• An ISO 9001 and ISO 14001 Certified Company
Tubotech Stainless Inc

ASTM A789 UNS S31803 Tube

UNS S31803 tubes

What is ASTM A789 UNS S31803 Tube?

UNS S31803 is a widely used material to fabricate tubes belonging to the duplex stainless steel alloy family. It is a combination of both the austenitic as well as ferritic stainless steel; it has great strength, corrosion and stress corrosion cracking features making it suitable for demanding services.

UNS S31803 tubes are extensively utilized for various applications in the areas like oil drilling corporations, petrochemical industries, marine application, and electric power industries. This alloy contain’s medium carbon steels and a mix of 50 % ferrite and 50% austenite for excellent mechanical properties and weldability. In addition, it has fairly good pitting, crevice corrosion and chloride induced stress corrosion cracking. Known by the name 2205 stainless steel.

What is ASTM A789 UNS S31803?

The ASTM A789 S31803 Seamless Tube has a duplex steel material specification and the alloy contains added chromium and molybdenum. The A789 UNS S31803 has high strength and shows good resistance to corrosion. These tubes are a great choice for various high temperature applications, which would require extensive welding at the time of installation.

The SA789 S31803 Bright Annealed Tubes have good resistance to chloride-ion related stress corrosion cracking, and can be used in marine, food processing, automobile and various other industries. They are quite strong and can be used for high pressure applications.

Table of Contents


Specification of UNS S31803 tubes

ASME SA 789 UNS S31803 Tubing Manufacturer in India

ASTM A789 UNS S31803 Tube Specifications

UNS S31803 tubes specification

 

 

 

A789 UNS S31803 tube sizes

A789 UNS S31803 tube sizes

  • size: 6 - 24”
  • OD: 6.0 - 630 mm
  • seamless tube size: 1/2 to 8inch
SA 789 UNS S31803 tube wall thickness

SA 789 UNS S31803 tube wall thickness

  • Average wall thickness
  • 0.5 – 20mm
  • thin wall tubing

 

 

mechanical test of A789 S31803 boiler tube

mechanical test of A789 S31803 boiler tube

  • Hardness test
  • 100% PMI tested
  • Reverse flattening test
  • Flange test
  • Flaring test
  • Tension test
UNS S31803 heat exchanger tube manufacturing type

UNS S31803 heat exchanger tube manufacturing type

  • welded tube
  • seamless tube
  • ERW tubing

 

 

European standard 

European standard 

  • EN 10216-5
  • EN 10296-2
  • EN 10217-7
  • EN 10297-2
  • EN 10312
Duplex UNS S31803 tubing application

Duplex UNS S31803 tubing application

  • Boilers
  • Chloride environments
  • Heat exchangers
  • gas and Fluid transport
  • Sea water
  • Superheaters

 

 

ASTM A789 UNS S31803 Schedule

ASTM A789 UNS S31803 Schedule

  • SCH 10
  • Schedule 5S/ 5
  • SCH 10S
  • SCH 40S
  • SCH 30
  • SCH 20
  • SCH 40
  • SCH 120
  • SCH 80S/80
  • Standard (SCH STD)
  • SCH 160
  • Double Extra Strong (XSS)
  • Ex-Standard (XS)
ASTM A789 Gr. UNS NO. S31803 meet standards

ASTM A789 Gr. UNS NO. S31803 meet standards

  • ASME B36.19M
  • DIN 17458
  • NSF 61
  • EN 10217-7
  • EN 10216 – 2
  • EN 10216 – 5
  • ASME B36.19
  • EN 10088-3
  • EN 10088-2
  • DIN 17456

 

 

SA789 S31803 tubes surface finish and treatments

SA789 S31803 tubes surface finish and treatments

  • Pickled
  • Precleaned
  • Cleaned
  • Passivated
ASTM A789 S31803 bright annealed tube manufacturing process

ASTM A789 S31803 bright annealed tube manufacturing process

  • Hot Finished
  • Cold Finished

 

 

SA 789 UNS S31803 tube value added services

SA 789 UNS S31803 tube value added services

  • Beveling
  • Threading
  • Cutting
  • Polishing
ASTM A789 Gr. UNS S31803 tube types

ASTM A789 Gr. UNS S31803 tube types

  • U bend tube
  • straight tubing

 

 

icon5

A789 S31803 heat exchanger tube finish

  • 600 grit
  • Annealed & Pickled (A&P)
  • Solution annealed
  • Mirror
  • 400 grit
  • polished 180 grit
  • No.4
  • 320 grit
  • Bright Annealed
  • BA polishing
  • 2B
  • Cold Drawn
  • Matt finish
icon11

List of leading SA 789 S31803 tubing manufacturers

  • Gauteng , Steelmo (South Africa)
  • Luxembourg , ArcelorMittal (Europe)
  • Outokump (Europe)
  • Nippon Yakin Kogyo Co., Ltd., Japan
  • Jindal steel pipe, India
  • Tenaris, Luxembourg (Europe)
  • JFE, Japan
  • Sosta, Italy
  • SMM Oman
  • Sumitomo Metal , Nippon Steel, Japan
  • Jiangsu Shagang, China

Buy ASTM A789 S31803 Seamless and Welded Tube in Custom Sizes

Sizes of SA789 S31803 Bright Annealed Tubes

Tube WT Milimeter Inch Sch OD Milimeter Kilogram/m
2.087 3/4 40S 26.067 1.071
3.091 3/4 80S 26.067 2.023
2.077 1 10S 33.040 2.013
3.038 1 40S 33.040 2.054
4.055 1 80S 33.040 3.029
6.0352) 1 160 33.040 4.030
2.077 1¼ 10S 42.016 2.073
3.056 1¼ 40S 42.016 3.044
4.085 1¼ 80S 42.016 4.053
1.065 1/4 10S 13.072 0.050
2.024 1/4 40S 13.072 0.064
3.002 1/4 80S 13.072 0.081
1.065 3/8 10S 17.015 0.064
2.031 3/8 40S 17.015 0.086
3.020 3/8 80S 17.015 1.012
2.011 1/2 10S 21.034 1.002
2.077 1/2 40S 21.034 1.029
3.073 1/2 80S 21.034 1.065
2.011 3/4 10S 26.067 1.030
6.0352) 1¼ 160 42.016 5.069
2.077 1½ 10S 48.026 3.016
3.068 1½ 40S 48.026 4.011
5.008 1½ 80S 48.026 5.049
2.077 2 10S 60.033 3.099
3.091 2 40S 60.033 5.052
5.054 2 80S 60.033 7.060
8.0742) 2 160 60.033 11.029
3.005 2½ 10S 73.003 5.035
5.016 2½ 40S 73.003 8.077
7.001 2½ 80S 73.003 11.059
3.005 3 10S 88.090 6.056
5.049 3 40S 88.090 11.047
7.062 3 80S 88.090 15.051
11.0132) 3 160 88.090 21.067
3.005 3½ 10S 101.060 7.053
5.074 3½ 40S 101.060 13.078
8.008 3½ 80S 101.060 18.092
3.005 4 10S 114.030 8.050
6.002 4 40S 114.030 16.032
8.056 4 80S 114.030 22.067
13.0492) 4 160 114.030 34.005
6.055 5 40S 141.030 22.010
9.053 5 80S 141.030 31.044
15.0882) 5 160 141.030 49.087
3.04 6 10S 168.028 14.004
7.011 6 40S 168.028 28.069
10.097 6 80S 168.028 43.021
14.027 6 120 168.028 54.075
18.0262) 6 160 168.028 68.059
8.018 8 40S 219.008 43.020
12.07 8 80S 219.008 65.063
18.023 8 120 219.008 91.030
23.0012) 8 160 219.008 112.097

A790 S31803 Seamless Tube Equivalent

Grade UNS No ASTM Old British Swedish SS Euronorm Japanese JIS
BS En No Name
2205 UNS S31803 ASTM A790 ASTM A789 ASTM A928 318S13 – 2377 1.4462 X2CrNiMoN22-5-3 SUS 329J3L

Offer ASME SA 789 S31803 Ferritic and Austenitic Stainless Steel Tubing for General Service, Refer Properties

Physical Properties of A789 UNS S31803 welded tube

Grade Density (kg/meter3) Elastic Modulus (GPa) Mean Co-efficent of Thermal Expansion (μm/meter/°C) Specific Heat 0-100°C ( J/kg.K) Thermal Conductivity (W/m.K) Electrical Resistivity (nΩ.m)
0 to 100°C 0 to 315°C 0 to 538°C at 100°C at 500°C
UNS S31803 782 190 13.7 14.2 - 418 19 - 850

Mechanical Properties of SA 789 UNS S31803 ERW Tube

Tensile Strength,min. Yield Strength,min. Elongation,min. Hardness Brinell, max
Mpa Mpa % HB
620 450 25 290

SA 789 S31803 coil tubing Chemical Composition

UNS S31803

C ≤0.030%

Mn ≤2.00%

P ≤0.030%

S ≤0.020%
Si ≤1.00%

Ni 4.5-6.5%

Cr 21.0-23.0%

Mo 2.5-3.5%

Supplier Of ASTM A789 Gr. UNS NO. S31803 Tube Furnished With Heat-treated Condition, Refer Tolerance

ASTM A789 S31803 condenser tube Tolerance

Nominal pipe size up to 4 = ± 0.79 milimeter | 5 thru 8 = + 1.58 mm / - 0.79 milimeter 10 thru 18 = + 2.37 mm / - 0.79 milimeter | 20 thru 24 = + 3.18 mm / - 0.79 milimeter
Wall Thickness All Dia = - 12.5% + tolerance not specified Weight Weight = + 10% / - 1.5% Length + 6.40 mm / - 0 milimeter
Get ASTM A789 Material Online in Various Shapes and Forms like Coil and Straight

ASME SA 789 UNS S31803 Tubing Types

A789 UNS S31803 welded tube

A789 UNS S31803 welded tube

SA 789 UNS S31803 ERW tube

SA 789 UNS S31803 ERW tube

SA 789 S31803 coil tubing

SA 789 S31803 coil tubing

ASTM A789 S31803 condenser tube

ASTM A789 S31803 condenser tube

SA789 S31803 bright annealed tubes

SA789 S31803 bright annealed tubes

ASTM A789 Gr. UNS NO. S31803 heater tubes

ASTM A789 Gr. UNS NO. S31803 heater tubes

ASTM A789 UNS S31803 heat exchanger tubes

ASTM A789 UNS S31803 heat exchanger tubes

ASTM A789 Gr. UNS S31803 cold drawn seamless tube

ASTM A789 Gr. UNS S31803 cold drawn seamless tube

ASTM A789M S31803 U-tubes

ASTM A789M S31803 U-tubes

ASTM A789 UNS S31803 Tube Weight

Dimensions Wall Dimensions Weight per Weight per Wall
(mm) (mm) (mm) metre (kg) metre (kg) (mm)
15 * 15 1.20 40 *40 0.53 2.45 2.00
12.7 * 12.7 1.20 40 *40 0.44 1.49 1.20
20 * 20 1.20 50 *50 0.71 2.32 1.50
25 * 25 1.20 60 *60 0.92 3.71 2.00
30 * 30 1.50 100 * 100 1.37 6.40 2.00
12.7 * 12.7 1.50 40 *40 0.55 1.85 1.50
15 * 15 1.50 40 *40 0.65 3.75 3.00
20 * 20 2.00 50 *50 1.19 4.65 3.00
25 * 25 2.00 70 *70 1.49 6.53 3.00
30 * 30 2.00 100 * 100 1.84 9.53 3.00
20 * 20 1.50 50 *50 0.88 3.08 2.00
25 * 25 1.50 60 *60 1.14 5.49 3.00
30 * 30 1.20 80 *80 1.10 7.53 3.00
25 * 25 3.00 80 *80 2.20 4.98 2.00

A789 UNS S31803 Heat Exchanger Tubes Temperature Range

Product Temperature Range
 UNS S31803 Tubing Up to 600°F (316°C)

ASTM A789 UNS S31803 Tube Pressure Rating

Tube O.D.
(In.)		 Wall Thickness Of Tube (Inches)
Working Pressure (Psig)
.120 .095 .028 .065 .035 .083 .049 .109
5/16       7300 3700   5400  
1/8     7900   10100      
3/8       6100 3100   4400  
3/4   4600   3000   4000 2200  
1/4     3700 9500 4800   7000  
1 4300 3400   2200   2900   3900
1/2       4400 2300   3200  

A789 S31803 Heat Exchanger Tubes Testings

  • Reverse Flattening Test
  • Flaring Test
  • Flange Test
  • Nondestructive Testing
  • Moisture testing
  • PMI Test

ASTM A789 UNS S31803 Tube Price List

Price list Price in USD Price in UAE Dirham
ASTM A789 UNS S31803 Tube Size: 6.35 x 0.35 mm US $ 3.50 UAE 12.86
A789 S31803 Tube Size: 25.4 x 1.0 mm US $ 10.00 UAE 36.73

ASME SA 789 UNS S31803 Tubing Coatings

ASME SA 789 UNS S31803 Tubing Coatings

SA789 S31803 Condenser Tube Dimensions

Nominal Size (Inches) Inside Diameter (ID) [mm] Outside Diameter (OD) [mm] Wall Thickness (WT) [mm]
3" 73.20 76.20 1.50
1/4" 5.65 6.35 0.35
1" 23.90 25.40 0.75
3/8" 8.83 9.53 0.35
3/4" 18.05 19.05 0.50
1/2" 11.70 12.70 0.50
1-1/2" 36.10 38.10 1.00
1-1/4" 30.25 31.75 0.75
2-1/2" 60.50 63.50 1.50
2" 48.80 50.80 1.00
4" 97.60 101.60 2.00

ASTM A789 UNS S31803 Tube Export Location and Time of Delivery

Variation in Cost

5 % Extra
Country Name Time Of Delivery in Days
Singapore  8
Thailand  7
South Korea  7
Japan  7
Taiwan  15
Argentina  45
Malaysia  7
Taiwan  15
Bolivia  45
Mayanmar  25
Indonesia  7
Bangladesh  14
Brazil  45-60
Maldives  7
Vietnam  14
Sri Lanka  5
Cambodia  9
Chile  45