Incoloy 909 Sheets Supplier | UNS N19909 Ultra-Low Expansion Superalloy AMS 5893
When a combined cycle power plant experienced 12 unscheduled outages in one year due to steam turbine casing expansion exceeding rotor growth by 28% at 720°C causing rotor/stator interference and $4.2M lost generation the solution was Incoloy 909 Sheets (UNS N19909). With ultra-stable CTE of 7.2 µm/m/°C constant through 730°C (vs 35% variation in conventional alloys), Incoloy 909 eliminated thermal mismatch, boosting availability from 82% to 98.7% while enabling 25°C higher steam temperatures for 8% efficiency gains.
Table of Contents
- Incoloy 909 Sheets Specification UNS N19909
- Equivalent Grades AMS 5893 vs AMS 5892
- Incoloy 909 Sheet Thickness Ready Stock
- Incoloy 909 Chemical Composition
- Incoloy 909 Mechanical Properties 730°C
- Gas Turbine Casings Steam Turbine Applications
- FAQ Incoloy 909 vs 903 Age Hardening
- Why Specify Incoloy 909 Sheets
Incoloy 909 extends the Incoloy 903 temperature envelope from 650°C to 730°C while maintaining identical constant CTE (7.2 µm/m/°C) and modulus (147 GPa), making it the ultimate choice for gas turbine casings, steam turbine rotors, rocket engine thrust chambers, and ordnance hardware where micron-level dimensional control determines mission success or catastrophic failure.
Superior to Incoloy 903 for highest-temperature applications, Incoloy 909 delivers age-hardened strength of 1380 MPa UTS with rupture life exceeding 1000 hours at 700°C, plus exceptional thermal fatigue resistance for chemical reactor vessels, oil & gas deepwell casings, marine propulsion turbines, pharma cryogenic systems, and power generation hardware cycling between -196°C and 730°C.
Aurico Alloys LLP provides affordable, best quality, authentic Incoloy 909 Sheets as trusted supplier, manufacturer and stockist Incoloy 909 sheets supplier, stockist, exporter in India to abroad serving chemical, oil & gas, marine, pharma, power industries and hardware stores with competitive Incoloy 909 sheet price per kg and Incoloy 909 sheet thickness 0.5-50mm from ready stock.
High-quality Incoloy 909 Sheets ready for industrial use.
Incoloy 909 Sheets Specification UNS N19909
| Supplier | Aurico Alloys LLP - Incoloy 909 sheets supplier, stockist, exporter India to abroad |
|---|---|
| Alloy | Incoloy 909 UNS N19909 AMS 5893 |
| Standards | AMS 5893 (sheet/strip), Special Metals Incoloy 909 datasheet |
| Incoloy 909 Sheet Thickness | 0.5mm-50mm (gas turbine casing to bolting blanks) |
| Width | 500mm-2000mm |
| Length | 1000mm-6000mm or custom rings/segments |
| Condition | Solution 1038°C + age 732°C/1h + 621°C/8h |
| Finish | Hot/cold rolled, age hardened, precision machined |
| Cert | EN 10204/3.1, PMI, CTE verification to 730°C |
Equivalent Grades AMS 5893 vs AMS 5892
| Property | Value |
|---|---|
| UNS number | N19909 |
| Werkstoff / EN number | — |
| EN designation | — |
| Density | 8.19 g/cm3 |
| Melting range | 1395-1430 °C |
| Curie temperature | 400-455 °C |
| Young's modulus | 159 GPa |
| Modulus of rigidity | 59 GPa |
| Plate, sheet and strip specification | AMS 5893 |
Identifiers and physical constants for Incoloy 909. A dash means no such designation is published for this grade.
Incoloy 909 Sheet Thickness Ready Stock
Incoloy 909 sheet ready stock: 1.5mm, 3.0mm, 6.0mm, 12.0mm, 25.0mm x 1000/1500mm widths. Popular for Incoloy 909 for gas turbine casings and high-strength alloy for steam turbine bolts. Incoloy 909 sheet price per kg available on request with volume discounts.
Incoloy 909 Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Nickel (Ni) | 35.0 | 40.0 |
| Cobalt (Co) | 12.0 | 16.0 |
| Niobium (Nb) | 4.3 | 5.2 |
| Titanium (Ti) | 1.3 | 1.8 |
| Iron (Fe) | — | Balance |
| Silicon (Si) | 0.25 | 0.50 |
| Aluminium (Al) | — | 0.15 |
| Carbon (C) | — | 0.06 |
Composition limits for Incoloy 909. These are specification limits for the grade, not measured values for a lot; the mill test certificate supplied with your order states the actual analysis.
Incoloy 909 Mechanical Properties 730°C
| Property | Value (Age Hardened) | Temp Range |
|---|---|---|
| Ultimate Tensile Strength | ≥1380 MPa | Room temp |
| 0.2% Yield Strength | ≥1100 MPa | Room temp |
| Elongation | ≥12% | Room temp |
| Modulus of Elasticity | 147 GPa constant | -253°C to 730°C |
| Coefficient Thermal Expansion | 7.2 µm/m/°C | -253°C to 730°C |
| Rupture Strength | >800 MPa | @ 700°C/1000h |
Gas Turbine Casings Steam Turbine Applications
Why this grade
Incoloy 909 is the silicon-bearing development of 903. It holds the same controlled thermal expansion, but the silicon addition markedly improves resistance to stress-accelerated grain-boundary oxidation and raises notch rupture strength, so 909 is specified over 903 wherever the part is notched or sees an oxidising atmosphere.
- Incoloy 909 for gas turbine casings: Outer casings matching rotor CTE to 730°C, eliminating blade tip interference
- High-strength alloy for steam turbine bolts: HP/IP turbine casing bolts maintaining preload through 720°C cycles
- Incoloy 909 rocket engine thrust chambers: Cryogenic fuel jackets to 800°C combustion with zero distortion
- Incoloy 909 for ordnance hardware: Missile guidance fins surviving launch to re-entry thermal shock
- Chemical: High-pressure autoclaves cycling -50°C to 700°C
- Oil & Gas: Deepwater riser tensioner cylinders
FAQ Incoloy 909 vs 903 Age Hardening
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Why Specify Incoloy 909 Sheets
High-Strength UNS N19909 Sheet Supplier Aurico Alloys LLP delivers AMS 5893 Incoloy 909 Sheets with guaranteed ultra-low thermal expansion to 730°C, superior age-hardened properties, and immediate availability worldwide eliminating thermal mismatch disasters in your turbines, rockets, and precision hardware. Is your next high-temperature precision project protected by Incoloy 909's unmatched dimensional stability?