ASTM A403 WP304H Buttweld Fittings stand as a testament to the resilience and adaptability of stainless steel in demanding environments. These fittings, crafted from Grade 304H stainless steel, exhibit enhanced high-temperature strength and exceptional corrosion resistance. They play a pivotal role in the design and construction of reliable piping systems for industries spanning from power generation to chemical processing. The "H" designation signifies the higher carbon content present in Grade 304H, which bolsters its ability to withstand elevated temperatures and thermal cycling.
At the heart of ASTM A403 WP304H Buttweld Fittings lies their capacity to provide robust and leak-free connections in high-temperature applications. With applications in heat exchangers, boilers, and various high-temperature processes, these fittings ensure the efficient conveyance of fluids and gases even under extreme thermal conditions. The fittings' precision engineering guarantees seamless integration with piping systems, ensuring smooth transitions, minimal resistance, and optimal flow.
The corrosion resistance of Grade 304H stainless steel further elevates the reliability of these fittings. They are capable of withstanding corrosive agents and environments, safeguarding the integrity of the piping network. This attribute is particularly crucial in industries where both high temperatures and corrosive substances are prevalent. By offering exceptional mechanical strength, thermal stability, and corrosion resistance, ASTM A403 WP304H Buttweld Fittings underscore their indispensable role in ensuring the safe and efficient operation of various high-temperature industrial processes.
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Specification:
Standard: ASTM A403
Material Grade: WP304H
Types: Elbows (90°, 45°, 180°), Tees (Equal and Reducing), Reducers (Concentric and Eccentric), Caps, Stub Ends, Crosses, Couplings
Sizes: 1/2" NB to 48" NB
Wall Thickness: Schedule 5S to XXS
Manufacturing: Seamless and Welded
Ends: Beveled, Plain
Surface Finish: Pickled and Passivated, Bright Annealed
Connection: Butt Weld
Corrosion Resistance: Excellent
Temperature Range: -20°F to 1500°F (-29°C to 816°C)
Pressure Class: 150, 300, 600, 900, 1500, 2500
Chemical Composition of ASTM A403 WP304H Buttweld Fittings
| Element | Carbon (C) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Silicon (Si) | Chromium (Cr) | Nickel (Ni) |
| Composition (%), Maximum | 0.04 - 0.10 | 2.00 | 0.045 | 0.030 | 0.75 | 18.0-20.0 | 8.0-11.0 |
Mechanical Properties of ASTM A403 WP304H Buttweld Fittings
| Property | Tensile Strength (psi) | Yield Strength (psi) | Elongation (%) |
| Room Temperature | 75,000 | 30,000 | 30 |
| Elevated Temperature | 30,000 | 20,000 | 30 |
Advantages of ASTM A403 WP304H Buttweld Fittings:
- Good general corrosion resistance and high strength
- Good sulfide stress corrosion resistance
- Resistance to chloride pitting and crevice corrosion
- Higher resistance to chloride stress corrosion cracking
- Easy to weld and conform
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Applications Industry
| Pharmaceutical Equipment | Chemical Equipment |
| Sea Water Equipment | Heat Exchangers |
| Heat Exchangers | Gas Processing |
| Condensers | Specialty Chemicals |
| Pulp and Paper Industry | Pharmaceuticals |
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