UNS S33400 Incoloy Alloy Incoloy 840 Seamless Tube For Automobile Exhaust Systems
UNS S33400 Incoloy 840 nickel based alloy seamless tube for automobile exhaust systems
Material designation: Incoloy 840 nickel based alloy
US grade: UNS S33400
Incoloy 840 nickel-based alloy applications:
Incoloy 840 nickel-based alloy due to its formability, weldability, corrosion resistance and oxidation resistance, 840 alloy is a common electric heating pipe material used to manufacture electric heating pipes, heat exchangers, equipment heaters, industrial Equipment such as heating furnaces are also commonly used in automobile exhaust systems.
Chemical composition of Incoloy 840 (S33400) nickel based alloy: see Table-1:
Table-1 %
| C≤ | Si≤ | Mn≤ | P≤ | S≤ | Cr≥ | Ni≥ | Mo≥ | Cu≤ |
| 0.08 | 1 | 1 | 0.04 | 0.03 | 18.0-20.0 | 19.0-21.0 | - | - |
| Others | N≤ | Al≤ | Ti≤ | Fe≤ | Co≤ | V≤ | W≤ | Nb≤ |
| - | - | 0.15-0.60 | Balance | - | - | - | - |
specification:
Outer diameter Φ6—762mm; wall thickness: 0.5-50mm, maximum length 18000mm
Special specifications are available upon negotiation.
Incoloy 840 nickel-based alloy physical properties:
1. Incoloy 840 nickel-based alloy elastic modulus: 29 × 106PSI (200 GPA)
2. Incoloy 840 nickel-based alloy density: 0.29 lb / in3 (8.03 g / cm3)
3. Thermal conductivity of Incoloy 840 nickel-based alloy:
| °F | °C | Btu·in/h·ft2·°F | W/m·K |
| 68-132 | 20-56 | 90.0 | 12.9 |
| 68-204 | 20-96 | 93.6 | 13.5 |
| 68-333 | 20-167 | 104.4 | 15.0 |
| 68-465 | 20-241 | 114.0 | 16.3 |
| 68-590 | 20-310 | 122.4 | 17.6 |
| 68-726 | 20-385 | 133.2 | 19.2 |
| 68-848 | 20-453 | 145.2 | 20.9 |
| 68-972 | 20-522 | 156.0 | 22.4 |
| 68-1101 | 20-594 | 168.0 | 24.1 |
| 68-1198 | 20-648 | 181.2 | 26.0 |
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