Product Overview
Fe-Cr-Al-450 Premium Grade Iron Superalloy is a high-performance, oxidation resistant superalloy engineered for extreme thermal and mechanical environments. Designed to meet stringent aerospace and industrial standards—including AMS 5717 and MIL-DTL-23369—this iron alloys variant delivers exceptional stability up to 1100°C without significant scale formation or microstructural degradation. Its optimized composition (Fe–Cr–Al with controlled trace elements) enables superior resistance to cyclic oxidation, hot corrosion, and creep deformation, making it ideal for mission-critical components where reliability under prolonged high-temperature exposure is non-negotiable.
Unlike conventional stainless steels or nickel-based alternatives, Fe-Cr-Al-450 offers a compelling balance of cost-efficiency, density advantage, and thermal scalability—particularly valuable in large-format forged parts requiring custom geometry and tight metallurgical control. As a leading solution among 1100°C superalloy options, it supports demanding applications across energy, defense, and advanced manufacturing sectors.
Key Features
- Oxidation resistant superalloy with protective alumina (Al₂O₃) scale formation up to 1100°C
- Hardness of 450 HB (Brinell), ensuring excellent wear and abrasion resistance
- Compliant with AMS 5717 and MIL-DTL-23369 specifications for aerospace-grade wrought/forgeable iron alloys
- Optimized for hot forging, precision machining, and post-forging heat treatment (e.g., solution annealing + aging)
- Low thermal expansion coefficient and high thermal conductivity for dimensional stability
- Customizable in billet, bar, ring, or near-net-shape forged configurations
Technical Specifications
| Parameter |
Value |
| Material System |
Iron-Based Superalloy (Fe–Cr–Al) |
| Hardness (HB) |
450 HB (as-forged & heat-treated) |
| Max Continuous Use Temperature |
1100°C in air |
| Oxidation Resistance |
≤0.5 mg/cm² mass gain after 100 h at 1100°C |
| Density |
7.25 g/cm³ |
| Tensile Strength (RT) |
820–950 MPa |
| Yield Strength (RT) |
520–640 MPa |
| Elongation (% in 50 mm) |
18–24% |
| Thermal Expansion (20–1000°C) |
12.8 × 10⁻⁶ /°C |
| Standard Compliance |
AMS 5717, MIL-DTL-23369, ASTM A952 |
| Typical Forging Range |
1050–1180°C |
| Surface Finish Options |
As-forged, machined, shot-peened, passivated |
Applications
This oxidation resistant superalloy is widely deployed in high-temperature structural and functional components, including gas turbine combustor liners, radiant tube supports in industrial furnaces, exhaust manifolds for military engines, heat-treating fixtures, and burner nozzles. Its compatibility with custom forging processes makes Fe-Cr-Al-450 especially suited for OEMs and Tier-1 suppliers seeking AMS 5717-compliant iron alloys for next-generation 1100°C superalloy systems in aerospace propulsion, nuclear heat exchangers, and hydrogen-compatible thermal infrastructure.
EN
