ASTM A815 UNS S31803

ASTM A815 UNS S31803 Fittings

ASTM A815 UNS S31803 Elbow

ASTM A815 UNS S31803 Elbow

SA 815 S31803 Reducer

SA 815 S31803 Reducer

A815 S31803 Tee

A815 S31803 Tee

 

GradeUNS S31803
StandardASTM A815 / ASME B16.9
Size Range1/2″ – 24″
ScheduleSCH 10 – XXS
MTCEN 10204 3.1
OriginMade in India

ASTM A815 UNS S31803 covers wrought duplex stainless steel buttweld pipe fittings. This ferritic-austenitic alloy has about 22% chromium, 5% nickel and 3% molybdenum. Ramesh Steel Corporation is a leading A815 S31803 Buttweld Fittings manufacturer in India. SA 815 S31803 Elbows, tees, reducers, caps, stub ends and pipe bends are made to ASME B16.9. Both seamless (WP-S) and welded (WP-W) construction are available. Recent orders include stub ends and bends to Saudi Arabia, elbows and reducers to Malaysia and UAE, and mixed fitting sets to Nigeria and USA.

Table of Content

 

 

A815 UNS S31803 Duplex Buttweld Fittings Manufacturer in India

ASTM A815 UNS S31803 fittings specification

Demanded Size

Demanded Size :

  • Buttweld : 1/2″ – 24″
  • Welded : 24″ – 96″
  • Seamless : 1/2″ – 36″

Schedule

Schedule :

  • SCH 10 to SCH XXS

Types Of Ends

Types Of Ends :

  • Plain / Bevelled
  • Butt weld

Manufacturing Form

Manufacturing Form (Class WP) :

  • WP-S (Seamless)
  • WP-W (Welded)
  • WP-WX (100% Radiographed)
  • WP-WU (100% Ultrasonically Tested)

Applicable Standards

Design Standards :

  • ASME B16.9, B16.28
  • DIN, EN, JIS, ISO

Available Packaging

Packaging :

  • Wooden Case / Pallet
  • Carton Box / Custom

 

Find ASME SA815 UNS S31803 buttweld fittings in elbow, tee, reducer, cap and pipe bend forms

Types of A815 UNS S31803 elbow

ASTM A815 WP-S UNS S31803 45 deg elbow

45° Elbow

ASTM A815 UNS S31803 90 deg elbow

90° Elbow

A815 UNS S31803 180 deg elbow

180° Elbow

Available in long radius (LR, centre-to-end 1.5D) and short radius (SR, centre-to-end 1.0D) per ASME B16.9, seamless and welded, sizes 1/2″ to 24″.

Types of A815 S31803 tee

A815 S31803 equal tee

Equal Tee

ASTM A815 WP-S UNS S31803 reducing tee

Reducing Tee

SA 815 S31803 lateral tee

Lateral / Barred Tee

Types of SA 815 S31803 reducer

ASME SA815 UNS S31803 concentric reducer

Concentric Reducer

WPS S31803 eccentric reducer

Eccentric Reducer

A815 WP-S UNS S31803 cap & stub end

ASTM A815 WPX UNS S31803 end caps

End Cap

WPS S31803 long stub end

Long Stub End

ASTM A815 WPS 31803 short stub end

Short Stub End

Stub ends are made to MSS SP-43 for use with lap joint (backing) flanges – long pattern for larger sizes, short pattern for smaller sizes.

SA 815 S31803 pipe bend types

A815 WPX UNS S31803 45 degree bend

45° Bend

WPS S31803 90 deg bend

90° Bend

A815 S31803 WP-S 180 deg pipe bend

180° Bend

Bends to ASME B16.49, common radius 3D and 5D, welded and buttweld ends, sizes to match project pipe schedule.

 

ASTM A815 UNS S31803 chemical composition

Key Alloying Elements

Key Alloying Elements :

  • Chromium (Cr) : 21.00 – 23.00%
  • Nickel (Ni) : 4.50 – 6.50%
  • Molybdenum (Mo) : 2.50 – 3.50%
  • Nitrogen (N) : 0.08 – 0.20%

Residual Elements

Residual / Matrix Elements :

  • Carbon (C) : 0.03% max
  • Manganese (Mn) : 2.00% max
  • Silicon (Si) : 1.00% max
  • Phosphorous (P) : 0.03% max, Sulphur (S) : 0.02% max
  • Iron (Fe) : Balance

 

A815 S31803 material mechanical properties

Mechanical Properties

Minimum / Maximum Values :

  • Tensile Strength (min) : 620 MPa
  • Yield / Proof Strength (min) : 450 MPa
  • Elongation (min) : 25%
  • Hardness, Brinell (max) : 290 HB

 

ASTM A815 UNS S31803 physical properties

Thermal Properties

Thermal Properties :

  • Melting Range : 1420 – 1465°C
  • Solution Annealing Temp. : ~1020 – 1100°C, rapid quench
  • Max. Service Temp. : ~300°C (embrittlement risk above)
  • Min. Service Temp. : -50°C
  • Thermal Conductivity : 19.0 W/m·K
  • Thermal Expansion : 13.7 x10-6/K

Density & Electrical

Density, Modulus & Resistivity :

  • Density : 7.805 g/cm³
  • Modulus of Elasticity : 200 GPa
  • Electrical Resistivity : 0.85 x10-6 Ω.m

 

Equivalent grades of A815 UNS S31803

Equivalent Grades

Cross-Reference :

  • UNS : S31803
  • Common Name : 2205
  • Werkstoff Nr. : 1.4462
  • BS : 318S13

 

Standards & sour-service compliance

Sour Service

Sour Service :

  • NACE MR0175 / ISO 15156
  • NACE MR0103 / TM-0284
  • NORSOK, HIC Tested

Testing

Testing & Inspection :

  • PMI, Hydrostatic
  • Magnetic Particle, Ultrasonic
  • HIC Test, MTC EN 10204 3.1/3.2

Certification

Approvals :

  • ADNOC Approved Manufacturer
  • IBR, ASME B31.3 Compliant

 

Recent A815 UNS S31803 supplied projects

IndiaMumbai✈️Saudi ArabiaSaudi Arabia
2205Stub ends for lap joint flange, 3″-6″, SCH 10S/40S
A815 S3180390° LR seamless bends, 5D radius, SCH 10S/40S
UNS S3180390° seamless elbow 3″ & conc. reducer 3″x2″, SCH 40
IndiaMumbai🚢NigeriaNigeria
A815 S3180390° LR elbow 10″, barred tee 10″x10″, weldolet 10″x2″
S31803Mixed LR seamless elbows & reducing tees, DN100-DN200, SCH 120-160
IndiaMumbai✈️USAUSA (Tampa)
Werkstoff 1.446290°/45° LR elbows, tees & elliptical cap
A815 S318032″-6″, SCH 160S, bevelled ends, Class WP-S
IndiaMumbai🚢MalaysiaMalaysia
220520″x10″ conc. reducer tee, SCH STD x 40S, DDP to KLIA
UNS S31803DN100 90° LR elbow SCH 40S, NACE MR0175 inspection
SA 815 S3180320″x12″ welded conc. reducer, sour service
IndiaMumbai🚢UAEUAE (Dubai)
S3180345° LR elbow 2″ SCH 40
A815End cap 3″ SCH 40
IndiaMumbai🚢QatarQatar
2205Barred tee 6″x4″ & conc. reducer 6″x4″, SCH 40
UNS S3180390° LR elbow 4″, SCH 80S, NACE MR0175

 

Export network & delivery estimate

Gulf orders move fastest by sea from Mumbai; Africa, the Americas and Southeast Asia ship by sea or air depending on urgency.

🏗️ Middle East
UAEUAE6-7 days
OmanOman5-6 days
QatarQatar7 days
Saudi ArabiaSaudi Arabia7-8 days
KuwaitKuwait7-8 days
BahrainBahrain9-10 days
🌐 Africa
NigeriaNigeriaSea/air, ETA on discharge
EgyptEgyptSea/air, ETA on discharge
South AfricaSouth AfricaSea/air, ETA on discharge
🌐 Europe & UK
United KingdomUnited KingdomSea/air, ETA on discharge
NetherlandsNetherlandsSea/air, ETA on discharge
GermanyGermanySea/air, ETA on discharge
TurkeyTurkeySea/air, ETA on discharge
BelgiumBelgiumSea/air, ETA on discharge
🌐 Americas
USAUSASea/air, ETA on discharge
CanadaCanadaSea/air, ETA on discharge
MexicoMexicoSea/air, ETA on discharge
🌊 Southeast & South Asia
MalaysiaMalaysiaSea/air, ETA on discharge
SingaporeSingaporeSea/air, ETA on discharge
ThailandThailandSea/air, ETA on discharge
VietnamVietnamSea/air, ETA on discharge
South KoreaSouth KoreaSea/air, ETA on discharge
AustraliaAustraliaSea/air, ETA on discharge

 

FAQs – ASTM A815 UNS S31803 fittings


What is ASTM A815 UNS S31803?

ASTM A815 UNS S31803 is the specification for wrought duplex stainless steel buttweld pipe fittings. It covers elbows, tees, reducers, caps and stub ends. The alloy has about 22% chromium, 5% nickel and 3% molybdenum. It is also known by its common name, 2205.

What is the difference between WP-S, WP-W, WP-WX and WP-WU?

These are ASTM A815 manufacturing classes for Class WP fittings. WP-S is seamless. WP-W is welded, with no filler metal or consumable insert. WP-WX is welded with all welds radiographed. WP-WU is welded with all welds ultrasonically tested.

What sizes of A815 S31803 elbow, tee and reducer are available?

ASTM A815 UNS S31803 buttweld fittings are available in 1/2 inch to 24 inch sizes. Duplex S31803 welded fittings go up to 96 inch and A815 S31803 seamless fittings up to 36 inch, in schedules from SCH 10 to SCH XXS, to ASME B16.9.

What is the maximum service temperature for A815 UNS S31803 fittings?

UNS S31803 duplex fittings are generally used up to about 300°C. Above this temperature the high chromium content that gives corrosion resistance can cause embrittlement. At low temperatures the material can be used down to at least -50°C.

Is UNS S31803 the same as 2205?

Yes. 2205 is the common trade name for UNS S31803 duplex stainless steel, also cross-referenced as Werkstoff 1.4462 and BS 318S13.

Do you supply A815 S31803 fittings for sour service, NACE MR0175?

Yes. Ramesh Steel Corporation supplies A815 UNS S31803 fittings to NACE MR0175/ISO 15156 and NACE MR0103 sour-service requirements, with HIC testing and MTC EN 10204 3.1/3.2 on request.

What is the lead time for A815 UNS S31803 fittings to the Middle East?

Typical transit is 6 to 7 days to the UAE, 5 to 6 days to Oman, 7 days to Qatar, 7 to 8 days to Saudi Arabia, and 9 to 10 days to Bahrain, by sea from Mumbai. Air freight is faster for urgent orders.

Our Products

Top 8 Reasons to Choose Ramesh Group for High Pressure Applications

adnoc-approved-manufacturer

  • ADNOC approved manufacturer and supplier of seamless fittings and forged steel flanges
  • Supply industrial steel piping products in Europe as per CBAM requirements
  • Exporter of high performance weld fittings suitable for corrosion resistant environment
  • Distributor of butt welding fittings for Marine application as per MTC EN 10204 3.1/ 3.2
  • All pipe flange comes with NACE MR0175 and pressure class 150 to 2500 as per ASME B16.5.
  • Over 250 Fabricators and traders in Middle East and European countries import prime quality BLRF, SORF and WNRF flanges because our material is accepted in Abu Dhabi National Oil Company
  • Supplying SMLS elbow, tee, reducer and end cap to Stockist and wholesaler of piping materials in Saudi Arabia at Resale price as per ASME B16.9.
  • Keep custom sizes Ex stock of standard sizes with stockholders in USA and Mexico for urgent requirements in replacement situations