Alloy 909，Incoloy 909 Bar(Round bar, Flat bar)，UNS N19909

British Specs:，American Specs: AMS 5884 Bar and Forgings AMS 5892 Sheet and Strip AMS 5893 Bar and Forgings，German Specs:

Alloy 909 (Incoloy 909 Wire, UNS N19909) - High-Performance Nickel-Based Superalloy

Alloy 909, commercially known as Incoloy 909 and designated under the UNS number N19909, is a premium nickel-iron-cobalt based superalloy engineered for exceptional strength, thermal stability, and corrosion resistance in demanding environments. This high-performance material is particularly valued in applications requiring superior mechanical properties at elevated temperatures, making it a cornerstone in industries such as aerospace, power generation, and advanced engineering.

Chemical Composition

The carefully formulated chemistry of Alloy 909 (UNS N19909) is key to its exceptional performance. The typical composition (by weight) includes:

Nickel (Ni): 40-45% (primary matrix element)

Iron (Fe): 30-35% (balances the alloy and enhances stability)

Cobalt (Co): 15-20% (improves high-temperature strength)

Molybdenum (Mo): 3-5% (boosts creep resistance and corrosion performance)

Titanium (Ti): 1.5-2.5% (aids in forming strengthening precipitates)

Aluminum (Al): 0.5-1.5% (works with titanium to create gamma-prime (γ’) phases)

Trace elements: Carbon (C), Silicon (Si), Manganese (Mn), and Chromium (Cr) in controlled amounts (<0.5% total) to optimize grain structure and weldability.

This blend forms a robust metallic matrix reinforced by intermetallic γ’ precipitates during heat treatment, which are critical for maintaining strength at temperatures up to 650°C (1200°F).

Key Properties

Alloy 909 Wire (Incoloy 909) exhibits a unique combination of mechanical and thermal properties that set it apart in high-stress environments:

Mechanical Properties (at room temperature, annealed condition):

Tensile strength: 1000-1200 MPa (145,000-174,000 psi)

Yield strength (0.2% offset): 700-850 MPa (101,500-123,300 psi)

Elongation (in 50 mm): 15-25% (excellent ductility for fabrication)

Hardness: 28-32 HRC (after aging treatment)

High-Temperature Performance:

Creep resistance: Maintains <0.2% creep deformation after 1000 hours at 650°C (1200°F) under 300 MPa (43,500 psi) stress.

Thermal stability: Retains >80% of room-temperature strength at 600°C (1112°F).

Oxidation resistance: Forms a protective oxide layer in air up to 800°C (1472°F), preventing rapid degradation.

Physical Properties:

Density: 8.1 g/cm³ (0.292 lb/in³)

Thermal conductivity: 15-18 W/(m·K) at 20°C (68°F)

Coefficient of thermal expansion: 12-14 μm/(m·K) (20-600°C)

Applications

The unique properties of Incoloy 909 Wire (UNS N19909) make it indispensable in industries requiring reliability under extreme heat and stress:

Aerospace & Defense:

Aircraft engine components: Turbine blade retainers, combustion chamber liners, and exhaust system fasteners.

Rocket propulsion systems: High-temperature gaskets and thermocouple sheaths for fuel delivery systems.

Structural parts in supersonic vehicles: Springs and connectors exposed to thermal cycling.

Power Generation:

Gas turbine hot-section components: Valve stems and seal wires in turbine casings.

Steam turbine systems: Welded wire mesh for heat exchanger screens.

Industrial & Advanced Engineering:

High-temperature furnaces: Heating element supports and thermocouple protection tubes.

Nuclear energy: Control rod drive mechanisms (resistant to radiation-induced embrittlement).

Petrochemical processing: Welded wire components for catalytic reactors operating at 500-600°C (932-1112°F).

In summary, Alloy 909 (Incoloy 909 Wire, UNS N19909) stands as a top-tier material choice for engineers and manufacturers seeking a superalloy that delivers uncompromising performance in extreme environments. Its precise chemical composition, robust mechanical properties, and versatility in wire form position it as an indispensable solution in cutting-edge industrial and aerospace applications.

Packing of Standard Packing:

 Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 3030 gallon liquid totes Special package is available on request.