Zeron Fastners
Duplex and Super Duplex UNS S32205 Lap Joint Flanges
The Duplex and Super Duplex UNS S32205 Lap Joint Flange (LJ Flange) is a unique type of flange designed to be used in conjunction with a stub end, which is butt-welded to the pipe. The flange itself is loose, allowing it to spin freely around the stub end. This feature makes the Lap Joint Flange exceptionally valuable for applications where quick assembly and alignment of bolt holes are crucial, significantly reducing installation time. Zeron Fasteners manufactures these flanges using the high-strength UNS S32205 (Duplex 2205) material. Its primary application is in systems requiring frequent dismantling for inspection, cleaning, or modification, particularly in chemical and food processing industries. Importantly, only the cheaper stub end component is exposed to the corrosive fluid, while the reusable Duplex flange provides the necessary mechanical strength and superior corrosion resistance against external factors.
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Duplex and Super Duplex UNS S32205 Lap Joint Flanges
| Manufacturing Specifications | |
|---|---|
| Standard | ASME B16.5, ASME B16.47, MSS SP-44, API 6A |
| Grades | Duplex UNS S32205 (2205), Super Duplex UNS S32750 (2507) |
| Size Range | 1/2 inch to 60 inch |
| Pressure Class | 150 LBS to 2500 LBS |
| Type | Lap Joint Flange (LJ), Loose Backing Flange |
| Facing Type | Used with Lap Joint Stub Ends LJSF LJTJF |
Chemical Composition (UNS S32205)
| Element | Composition (%) |
|---|---|
| Carbon (C) | Max 0.030 |
| Chromium (Cr) | 22.0 to 23.0 |
| Nickel (Ni) | 4.50 to 6.50 |
| Molybdenum (Mo) | 3.00 to 3.50 |
| Nitrogen (N) | 0.14 to 0.20 |
| Manganese (Mn) | Max 2.00 |
| Silicon (Si) | Max 1.00 |
Mechanical Properties (UNS S32205)
| Property | Value |
|---|---|
| Tensile Strength (Min) | 655 MPa Min |
| Yield Strength (Min) | 450 MPa Min |
| Elongation (Min) | 25% Min |
| Hardness (Max) | 290 HBW Max |
| Impact Energy | 100 J Min |