The 45° Elbow F347/H ASTM is a pipe fitting designed to change the direction of flow within a piping system by 45 degrees. Made from stainless steel grade F347 or F347H, this elbow offers excellent resistance to intergranular corrosion following exposure to temperatures in the chromium carbide precipitation range of 800-1500°F (427-816°C). The “H” designation indicates that the material has a higher carbon content for enhanced high-temperature strength. This fitting is commonly used in high-temperature chemical processing, petrochemical, and power generation applications. Its robust construction ensures durability and reliability in demanding environments, making it a vital component for systems requiring precise directional flow control and high corrosion resistance.
| 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 | 45° 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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