ASTM B407 is a standard specification for nickel-iron-chromium alloy Incoloy 800 seamless pipes and tubes. ASTM B407 Incoloy 800 is a widely used nickel-based alloy known for its excellent high-temperature strength and corrosion resistance.
ASTM B407 Incoloy 800 material properties
1. Incoloy 800 UNS N08800 Chemical Composition:
- Nickel (Ni): 30.0-35.0%
- Iron (Fe): 39.5% min
- Chromium (Cr): 19.0-23.0%
- Aluminum (Al): 0.15-0.60%
- Titanium (Ti): 0.15-0.60%
- Carbon (C) for Incoloy 800: 0.10% max
- Carbon (C) for Incoloy 800H: 0.05-0.10%
- Other elements such as manganese, sulfur, and silicon in small quantities.
2. ASTM B407 UNS N08800 Mechanical Properties:
- Tensile Strength: 75 ksi (517 MPa) minimum (at room temperature)
- Yield Strength (0.2% Offset): 30 ksi (207 MPa) minimum (at room temperature)
- Elongation: 30% minimum (in 2 inches or 50 mm).
3. nickel alloy 800 Physical Properties:
- Density: 7.94 g/cm³ (0.287 lb/in³)
- Melting Point: 1350-1400°C (2462-2552°F)
4. ASTM B407 Incoloy 800 Thermal Properties:
- Specific Heat Capacity: 0.460 J/g-°C (0.110 Btu/lb-°F) at 20°C (68°F)
- Thermal Conductivity: 11.4 W/m-°C (66.3 Btu·in/(ft²·hr·°F)) at 20°C (68°F)
5. Alloy 800 Electrical Resistivity: 1.08 µΩ·m (ohm-meter) at 20°C (68°F)
6. Incoloy 800 Temperature Limits:
- Incoloy 800 is typically used in applications up to about 1100°C (2012°F).
