ASTM A815 Duplex Steel UNS S31803 Buttweld Pipe Fitting ASME B16.9 5D Elbow
ASME B16.9 Buttweld ASTM A815 UNS S31803 Duplex Steel 90 Degree Elbow R=5D
ASTM A815 UNS S31803 is very popular in marine industries, nuclear projects, power plants and other chemical industries service. Because it offers excellent fatigue strength, good weldability, superior corrosion resistance compared to regular stainless steel. YUHONG can supply duplex steel elbow including grade S32205, S31803, S32750, S32760, and can custom the bending radius like 1D, 2D, 3D, 5D, etc. If you have such requirements, please feel free contact us anytime.
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, S32205, 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 |
Equivalent Grades of ASTM A815 UNS S31803 Elbow
| STANDARD | WERKSTOFF NR. | UNS |
| Duplex 2205 | 1.4462 / 1.4462 | S31803 / S32205 |
Chemical Composition of ASTM A815 UNS S31803 Elbow
| 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 Elbow
| 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.
- Duplex stainless steels are typically used in:
- Chemical processing, transport and storage
- Oil and gas exploration and offshore rigs
- Oil and gas refining
- Marine environments
- Pollution control equipment
- Pulp & paper manufacturing
- Chemical process plant
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