Inconel 625 Flat Bars
nconel 625 flat bars are high-performance nickel-chromium-molybdenum-niobium alloy sections engineered for extreme corrosion resistance and high-temperature strength. The alloy’s chemistry (high nickel base with ~20–23% chromium, 8–10% molybdenum and ~3.15–4.15% niobium+ta) delivers remarkable resistance to pitting, crevice corrosion and chloride-induced stress-corrosion cracking, while maintaining excellent tensile and creep properties across a wide temperature range. These characteristics make Inconel 625 flat bars a preferred choice where long service life in aggressive environments is required..
Rose Metal Industries manufactures, stocks and exports Inconel 625 flat bars in a wide range of widths, thicknesses and finishes to meet project and OEM needs. Production follows strict metallurgical controls — approved mill melts, solution annealing, finish rolling/cold-working where required, and surface treatment such as pickling or polishing. Each batch is fully traceable with mill test certificates (MTR / EN 10204) and can be supplied with PMI/chemical analysis and mechanical test reports for critical applications in energy, petrochemical, marine and aerospace sectors..
Mechanically, Inconel 625 flat bars exhibit high tensile strength (typically ~800–950 MPa range depending on condition and section), good 0.2% proof/yield strength (~400–520 MPa), and elongation values that support forming and welding operations (commonly ≥30% in annealed condition). The alloy retains useful strength at elevated temperatures and resists softening in continuous high-temperature service, while also performing well in cryogenic conditions. The material welds readily with standard nickel-based filler metals and usually does not require post-weld heat treatment for corrosion performance..
Typical applications for Inconel 625 flat bars include seawater and desalination plant components, heat exchanger structural supports, pump and valve bodies, furnace and thermal processing fixtures, subsea frames and brackets, and critical fabrication parts in petrochemical and offshore installations. The combination of structural form factor (flat bar) and corrosion/temperature resistance makes these bars ideal for both structural and fabrication uses where exposure to aggressive media or thermal cycling would quickly degrade ordinary stainless steels..
✔ Specification of Inconel 625 Flat Bars
| Standard | ASTM B443, ASTM B446, ASME SB443 / SB446 |
| Material | Inconel Alloy 625 |
| Form | Hot Rolled, Cold Drawn, Annealed, Polished |
| Size Range | 3 mm to 200 mm width |
| Thickness | 2 mm to 100 mm |
| Finish | Black, Bright, Polished, Custom |
✔ Chemical Composition (Inconel 625)
| Ni | 58.0 min |
| Cr | 20 – 23% |
| Mo | 8 – 10% |
| Nb + Ta | 3.15 – 4.15% |
| Fe | 5% max |
| C | 0.10% max |
| Mn | 0.50% max |
| Si | 0.50% max |
✔ Mechanical Properties
| Tensile Strength | 830 MPa min |
| Yield Strength (0.2% offset) | 415 MPa min |
| Elongation | 30% min |
| Density | 8.44 g/cm³ |
| Melting Point | 1290–1350°C |
✔ Equivalent Grades
| UNS | N06625 |
| Werkstoff Nr. | 2.4856 |
| EN | Alloy 625 |
| BS | NA 21 |
✔ Dimension Chart
| Width (mm) | Thickness (mm) | Length |
|---|---|---|
| 20 – 50 | 3 – 12 | 1–6 Meter |
| 50 – 100 | 5 – 20 | 1–6 Meter |
| 100 – 200 | 10 – 50 | Custom |
✔ Applications
- Offshore platforms & marine engineering (Tamilnadu, Karnataka coasts)
- Chemical & petrochemical industry in Andhra Pradesh & Telangana
- Aerospace engine components
- Heat exchangers & furnace parts
- Desalination plants & seawater systems in Puducherry & Andaman
- Power generation & pollution control equipment
Inconel 625 flat bars are engineered to deliver exceptional resistance to oxidation and carburization, even in prolonged high-temperature exposure. This makes them suitable for demanding furnace hardware, petrochemical heater components and thermal processing fixtures. Unlike stainless steels, which can lose stability or form scale in extreme heat, Inconel 625 maintains a protective oxide layer that resists breakdown, ensuring reliability and long service life under cyclic thermal loads...
Another advantage of Inconel 625 flat bars is their performance in high-pressure and high-stress environments. The alloy’s solid-solution strengthening via molybdenum and niobium provides excellent rupture strength and outstanding resistance to creep deformation. This combination allows fabricators and engineers to design lighter, more efficient components without compromising safety or durability — particularly valuable in offshore platforms, refinery systems, and aerospace assemblies.
Frequently Asked Questions (FAQ)
Q1: What makes Inconel 625 suitable for marine and offshore applications?
A: Its high nickel, chromium, and molybdenum content ensures excellent resistance to seawater corrosion, pitting, and crevice attack.
Q2: Do you provide test certificates?
A: Yes, Rose Metal Industries provides MTC (EN 10204 3.1), chemical analysis, mechanical tests, and third-party inspection reports.
Q3: Can Inconel 625 Flat Bars withstand high-temperature environments?
A: Yes, they maintain superb strength and oxidation resistance up to 980°C.
Q4: Do you offer custom sizes and cut-to-length services?
A: Yes, we offer tailor-made sizes, surface finishes, and precision-cut lengths as per project requirements.
Q5: Which industries commonly use these flat bars?
A: Offshore, petrochemical, aerospace, energy, shipbuilding, and desalination industries.