otherwise provided herein.

Manufacture

The tubes shall be made by the seamless or welded process with no filler metal added.

ASTM A789 Duplex Steel Chemical Composition

The steel shall conform to the chemical requirements prescribed in Table 1.

DesignationCMnPSSiNiCrMoNCuOthers
S312000.0302.000.0450.0301.005.5–6.524.0–26.01.20–2.000.14–0.20. . .. . .
S312600.0301.000.0300.0300.755.5–7.524.0–26.02.5–3.50.10–0.300.20
–0.80
W 0.10
–0.50
S315000.0301.20
–2.00
0.0300.0301.40
–2.00
4.3–5.218.0–19.02.50–3.000.05–0.1. . .. . .
S318030.0302.000.0300.0201.004.5–6.521.0–23.02.5–3.50.08–0.20. . .. . .
S320010.0304.00
–6.00
0.0400.0301.001.0–3.019.5–21.50.600.05–0.171.00. . .
S320030.0302.000.0300.0201.003.0-4.019.5-22.51.50-2.000.14-0.20. . .. . .
S321010.0404.0-6.00.0400.0301.001.35-1.7021.0-22.00.10-0.800.20-0.250.10
-0.80
. . .
S322020.0302.000.0400.0101.001.00–2.8021.5–24.00.450.18–0.26. . .. . .
S322050.0302.000.0300.0201.004.5–6.522.0–23.03.0–3.50.14–0.20. . .. . .
S323040.0302.500.0400.0401.003.0–5.521.5–24.50.05–0.600.05–0.200.05
–0.60
. . .
S325060.0301.000.0400.0150.905.5–7.224.0–26.03.0–3.50.08–0.20. . .W 0.05
–0.30
S325200.0301.500.0350.0200.805.5–8.023.0–25.03.–5.0.20–0.350.50
–3.00
. . .
S325500.041.500.0400.0301.004.5–6.524.0–27.02.9–3.90.10–0.251.50
–2.50
. . .
S327070.0301.500.0350.0100.505.5–9.526.0–29.04.0–5.00.30–0.501.0 maxCo 0.5
–2.0
S327500.0301.200.0350.0200.806.0–8.024.0–26.03.0–5.00.24–0.320.50. . .
S327600.0301.000.0300.0101.006.0–8.024.0–26.03.0–4.00.20–0.300.50
–1.00
W 0.50
–1.00
S328080.0301.100.0300.0100.507.0–8.227.0–27.90.80–1.200.30–0.40. . .W 2.10
–2.50
S329000.081.000.0400.0300.752.5–5.023.0–28.01.00–2.00. . .. . .. . .
S329060.0300.80
–1.50
0.0300.0300.805.8–7.528.0 –30.01.50–2.600.30–0.400.80. . .
S329500.0302.000.0350.0100.603.5–5.226.0–29.01.00–2.500.15–0.35. . .. . .
S332070.0301.500.0350.0100.806.0–9.029.0–33.03.0–5.00.40–0.601.0. . .
S392740.0301.000.0300.0200.806.0–8.024.0–26.02.5–3.50.24–0.320.20
–0.80
W 1.50
–2.50
S392770.0250.800.0250.0020.806.5–8.024.0–26.03.00–4.000.23–0.331.20
–2.00
W 0.80
–1.21
S820110.0302.0
–3.0
0.0400.0201.001.00–2.0020.5–23.50.10–1.000.15–0.270.50. . .
S824410.0302.50
–4.00
0.0350.0050.703.0–4.523.0–25.01.00–2.000.20–0.300.10
–0.80

A Maximum, unless a range or minimum is indicated. Where ellipses (…) appear in this table, there is no minimum and analysis for the element need not be determined or reported.
B Designation established in accordance with Practice E527 and SAE J1086.
C % Cr + 3.3 × % Mo + 16 × % N $ 41.
D % Cr + 3.3 × % Mo + 16 × % N $ 40.

Product Analysis

1. An analysis of either one billet or one length of flat-rolled stock or one tube shall be made from each heat. The chemical composition thus determined shall conform to the requirements specified.

2. A product analysis tolerance (see the annex table on Chemical Requirements (Product Analysis Tolerances) in Specification A480/A480M) shall apply. The product analysis tolerance is not applicable to the carbon content for material with a specified maximum carbon of 0.04 % or less.

3. If the original test for product analysis fails, retests of two additional billets, lengths of flat-rolled stock, or tubes shall be made. Both retests for the elements in question shall meet the requirements of this specification; otherwise, all remaining material in the heat shall be rejected or, at the option of the producer, each billet or tube may be individually tested for acceptance. Billets, lengths of flat-rolled stock, or tubes that do not meet the requirements of this specification shall be re- jected.

NOTE 1—For flange and flaring requirements, the term lot applies to all tubes prior to cutting of the same nominal size and wall thickness that are produced from the same heat of steel. When final heat treatment is in a batch-type furnace, a lot shall include only those tubes of the same size and from the same heat that are heat treated in the same furnace charge. When the final heat treatment is in a continuous furnace, or when heat treated condition is obtained directly by quenching after hot forming, the number of tubes of the same size and from the same heat in a lot shall be determined from the size of the tubes as prescribed in Table 3.

NOTE 2—For tension and hardness test requirements, the term lot applies to all tubes prior to cutting, of the same nominal diameter and wall thickness that are produced from the same heat of steel. When final heat treatment is in a batch-type furnace, a lot shall include only those tubes of the same size and the same heat that are heat treated in the same furnace charge. When the final heat treatment is in a continuous furnace, or when heat treated condition is obtained directly by quenching after hot forming, a lot shall include all tubes of the same size and heat, heat treated in the same furnace at the same temperature, time at heat, and furnace speed, or all tubes of the same size and heat, hot formed and quenched in the same production run.

ASTM A789 Mechanical Properties

1. Tension Tests—One tension test shall be made on a specimen for lots of not more than 50 tubes. Tension tests shall be made on specimens from two tubes for lots of more than 50 tubes (see Note 2).
2. Flaring Test (for Seamless Tubes)—One test shall be made on specimens from one end of one tube from each lot (see Note 1) of finished tubes. The minimum expansion of the inside diameter shall be 10 %.
3. Flange Test (for Welded Tubes)—One test shall be made on specimens from one end of one tube from each lot (see Note1) of finished tubes.
4. Hardness Test—Brinell hardness tests or Rockwell hardness tests shall be made on specimens from two tubes from each lot (see Note 2).
5. When more than one heat is involved, the tension, flaring, flanging, and hardness test requirements shall apply to each heat.
6. Reverse Flattening Test—For welded tubes, one reverse flattening test shall be made on a specimen from each 1500 ft [450 m] of finished tubing.

Tensile Strength and Hardness Requirements

11.1 The material shall conform to the tensile and hardness properties prescribed in Table 4.

GradeTensile strength, min., ksi [MPa]Yield strength, min., ksi [MPa]Elongation in 2 in., or 50mm, min, %Hardness, Max Brinell
S3180390 [620]65 [450]25290
S3220595 [655]70 [485]25290
S3150092 [630]64 [440]30290
S32550110 [760]80 [550]15297
S31200100 [690]65 [450]25280
S31260100 [690]65 [450]25290
S3200190 [620]65 [450]25290
S32304100 [690]65 [450]25290
S32750116 [800]80 [550]15310
S32760109 [750]80 [550]25300
S32950100 [690]70 [480]20290
S32520112 [770]80 [550]25310

For tubing smaller than 1⁄2 in. [12.7 mm] in outside diameter, the elongation values given for strip specimens in Table 4 shall apply. Mechanical property requirements do not apply to tubing smaller than 1⁄8 in. [3.2 mm] in outside diameter or with walls thinner than 0.015 in. [0.4  mm].
Prior to A789/A789M–04, the values for S32003 were 90 ksi tensile strength and 65 ksi yield strength.

Hydrostatic or Nondestructive Electric Test

1 Each tube shall be subjected to the nondestructive electric test or the hydrostatic test. The type of test to be used shall be at the option of the manufacturer, unless otherwise specified in the purchase order.

2. The hydrostatic test shall be in accordance with Speci- fication A1016/A1016M, except that in the calculation of the hydrostatic test pressure 64000(441.2) shall be substituted for 32000(220.6).

ASTM A789 Heat Treatment

All tubes shall be furnished in the heat-treated condition in accordance with the procedures shown in Table 2. For seamless tubes, as an alternate to final heat treatment in a continuous furnace or batch-type furnace, immediately follow- ing hot forming while the temperature of the tubes is not less than the specified minimum solution treatment temperature, tubes may be individually quenched in water or rapidly cooled by other means.

Table.2 Heat Treatment

UNS DesignationTemperatureQuenching
S318031870-2010 °F [1020-1100°C]Rapid cooling in air or water
S322051870-2010 °F [1020-1100°C]Rapid cooling in air or water
S315001800-1900 °F [980-1040°C]Rapid cooling in air or water
S325501900 °F [1040°C] min.Rapid cooling in air or water
S312001920-2010 °F [1050-1100°C]Rapid cooling in water
S312601870-2010 °F [1020-1100°C]Rapid cooling in water
S320011800-1950 °F [982-1066°C]Rapid cooling in air or water
S320031850-2050 °F [1010-1120°C]Rapid cooling in air or water
S321011870 °F minQuenched in water or Rapidly cooling in other means
S322021870-1975 °F [1020-1080°C]Rapid cooling in air or water
S325061870-2050 °F [1020-1120°C]Rapid cooling in air or water
S323041700-1920 °F [925-1050°C]Rapid cooling in air or water
S327501880-2060 °F [1025-1125°C]Rapid cooling in air or water
S327602010-2085 °F [1100-1140°C]Rapid cooling in air or water
S329501820-1880 °F [990-1025°C]Rapid cooling in water
S325201975-2050 °F [1080-1120°C]Rapid cooling in air or water

Permissible Variations in Dimensions

1 Variations in outside diameter, wall thickness, and length from those specified shall not exceed the amounts prescribed in Table 5.
2 The permissible variations in outside diameter given in Table 5 are not sufficient to provide for ovality in thin-walled tubes, as defined in the table. In such tubes, the maximum and minimum diameters at any cross section shall deviate from the nominal diameter by no more than twice the permissible variation in outside diameter given in Table 5; however, the mean diameter at that cross section must still be within the given permissible variation.

Surface Condition

All tubes shall be free of excessive mill scale, suitable for inspection. A slight amount of oxidation will not be considered as scale. Any special finish requirements shall be subject to agreement between the manufacturer and the purchaser.

S31803 Tube S31803 Pipes Export Countries

MIDDLE EAST 
 Saudi Arabia
  Iran
  Iraq
  UAE
  Qatar
  Bahrain
  Oman
  Kuwait
  Turkey
  Yemen
  Syria
  Jordan
  Cyprus
AFRICA
  Nigeria
  Algeria
  Angola
  South Africa
  Libya
  Egypt
  Sudan
  Equatorial Guinea
  The Republic Of Congo
  Gabon

NORTH AMERICA
  USA
  Canada
  Mexico
  Panama
  Costa Rica
  Puerto Rica
  Trinidad And Tobago
  Jamaica
  Bahamas
  Denmark
EUROPE  
Russia
  Norway
  Germany
  France
  Italy
  UK
  Spain
  Ukraine
  Netherland
  Belgium
  Greece
  Czech Republic
  Portugal
  Hungary
  Albania
  Austria
  Switzerland
  Slovakia
  Finland
  Ireland
  Croatia
  Slovenia
  Malta
ASIA  
India
  Singapore
  Malaysia
  Indonesia
  Thailand
  Vietnam
  South Korea
  Japan
  Sri Lanka
  Maldives
  Bangladesh
  Mayanmar
  Taiwan
  Cambodia
SOUTH AMERICA 
 Argentina
  Bolivia
  Brazil
  Chile
  Venezuela
  Colombia
  Ecuador
  Guyana
  Paraguay
  Uruguay

General Properties
Application
Standards
Chemical Composition
Resistance to Corrosion
Physical Properties
Mechanical Properties
Structure
Welding
Processing
Machinability
Difference Between Duplex Steel S31803/S32205 and 316L
ASTM A789 ASME SA 789 S31803 S32205 S32101 S32750 S32760 S32304 S31500 S31260 Seamless Tubes
ASTM A790 ASME SA790 S31803 S32205 S32101 S32750 S32760 S32304 S31500 S31260 Seamless Pipe
EN 10216-5 1.4462 1.4362 1.4162 1.4410 1.4501 Seamless Tubes

1. Duplex Stainless Steel Pipe
2. Duplex Stainless Steel
3. Super-Duplex Stainless Steel
4. Principle of Duplex Stainless Steel
5. How the Austenite Ferrite Balance Achieved
6. Corrosion Resistance of Duplex Stainless Steel
7. Stress Corrosion Cracking SCC of Duplex Stainless Steel
8. Barrier to Using Duplex Stainless Steel
9. Duplex Stainless Steel Grades Comparison Table
10. S32101 | S31803 | S32205 | S32304 | S32750 | S32760
11. ASTM A789/A789M
12. ASTM A 790/A 790M
13. Duplex Stainless Steel Pipe
14. Austenitic-Ferritic Stainless Steel Pipe
15. Super-Duplex Stainless Steels and their characteristics
16. 2507 S32750 Duplex Steel Pipe
17. S31803 Stainless Steel Pipe
18. S32304(1.4362) Duplex Steel
19. S32205 Stainless Steel Pipe
20. 1.4462 Stainless Steel Pipe
21. Use of stainless steel under high temperature condition refer table
22. ASTM A789 S31803 Duplex Stainless Steel Pipe
23. ASTM A789 S32205 Duplex Stainless Steel Pipe
24. Duplex Stainless Steel Pipe Specification
25. ASTM A789 vs ASTM A790

Leave a Reply

Leave a message