ASTM a789 uns s31803 tube

ASTM A789 UNS s31803 tube

ASTM International offers many specifications for super duplex stainless steels as per their composition, properties, and uses in specific applications. A789 is the ASTM specification for super duplex stainless steel’s seamless and welded tubes. Duplex got is the name for having the dual microstructure of ferrite and austenite steel having all their properties.

ASTM A789 UNS S31803 is duplex stainless steel with 21 to 23% chromium to have high corrosion resistance. Also, it has 4.5 to 6.5% nickel, 2.5 to 3.5% molybdenum and 2% manganese to be strong. Hence it can withstand high pressure and temperature working environments.

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Find trustworthy SA 789 UNS s31803 tubing suppliers in UAE at a fair price; learn more about ASTM a789 here.

ASTM A789 UNS S31803 specification


ASTM A789 UNS S31803 Tube Specification

A789 UNS S31803 round tube dimensions SA 789 UNS S31803 tube Wall thickness UNS S31803 welded tube Length
  • OD: 6.0-630mm
  • SA789 S31803 welded tube size: 6” to 24”
  • A789 S31803 seamless tube size: 1/2” to 8”
  • 0.5 – 20mm
  • Average wall thickness
  • ASTM A789 S31803 thin wall tubing
  • 5.8 meters (20 feet)
  • A789 S31803 duplex maximum length : 25000mm
  • Custom/ cut to size
  • 6 meters (21 feet)
  • 17-24 feet

For custom length please contact below listed ASTM A789 UNS S31803 Tube suppliers, above stockists can supply material in Sch 5/10 to XXS in Saudi Arabia & UAE

Required list of A789 S31803 heat exchanger tube mechanical test American standard for OD and thickness ASTM A789 S31803 bright annealed tube manufacturing process
  • Reverse flattening test
  • 100% PMI tested
  • Flange test (for A789 UNS S31803 welded tube)
  • Hardness test
  • Tension test
  • Flaring test (for ASTM A789M seamless tube)
  • ASTM A999 / A999M
  • A1016 / A1016M
  • DIN EN ISO 1127
  • ASTM A789M Hot Finished Seamless Tube
  • A789 S31803 Cold Finished Seamless Tubes
European standard Applications & uses UNS S31803 tubing manufacturing type
  • EN 10217-7 (welded tubing)
  • EN 10296-2 (welded tubing)
  • EN 10297-2 (seamless tubing)
  • EN 10216-5 (seamless & welded tubing)
  • EN 10312 (welded tubing)
  • Heat Exchangers
  • Chloride environments
  • Fluid and gas transport
  • Boilers
  • Superheaters
  • Sea water
  • A789 S31803 seamless tube
  • A789 UNS S31803 welded tube
  • SA 789 S31803 ERW tubing
  • A789 S31803 EFW tube
ASTM A789 UNS S31803 wall thickness Meet standards SA789 S31803 tubes surface finish and treatments
  • 4 Inch
  • Schedule 5 / 5S
  • SCH 10 SA 789 S31803 tubing (Most selling)
  • ASTM A789 UNS S31803 SCH 10S
  • SCH 20
  • SCH 30
  • SCH 40 ASTM A789M tube (Most selling)
  • SCH 40S
  • SCH 80 / 80S
  • SCH 120
  • SCH 160
  • Standard (SCH STD)
  • Ex-Standard (XS)
  • Double Extra Strong (XSS)
  • NSF 61
  • DIN 17458
  • EN 10217-7
  • ASME B36.19M
  • EN 10216 – 5
  • EN 10216 – 2
  • EN 10088-3
  • ASME B36.19
  • DIN 17456
  • EN 10088-2
  • Pickled (As per ASTM A380)
  • Cleaned
  • Precleaned
  • Passivated
A789 S31803 heat exchanger tube finish QC and A789 S31803 heat exchanger tube supporting documents List of leading SA 789 S31803 tubing manufacturers
  • Solution annealed ASTM A789 UNS S31803 tube
  • Annealed & Pickled (A&P)
  • 600 grit
  • 400 grit
  • No.4
  • Mirror
  • Bright Annealed
  • 180 grit polished
  • 2B
  • 320 grit
  • Matt finish
  • BA polishing
  • Cold Drawn
Refer these details before buying ASTM A789 UNS S31803 Tube from manufacturers, suppliers, traders,
stockholders, stockist, or importers

  • MTC EN 10204 type 3.1
  • Verify quantity
  • UNS S31803 welded tube detailed inspection plan (appearance, integrity, packaging etc)
  • Check SA789 S31803 tubes dimensions
  • SA 789 S31803 tubing material, schedule & size as per the work order
  • Origin of material
  • Labeling verification
  • QC/ Inspection reports
Check ex-stock of these make with above verified listed ASTM A789 UNS S31803 Tube suppliers

  • Tenaris, Luxembourg (Europe)
  • ArcelorMittal, Luxembourg (Europe)
  • Outokumpu, Finland (Europe)
  • Steelmor, Gauteng (South Africa)
  • JFE, Japan
  • Jindal steel pipe, India
  • SMM Oman
  • Sosta, Italy
  • Jiangsu Shagang, China
  • Nippon Steel & Sumitomo Metal Corporation, Japan
  • Nippon Yakin Kogyo Co., Ltd., Japan
  • Tata Steel, India
  • Tubecon, Pretoria (South Africa)
  • POSCO, South Korea
  • Aperam, Luxembourg (Europe)
  • Nippon Steel Corporation, Japan
  • Bristol Metals, USA
  • ThyssenKrupp AG, Germany
  • MACSTEEL, Gauteng (South Africa)
  • Baosteel, China
  • Acerinox, Spain
  • Sandvik, Sweden
  • AL JAZEERA, Oman
SA 789 UNS S31803 tube value added services A789 UNS S31803 shell and tube heat exchangers types
  • Beveling
  • Threading
  • Cutting
  • Polishing
  • ASTM A789 S31803 U bend tube
  • SA789 S31803 straight tubing (seamless)

Purchase a789 s31803 seamless tube stock from the Middle East and Asia stockist with a variety of lengths. see sa 789 UNS s31803 versus a182 f51 comparison

UNS S31803 seamless tube equivalent material

Standard Material name EN/ DIN/ Wnr China Buttweld Fittings Flanges Fasteners Welding Electrode
ASTM A789 UNS S31803 1.4462/ F51 022Cr23Ni5Mo3N ASTM A815 UNS S31803 ASTM A182 F51 ASTM A453 Grade 660 Duplex Welding Electrode

SA 789 S31803 material chemical composition

UNS Number
Duplex Grades
Si Mn P Typeb N Cu Other S Cr Ni C Mo
S31803 1.00 2.00 0.030 0.08-0.20 0.020 21.0-23.0 4.5-6.5 0.030 2.5-3.5

Tensile & Yield strengths of A789 S31803 boiler tube

UNS Yield Strength Tensile Strength
ASTM A789 UNS S31803
  • 65 Ksi
  • 450 Mpa
  • 90 Ksi
  • 620 Mpa

ASTM A789 UNS S31803 Tube Properties

Heat treatment of A789 S31803 heat exchanger tube

UNS Temperature range
ASTM A789 UNS S31803
  • 1870-2010 °F
  • 1020-1100 °C

ASTM A789 S31803 bright annealed tube types and forms

SA 789 UNS s31803 tubing

SA 789 UNS S31803 tubing

A789 s31803 seamless tube

A789 S31803 seamless tube

ASTM a789 UNS s31803 tubing

ASTM A789 UNS S31803 tubing

A789 UNS S31803 welded tube

A789 UNS S31803 welded tube

UNS S31803 tubing

UNS S31803 tubing

ASME SA789m UNS s31803 tubes

ASME SA789m UNS S31803 tubes

  • SA789 S31803 Condenser Tube
  • A789 S31803 duplex Heater Tube
  • A789 S31803 Heat Exchanger Tube
  • ASTM A789 S31803 Instrumentation Tubing
  • SA 789 UNS S31803 Square Tubing
  • ASTM A789M Exhaust Tubing
  • A789 S31803 duplex Rectangular Tubing
  • A789 UNS S31803 Round Tube
  • ASTM A789 UNS S31803 Boiler Tube
  • SA 789 UNS S31803 Coiled Tubing
  • ASTM A789M Electropolish Tube
  • A789 UNS S31803 Mechanical Tubing
  • SA 789 S31803 Sanitary Tubing
  • SA 789 UNS S31803 Bright annealed tube
  • ASTM A789 UNS S31803 Hydraulic Tubing

Tips to avoid failure of UNS S31803 heat exchanger tubes

  • To weld SA 789 S31803 tubing use the correct welding consumables
  • Buy mirror finish A789 S31803 boiler tube for resists pitting
  • Upgrade to UNS S31803 stainless steel tubing material in seawater
  • Designing and fabricating
  • UNS S31803 welded tube weld joint is best compared to cold expanded joint

UNS S31803 capillary tube dimensions and pressure
rating

Size of SA 789 S31803 Capillary Tubing
ITEM Length
(Mtrs)
Size
(MM)
Pressure
(Mpa)
1 1000 1/2″ * 0.049″ 80
2 1000 1/2″ * 0.065″ 100
3 3200 1/8″ * 0.025″ 80
4 3000 φ4mm * 1.1mm 100
5 3200 φ3mm * 0.9mm 100
6 3200 1/8″ * 0.035″ 100
7 2000 1/4″ * 0.035″ 100
8 2000 φ6mm * 0.9mm 100
9 2000 φ6mm * 1.1mm 100
10 1500 3/8″ * 0.049″ 100
11 3200 φ3mm * 0.7mm 80
12 2000 1/4″ * 0.049″ 100
13 1500 3/8″ * 0.035″ 80
14 3000 φ4mm * 0.9mm 100
15 1800 φ8mm * 1mm 80
16 500 φ10mm * 2mm 100
17 1800 φ8mm * 1.2mm 100
18 1500 φ10mm * 1mm 70
19 1500 φ10mm * 1.2mm 70
20 500 φ12mm * 1.5mm 80

UNS S31803 coiled tubing specification

OD Length Maximum weight of A789 S31803 boiler tube single reel
  • 3/4 “
  • 2″
  • 1 3/4″
  • 1″
  • 1 1/2″
  • 2 3/8″
  • 100 – 30,000 ft

Contact listed UNS S31803 stainless steel tubing manufacturers for longer length

  • 30t (excluding reel)
MTC & QC Maximum outside diameter of drum SA 789 S31803 tubing yield strength
  • NACE MR-0175
  • EN 10204-3.1
  • 3.40m
A789 S31803 coiled tubing

  • 483mpa-758mpa
  • 70ksi-110ksi

SA 789 UNS S31803 coiled line pipe

  • 359mpa-621mpa
  • 52ksi-90ksi
SA 789 S31803 coil tube surface finish
  • Annealed and Bright
  • Clean inside and outside
  • No burrs
  • Seamless both sides.

A789 UNS S31803 umbilical tube dimensions

Straight & Coiled tubes

Inner diameter Wall thickness (mm)
in minimum maximum mm
2 5 38.10
2.5 5.5 1) 44.45
3/4 1.1 4 19.05
1 1.3 5 25.40
3/8 1.2 2 9.53
1/2 1 2.6 12.70
5/8 1 3 15.88
1.5 5 31.75
2 2.7 6 1) 50.80

Compare the costs of at least two reliable importers of ASTM a789 UNS s31803 tubing in Dubai, and find out sa 789 UNS s31803 is better than 316.

SA 789 UNS S31803 is better than 316 as it combines ferritic and austenitic microstructure to be duplex steels. But 316 is only austenitic steel and not ferritic to have many properties of ASME SA 789 UNS S31803 Welded Tube .

316 is the most popular stainless steel but has less chromium of 16 to 18% than the 21 to 23 % in SA 79 UNS S 31803 to have high corrosion resistance and hence used in many extreme environments.
Due to their composition differences, the austenitic 316 and duplex SA 79 UNS S31803 are used in unique applications in many sectors.

ASTM A789 is one of the duplex steel grades with better properties in heat-treated conditions at 20 ℃ than the other grade steels. S 31803 is one of the early ASTM Grades of super duplex steels to be popular even after many decades. It is because of the good corrosion resistance, especially for resisting stress-related corrosion cracking. While making A789 UNS S31803 tubes through the welded or seamless process, there is no need to add any filler metal. Also, It is easy to quench these tubes in cool water or air to a temperature of 980 to 1040 ℃ or 1800 F to 1900 ºF. ASTM A789 UNS S31803 Tubing has 200 GPa elastic modulus, 25% elongation,620 MPA tensile strength, 290 Brinell hardness, 450 MPa yield strength, and other excellent properties.

SA 789 UNS S31803 and A182 F51 are both duplex steel families with almost the same chemical composition and similar properties. But A789 is the ASTM International specification for seamless and welded tubes. The ASTM specification for A182 is for stainless steel pipe flange, forged fitting, and valves required for high-temperature services.

  • SA 789 UNS S 31803 is best for chemical processes that involve chlorine and sulphide, which A182 f51 is also ideal to use.
  • ASTM A789 S31803 Tube is best for use between the temperature range of -50 ºF to + 600ºF, which differs for the A 182 F1
many of the mentioned traders supply a789 UNS s31803 welded tube from renowned manufacturers like Tenaris, Sandvik, and Thyssenkrupp, compare UNS s31803 vs. UNS s32750

Out of the duplex steel grade family having many specific formulations, ASTM A789 UNS S31803 and S32750 are the most popular. Because of their high strength and corrosion properties, duplex steel is in high demand to make tubes. ASTM A789 UNS S31803 welded tube, and UNS S 32750 tubes are versatile for use in oil & gas, chemical processing industries, etc.ASTM A789 UNS 31803 tubes are less corrosion resistant to UNS S 32750 as the chromium is high, up to 25%, whereas it is only up to 23% in 31803. Also, UNS S 32750 has more nickel and molybdenum than 31803 to be stronger and have other unique uses.

In the GCC countries, numerous distributors of UNS s31803 tubing offer cut-to-length services; for more information, see a789m UNS s31803 tubes cons and benefits

There are more pros than cons of SA 789 UNS S31803 seamless pipe has more pros and cons. Hence, SA 789 pipes are in high demand for applications in many industry verticals for decades.

A few of the pros include.

  • High corrosion resistance, including pitting, crevice, chloride, and stress corrosion at high temperature
  • Easy to weld even without needing preheating and will not crack under heat influence or pressure
  • With high thermal conductivity, best to make heat exchangers and others.

Cons of ASTM A789 UNS S31803 seamless tubing are the low heat resistance and its restricted use at temperatures below 300 C or 572 ºF.

Other popular grades