The 90° Elbow F347/H ASTM is a vital pipe fitting used to change the direction of flow in a piping system by 90 degrees. This elbow is manufactured from stainless steel grade F347 or F347H, which is known for its excellent resistance to intergranular corrosion after exposure to high temperatures in the range of 800-1500°F (427-816°C). The “H” in F347H signifies a higher carbon content for improved high-temperature strength. This fitting is essential in high-temperature applications such as chemical processing, petrochemical, and power generation industries. The robust construction and precise engineering of the 90° Elbow ensure reliable performance, durability, and longevity in demanding environments where both corrosion resistance and high-temperature strength are critical.
| Property | Details |
|---|---|
| Standard | ASTM A182 |
| Material | Stainless Steel F347/H |
| Chemical Composition | Chromium (Cr): 17-19%<br>Nickel (Ni): 9-13%<br>Carbon (C): Max 0.10% (F347), 0.04-0.10% (F347H)<br>Niobium (Nb): 10 x C Min<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 515 MPa (75,000 psi)<br>Yield Strength: Min 205 MPa (30,000 psi)<br>Elongation: Min 40% |
| Type | 90° Elbow |
| Connection Type | Welded or threaded connections |
| Size Range | Custom sizes available, typically from 1/2″ to 24″ |
| Pressure Rating | Class 150, Class 300, Class 600, Class 900, Class 1500, Class 2500 |
| Applications | High-temperature chemical processing, petrochemical industries, power generation |
| Manufacturing | Machined, heat-treated |
| Advantages | High-temperature strength, resistance to intergranular corrosion, precise directional flow control |
| Ordering Information | Specify pipe sizes, pressure class, and connection type |
| Suppliers | McMaster-Carr, Grainger, Penn Stainless Products |
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