UNS N06690 (Inconel 690 / 2.4642) Key Features for Bar, Rod, Wire, Forging, Plate, and Strip:
1. High-Temperature & Corrosion Resistance
- Excellent oxidation resistance up to 1,093°C (2,000°F).
- Outstanding resistance to sulfur-containing atmospheres.
- Superior resistance to chloride-induced stress corrosion cracking (SCC), especially in nuclear and chemical processing environments.
- Exceptional resistance to aqueous corrosion, including nitric acid and oxidizing acids.
2. Mechanical Strength & Durability
- High mechanical strength and creep resistance at elevated temperatures.
- Maintains good tensile, fatigue, and creep-rupture strength in harsh environments.
- Excellent weldability without susceptibility to post-weld cracking.
UNS N06690 (Inconel 690 / 2.4642) Applications by Product Form
1. Bars / Rods / Wires
✅ Applications:
- Nuclear reactor components (steam generator tubing, control rod drive mechanisms)
- High-temperature furnace parts
- Chemical processing plant equipment (valves, pumps, fittings)
- Aerospace fasteners and structural components
- Heat exchangers and boiler components
2. Forgings
✅ Applications:
- Turbine components for power generation
- High-pressure piping and pressure vessels
- Flanges and specialty fittings for corrosive environments
- Components for petrochemical plants
3. Plates / Sheets / Strips
✅ Applications:
- Heat exchanger tubing and baffles
- Reactor vessel cladding and liners in nuclear power plants
- Gas turbine combustion liners
- Sulfuric and nitric acid processing equipment
- Food processing and pharmaceutical industry heat exchangers
Why Inconel 690?
- Excellent high-temperature strength
- Superior corrosion resistance (oxidation, nitridation, and hot gases)
- Great resistance to stress corrosion cracking (SCC) in nuclear and chemical environments
