INCOLOY A-286 Heat Resistance Fastners Steam Turbine Parts Aerospace Application
INCOLOY A-286 is a superalloy widely recognized for its high strength and excellent fabrication characteristics, especially significant for producing fasteners used in high-temperature applications. This iron-based alloy, primarily consisting of iron, nickel, and chromium, is augmented with titanium and molybdenum to enhance its properties.
- High-Temperature Performance: Capable of operating in temperatures up to 700°C (1300°F), making it suited for turbine and engine parts where high thermal stability is required.
- Excellent Creep Resistance: Retains mechanical strength under prolonged exposure to high stresses at elevated temperatures.
- Good Tensile Strength: Provides high yield strength and ultimate tensile strength, essential for fasteners that must maintain tight clamping forces under thermal cycling.
- Oxidation and Corrosion Resistance: Protects against environmental degradation in high-temperature conditions.
- Age-hardening Capabilities: Allows for the strengthening of the material through heat treatment without significantly reducing ductility.
- Aerospace: INCOLOY A-286 is extensively used in the manufacture of aircraft engine components and turbocharger rotor shafts, where high-temperature resistance is critical.
- Automotive: High-performance automotive applications such as exhaust systems and turbocharger components.
- Power Generation: In gas turbine components, where operating temperatures can be extreme.
- Oil & Gas Industry: Used in offshore drilling platforms for fasteners and other components that must withstand high pressures and temperatures.
Chemical Composition(%):
| Grade | UNS | Density | Tensile Strength (MPa min) | Yield Strength (MPa min) | Reduction of Area min (%) | Elongation min (%) | Hardness (HRC) |
| INCOLOY A-286 | S66286 | 7.94 | 895MPa min | 585MPa min | 18% | 18% min | HRC24-37 |
| Ni | Cr | Fe | C | Mn | S | Si |
| 24.0-27.0 | 13.5-146.0 | Remainder | 0.08max | 2.0max | 0.03max | 1.0max |
| B | P | Mo | Ti | Al | V | |
| 0.001-0.1 | 0.04max | 1.0-1.5 | 1.9-2.35 | 0.35max | 0.1-0.5 | |
