ASTM B564 UNS N08811 Nickel Alloy Full Coupling Socket Weld for Petrochemical & Power Plants
ASTM B564 UNS N08811 Nickel Alloy Full Coupling Socket Weld for Petrochemical & Power Plants
YUHONG GROUP is a specialized manufacturer of high-performance nickel alloy pipe fittings with over 35 years of expertise in serving the global energy and chemical industries. Our ASTM B564 UNS N08811 Full Coupling Socket Weld components are engineered for critical applications in petrochemical plants and power generation facilities, delivering exceptional performance in extreme temperature and corrosive environments.
Chemical Composition of UNS N08811 (Alloy 800H)
| Element | Composition (%) | Notes |
| Nickel (Ni) | 38.0 - 46.0 | Principal element |
| Chromium (Cr) | 19.0 - 23.0 | Oxidation resistance |
| Iron (Fe) | Balance | Base metal |
| Carbon (C) | 0.05 - 0.10 | Controlled for high-temperature strength |
| Manganese (Mn) | 1.50 max | |
| Sulfur (S) | 0.015 max | |
| Silicon (Si) | 1.00 max | |
| Copper (Cu) | 0.75 max | |
| Aluminum (Al) | 0.15 - 0.60 | Strength enhancement |
| Titanium (Ti) | 0.15 - 0.60 | Stabilization |
Mechanical Properties of UNS N08811 (Alloy 800H)
| Property | Requirement | Notes |
| Material | UNS N08811 | High-carbon version of Alloy 800 |
| Condition | Annealed | |
| Maximum Section Thickness | No limit | Applicable to all thicknesses |
| Tensile Strength, min | 65 ksi (448 MPa) | |
| Yield Strength (0.2% Offset), min | 25 ksi (172 MPa) | |
| Elongation in 2 in. or 50 mm, min | 30% |
Heat Treatment Requirements for UNS N08811 (Alloy 800H)
| Parameter | Requirement | Purpose & Notes |
| Process | Solution Anneal | Dissolves carbides for a uniform microstructure |
| Temperature | 2000°F (1093°C) minimum | Ensures complete carbide dissolution |
| Optional Process | Stabilization Anneal | Enhances resistance to sensitization |
| Stabilization Temperature | 1800°F (982°C) minimum | Stabilizes carbide precipitation |
| Cooling Method | Not specified (Typically rapid cooling) | Maintains a solid solution state |
ASTM B564 UNS N08811 Nickel Alloy Full Coupling Socket Weld - Application Advantages
- 1. Superior High-Temperature Performance
- 2. Exceptional Corrosion Resistance in Harsh Environments
- 3. Reliable Socket Weld Connection
- 4. Long Service Life and Cost Efficiency
- 5. Material Versatility and Compliance
- 6. Optimal for Thermal Cycling Applications
Applications:
- Petrochemical processing plants
- Power generation systems
- Heat exchanger connections
- High-temperature furnace piping
- Chemical reactor systems
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