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PRODUCTS
Product Details
Incoloy 901
High-Temperature Superalloy, Age-Hardenable Ni-Fe-Cr Alloy, Turbine-Grade Alloy 901, Aerospace Nickel Alloy.Incoloy 901 — UNS N09901; W.Nr. 2.4662; also known as Alloy 901, Nimonic 901, Nickel-Iron-Chromium Superalloy.
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Category
Nickel Alloy
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Grade
Incoloy 901 / UNS N09901 / 2.4662
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Standard
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Product Form
ASTM B637 / AMS 5660 / AMS 5661 / Customer Specification
Forged Bar / Billet / Ring / Disk / Shaft / Rotor Components / Fasteners / Precision Forgings
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Thickness
5–200 mm
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Width
Custom
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Length
1000–6000 mm
Features
Incoloy 901 is a precipitation-hardenable nickel-iron-chromium superalloy developed for applications requiring high mechanical strength and structural stability at elevated temperatures. Its alloying system includes titanium, molybdenum and aluminum to develop strong precipitation-hardening characteristics.
Titanium and aluminum contribute to the formation of strengthening precipitates, while molybdenum provides additional solid-solution strengthening. This combination allows Incoloy 901 to maintain good tensile, fatigue and creep properties under demanding thermal and mechanical loading.
The alloy is particularly suitable for rotating components where high strength and fatigue resistance are required at elevated temperatures. Controlled heat treatment is important for obtaining the desired balance of strength, ductility and structural stability.
Typical applications include turbine disks, compressor components, shafts, rotors, rings and other highly stressed parts used in aircraft engines, industrial gas turbines and power-generation equipment.
Surface Finish | Forged / Ground / Peeled / Polished / Machined |
Technique | Hot Forged / Hot Rolled / Solution Treated / Age Hardened / Machined |
Applications | Gas Turbines, Aircraft Engines, Turbine Disks, Compressor Components, Rotors, Shafts, High-Temperature Fasteners, Power Generation Equipment |
High mechanical strength
Excellent high-temperature strength
Precipitation-hardening capability
Good creep resistance
Excellent fatigue performance
Good stress-rupture properties
Good structural stability
Suitable for highly stressed rotating components
Good performance under thermal and mechanical loading
Widely used in gas turbine components
Chemical Composition (%)
Mechanical Properties (Typical)
Element | Composition (%) |
Ni | 40.0–45.0 |
Cr | 11.0–14.0 |
Fe | Balance |
Mo | 5.0–6.5 |
Ti | 2.35–3.10 |
Al | ≤ 0.35 |
Co | ≤ 1.00 |
Mn | ≤ 1.00 |
Cu | ≤ 0.50 |
Si | ≤ 0.40 |
C | 0.02–0.06 |
B | 0.010–0.020 |
S | ≤ 0.030 |
Property | Typical Value |
Tensile Strength | Approx. 1,100–1,300 MPa |
Yield Strength (0.2%) | Approx. 750–950 MPa |
Elongation | Approx. 12–20% |
Hardness | Approx. 300–400 HB |
Density | Approx. 8.14 g/cm³ |
Melting Range | Approx. 1280–1345°C |
Mechanical properties may vary depending on product form, dimensions, heat-treatment condition, and applicable material specification.