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ASME B16.9 Buttweld Pipe Fitting ASTM A815 UNS S31803 Duplex Steel Reducer Tee
Pipe Tee fittings are commonly used in plumbing and piping systems to allow for a 90-degree connection for branching off the main pipeline. They help in maintaining the flow of fluids in different directions. Equal tee and reducing tee are common types of pipe tee. An equal tee has branches that are the same size as the run pipe, while a reducing tee has a smaller branch size compared to the run pipe.
ASTM A815 Duplex Steel Pipe Fitting Specification
| Specifications | ASTM A815 / ASME SA815 |
| Dimensions | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43 |
| Grades | Duplex S31803, S32750, S32760 |
| Size | 1/2” NB to 24″NB in |
| Type | Seamless / Welded / Fabricated |
| Thickness | Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS |
| Form | Ecc. Reducer, Con. Reducer, Red. Tee, Equal Tee, Elbow, Cap |
ASTM A815 Fitting MSS Standards
MSS SP-43
MSS SP-79 Socket-Welding Reducer Inserts
MSS SP-83 Steel Pipe Unions, Socket-Welding and Threaded
MSS SP-95
MSS SP-97 Integrally Reinforced Forged Branch Outlet FittingsSocket Welding, Threaded and Buttwelding Ends
ASTM A815 Fitting ASME Standards
B16.11 Forged Fittings, Socket-Welding and Threaded
B16.9 B/W Fitting
Equivalent Grades of ASTM A815 UNS S31803 Tee
| STANDARD | WERKSTOFF NR. | UNS |
| Duplex 2205 | 1.4462 / 1.4462 | S31803 / S32205 |
Chemical Composition of ASTM A815 UNS S31803 Tee
| Cr | Ni | Mo | C | W | Cu |
|---|---|---|---|---|---|
| 24.0-26.0 | 6.0-8.0 | 3.0-4.0 | 0.030 Max | 0.5-1.0 | 0.50-1.0 |
| N | Mn | Si | P | S | Fe |
| 0.2-0.3 | 1.00 Max | 1.0 Max | 0.03 Max | 0.01 Max | Balance |
Mechanical Properties of ASTM A815 UNS S31803 Tee
| Tensile Strength, ksi | .2% Yield Strength, ksi | % Elongation in 50mm | Hardness Max. |
|---|---|---|---|
| 109 | 80 | 25 | 28 HRC |
Applications
Duplex stainless steels are extremely corrosion resistant, work hardenable alloys. Their microstructures consist of a mixture of austenite and ferrite phases. As a result, duplex stainless steels display properties characteristic of both austenitic and ferritic stainless steels. This combination of properties can mean some compromise when compared with pure austenitic and pure ferritic grades.
