3 Inch UNS31803 LR 1.5D Duplex Steel Pipe Fittings
Duplex Stainless Steel UNS31803 2205 UNS32205 Pipe Eblow 90 Degree (LR) 1.5D Fittings
"Zheheng steel" is a professional manufacturer of UNS31803 2205 UNS32205 stainless steel pipe fittings and flanges,
Why use duplex steel 2205 and S31803 elbow fittings?
At temperatures above 300°C, the brittle micro-constituents of this grade undergo precipitation, and at temperatures below -50°C the micro-constituents undergo ductile-to-brittle transition; hence this grade of stainless steel is not suitable for use at these temperatures.
what is the Duplex 2205 pipe elbow fittings material?
Duplex 2205 pipe elbow fittings (both ferritic and austenitic) is used extensively in applications that require good corrosion resistance and strength. The S31803 grade stainless steel has undergone a number of modifications resulting in UNS S32205, and was endorsed in the year 1996. This grade offers higher resistance to corrosion.
what is duplex ss31803 ,2205 ?
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 2205 (S31803) | Min | - | - | - | - | - | 21 | 2.5 | 4.5 | 0.08 |
| Max | 0.03 | 2 | 1 | 0.03 | 0.02 | 23 | 3.5 | 6.5 | 0.2 | |
| 2205 (S32205) | Min | - | - | - | - | - | 22 | 3 | 4.5 | |
| Max | 0.03 | 2 | 1 | 0.03 | 0.02 | 23 | 3.5 | 6.5 |
duplex steel UNS31803 2205 UNS32205 Pipe Eblow Mechanical Properties
The typical mechanical properties of grade 2205 stainless steels are listed in the table below. Grade S31803 has similar mechanical properties to that of S32205.
| Grade | Tensile Str | Yield Strength | Elongation | Hardness | |
| (MPa) min | 0.2% Proof | (% in 50mm) min | |||
| (MPa) min | Rockwell C (HR C) | Brinell (HB) | |||
| 2205 | 621 | 448 | 25 | 31 max | 293 |
products description
Dimensions of Long Radius Elbows
| Nominal Pipe Size (NPS) | Outside Diameter at Bevel | Center-to-End | |
| 90 deg Elbows, A | 45 deg Elbows, B | ||
| % | 21.3 | 38 | 16 |
| % | 26.7 | 38 | 19 |
| 1 | 33.4 | 38 | 22 |
| 1% | 42.2 | 48 | 25 |
| 1-1/2" | 48.3 | 57 | 29 |
| 2 | 603 | 76 | 35 |
| 2-1/2" | 73 | 95 | 44 |
| 3 | 88.9 | 114 | 51 |
| 101.6 | 133 | 57 | |
| 4 | 114.3 | 152 | 64 |
| 5 | 141.3 | 190 | 79 |
| 6 | 168.3 | 229 | 95 |
| 8 | 219.1 | 305 | 127 |
| 10 | 273 | 381 | 159 |
| 12 | 323.8 | 457 | 190 |
| 14 | 355.6 | 533 | 222 |
| 16 | 406.4 | 610 | 254 |
| 18 | 457 | 686 | 286 |
| 20 | 508 | 762 | 318 |
| 22 | 559 | 838 | 343 |
| 24 | 610 | 914 | 381 |
| 26 | 660 | 991 | 406 |
| 28 | 711 | 1 067 | 438 |
| 30 | 762 | 1 143 | 470 |
| 32 | 813 | 1 219 | 502 |
| 34 | 864 | 1 295 | 533 |
| 36 | 914 | 1 372 | 565 |
| 38 | 965 | 1 448 | 600 |
| 40 | 1 016 | 1 524 | 632 |
| 42 | 1067 | 1 600 | 660 |
| 44 | 1 118 | 1 676 | 695 |
| 46 | 1 168 | 1 753 | 727 |
| 48 | 1 219 | 1 829 | 759 |
GENERAL NOTE: All dimensions are in millimeters.
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