The ASTM F304L Long Radius (LR) Elbow is a pipe fitting designed to change the direction of fluid flow in a piping system by 90 degrees or 45 degrees, featuring a radius of curvature 1.5 times the pipe’s diameter. Made from F304L stainless steel, this elbow provides excellent resistance to corrosion and high-temperature environments, making it ideal for industries such as chemical processing, oil and gas, and power generation. Its low carbon content reduces the risk of carbide precipitation during welding, enhancing its durability and performance in welded applications. The long radius design minimizes pressure drop and ensures smoother flow.
| Property | Details |
|---|---|
| Standard | ASTM |
| Material | Stainless Steel F304L |
| Chemical Composition | Chromium (Cr): 18-20%<br>Nickel (Ni): 8-12%<br>Carbon (C): Max 0.03%<br>Manganese (Mn): Max 2%<br>Silicon (Si): Max 1%<br>Phosphorus (P): Max 0.045%<br>Sulfur (S): Max 0.03% |
| Mechanical Properties | Tensile Strength: Min 485 MPa (70,000 psi)<br>Yield Strength: Min 170 MPa (25,000 psi)<br>Elongation: Min 35% |
| Type | Long Radius (LR) Elbow |
| Radius | 1.5 times the diameter of the pipe |
| Connection Type | Butt Weld, Socket Weld, Threaded |
| Size Range | 1/2″ to 24″ |
| Pressure Rating | Class 150, Class 300, Class 600, Class 900, Class 1500, Class 2500 |
| Applications | Chemical processing, oil and gas, power generation |
| Manufacturing | Machined, heat-treated |
| Advantages | High strength, corrosion resistance, smooth flow, minimal pressure drop |
| Ordering Information | Specify size, connection type, and pressure class |
| Suppliers | McMaster-Carr, Grainger, Penn Stainless Products |
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