Product Overview
Fe-Ni-Mo-250 Industrial Iron Superalloy is a high-performance, hot-rolled plate engineered for extreme environments demanding exceptional strength, corrosion resistance, and thermal stability. As a premium-grade iron-based superalloy material, it delivers superior mechanical properties at elevated temperatures and under aggressive chemical exposure — making it ideal for mission-critical components in oil & gas, petrochemical, and power generation industries. Compliant with ASTM B637 and certified to NACE MR0175/ISO 15156 for sour service applications, this hot-rolled iron superalloy ensures long-term reliability in H₂S-containing environments where stress corrosion cracking (SCC) and sulfide stress cracking (SSC) pose severe risks.
Manufactured via precision hot-rolling to a maximum thickness of 250 mm, the plate maintains uniform microstructure, tight dimensional tolerances, and excellent through-thickness homogeneity. Its balanced Fe–Ni–Mo composition (with controlled additions of Cr, Al, Ti, and Nb) enables outstanding resistance to pitting, crevice corrosion, and oxidation up to 700°C — all while retaining high yield strength and creep resistance. As a versatile superalloy material, Fe-Ni-Mo-250 serves as a cost-effective alternative to nickel-dominant alloys without compromising performance in demanding industrial settings.
Key Features
- Fully compliant with ASTM B637 and NACE MR0175/ISO 15156 for sour service qualification
- Hot-rolled iron superalloy with exceptional resistance to sulfide stress cracking (SSC) and hydrogen-induced cracking (HIC)
- High strength-to-density ratio and excellent creep resistance up to 700°C
- Superior pitting and crevice corrosion resistance in chloride- and H₂S-rich media
- Customizable thickness (up to 250 mm), surface finish (pickled, blasted, or ground), and edge condition
- Full traceability with mill test reports (MTRs) per EN 10204 3.1 or 3.2
Technical Specifications
| Parameter |
Value |
| Standard |
ASTM B637, NACE MR0175/ISO 15156 |
| Base Alloy System |
Fe-Ni-Mo (Iron-Based Superalloy) |
| Max Thickness |
250 mm |
| Form |
Hot-Rolled Plate |
| Tensile Strength (RT) |
≥ 930 MPa |
| Yield Strength (0.2% Offset) |
≥ 620 MPa |
| Elongation (A50 mm) |
≥ 25% |
| Hardness |
28–34 HRC |
| Corrosion Resistance |
Passes NACE TM0177 Method A (SSC) & TM0316 (HIC) |
| Heat Treatment |
Solution Annealed + Rapid Cooled |
| Density |
7.95 g/cm³ |
| Typical Applications |
Valve bodies, wellhead equipment, downhole tools, reactor internals, sour service flanges |
Applications
This Fe-Ni-Mo-250 superalloy material is widely deployed across upstream and midstream oil & gas infrastructure — especially in subsea manifolds, Christmas trees, and sour gas compression systems. It is also specified for critical components in sulfur recovery units (SRUs), hydroprocessing reactors, and geothermal energy systems where hot-rolled iron superalloy performance meets stringent NACE MR0175 requirements. Due to its weldability and machinability (with proper procedures), it supports complex fabrication of large-scale pressure parts, making it a preferred choice among OEMs and EPC contractors seeking certified, high-integrity superalloy materials for harsh-service applications.
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