The F347/H ASTM End Pipe Cap is an essential component used to close the end of a piping system, ensuring no leakage or exposure to external environments. Made from stainless steel grades F347 and F347H, this end cap provides excellent resistance to intergranular corrosion and oxidation, particularly after welding or exposure to high temperatures. The niobium stabilization in F347 prevents carbide precipitation, while the higher carbon content in F347H enhances strength and stability under elevated temperatures. These properties make the end pipe cap suitable for use in the chemical, petrochemical, and power generation industries, where reliable performance and durability are crucial. The cap is designed to fit securely over the pipe end, providing a robust seal and preventing damage or contamination.
| 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 | End Pipe Cap |
| Connection Type | Butt-weld |
| 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 | Chemical processing, petrochemical industries, power generation |
| Manufacturing | Machined, heat-treated |
| Advantages | Excellent corrosion resistance, high-temperature strength, robust seal |
| Ordering Information | Specify pipe sizes, pressure class, and connection type |
| Suppliers | McMaster-Carr, Grainger, Penn Stainless Products |
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