Alloy 909,Incoloy 909 Other/Similar Specs,UNS N19909,E FORU

British Specs:，American Specs:AMS 5884 Bars, Forgings, Rings AMS 5892 Sheet, Strip AMS 5893 Bars, Forgings, Rings，German Specs:

### **Product Datasheet: Alloy 909 / Incoloy 909 (UNS N19909) - Other Forms & Similar Specifications** **Alloy 909** (commercially known as **Incoloy 909**) is a low thermal expansion, high-strength iron-nickel-cobalt superalloy that demonstrates exceptional dimensional stability under thermal cycling conditions. Beyond the common forms of sheet, strip, and forgings, this alloy is available in various other product forms, each meeting specific industrial requirements and international standards. This datasheet covers the general specifications applicable across all product forms and highlights the alloy's versatility in meeting diverse application needs through different production methodologies and quality standards. --- #### **1. Chemical Composition** The chemical composition remains consistent across all product forms of Alloy 909, ensuring uniform performance characteristics: | Element | Content (%) | |:---|:---| | **Nickel (Ni)** | 38.0 - 41.0 | | **Cobalt (Co)** | 13.0 - 17.0 | | **Iron (Fe)** | Balance | | **Niobium (Nb)** | 4.5 - 5.5 | | **Titanium (Ti)** | 1.3 - 1.8 | | **Silicon (Si)** | 0.40 - 0.80 | | **Aluminum (Al)** | 0.03 max | | **Carbon (C)** | 0.04 max | | **Manganese (Mn)** | 0.50 max | | **Magnesium (Mg)** | 0.003 - 0.012 | | **Sulfur (S)** | 0.004 max | | **Phosphorus (P)** | 0.010 max | | **Boron (B)** | 0.003 max | *Note: The precise control of alloying elements, particularly Niobium and Titanium, ensures consistent age-hardening response and thermal expansion characteristics across all product forms.* --- #### **2. Physical Properties** Alloy 909 maintains consistent physical properties regardless of product form: | Property | Value / Description | |:---|:---| | **Density** | 8.23 g/cm³ (0.297 lb/in³) | | **Melting Range** | ~1430°C (2600°F) | | **Coefficient of Thermal Expansion (CTE)** | **5.9 - 7.1 × 10⁻⁶/°C** (20-400°C) | | **Thermal Conductivity** | 11.5 W/m·K (at 100°C) | | **Specific Heat** | 460 J/kg·K (at 100°C) | | **Modulus of Elasticity** | 148 GPa (21.5 × 10⁶ psi) | | **Magnetic Permeability** | Essentially non-magnetic | --- #### **3. Mechanical Properties (Typical for Aged Condition)** Mechanical properties may vary slightly depending on product form and specific heat treatment: | Property | Typical Range | |:---|:---| | **Tensile Strength** | 1100 - 1310 MPa (160 - 190 ksi) | | **Yield Strength (0.2% Offset)** | 960 - 1170 MPa (139 - 170 ksi) | | **Elongation** | 12% - 20% | | **Reduction of Area** | 25% - 45% | | **Hardness (Rockwell C)** | 32 - 40 HRC | --- #### **4. Other Product Forms & Applications** **Available Product Forms:** - **Bar & Wire:** For machining of precision components - **Pipe & Tube:** For high-temperature fluid systems - **Billet & Bloom:** For subsequent forging operations - **Custom Fabricated Parts:** Machined to customer specifications - **Fasteners:** Bolts, nuts, and specialized connectors - **Welding Wire:** For joining similar alloys **Applications Across Industries:** * **Aerospace:** - Engine mounting systems - Exhaust components - Structural supports in temperature-varying environments * **Power Generation:** - Gas turbine components - Nuclear reactor instrumentation - Heat exchanger parts * **Automotive & Racing:** - Turbocharger assemblies - High-temperature exhaust systems - Performance engine components * **Industrial & Precision Instruments:** - Laser and optical mounting systems - Precision measurement equipment - Process control instrumentation --- #### **5. International Standards & Specifications** Alloy 909 is covered by numerous international standards, with specific specifications varying by product form: **Material Standards:** - **UNS N19909**: Unified Numbering System designation - **AMS 5891**: Aerospace Material Specification for bars, forgings, and rings - **ASTM B709**: Standard specification for strip and sheet - **ASTM B710**: Standard for welded pipe and tube - **DIN 2.4547**: German industrial standard designation **Quality & Processing Standards:** - **AS9100**: Aerospace quality management system - **ISO 9001**: Quality management system requirements - **NADCAP**: National Aerospace and Defense Contractors Accreditation Program for special processes **Regional Equivalents:** - **Europe:** Werkstoff Nr. 2.4547 - **France:** AFNOR NC19FeD - **UK:** BS HR 10 --- #### **6. Key Technical Advantages** * **Consistent Thermal Performance:** Maintains low CTE across all product forms and temperature ranges * **Versatile Manufacturing:** Suitable for various manufacturing processes including machining, welding, and forming * **High Temperature Capability:** Retains mechanical properties up to 650°C (1200°F) * **Age-Hardenable:** Can be heat treated to achieve required mechanical properties * **Excellent Fatigue Resistance:** Superior performance under cyclic loading conditions * **Corrosion Resistance:** Good resistance to oxidation and various corrosive environments --- #### **7. Special Considerations** **Heat Treatment:** All product forms typically undergo solution treatment at 980°C (1800°F) followed by aging at 720°C (1330°F) for 8 hours, then furnace cooling to 620°C (1150°F) and holding for 8 hours before air cooling. **Machining:** Can be machined using techniques similar to other age-hardenable superalloys, with recommended use of carbide tools and adequate cooling. **Welding:** Can be welded using GTAW (TIG) and GMAW (MIG) processes with matching filler metals, preferably in solution-annealed condition. Alloy 909's comprehensive specification coverage and availability in multiple forms make it a versatile choice for engineers designing critical components requiring dimensional stability across wide temperature ranges.

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 1998 gallon liquid totes Special package is available on request.