Inconel 725 Sheet / Plate / Coil
Inconel 725 is a nickel-chromium-molybdenum alloy strengthened by niobium and titanium additions, offering exceptional resistance to corrosion, stress corrosion cracking (SCC), and high-temperature oxidation. As a leading Inconel 725 Sheet/Plate/Coil manufacturer, Huaxiao-Alloy supplies this alloy under the following designations:
- UNS N07725
- EN 2.4858
- W. Nr. 2.4858
Huaxiao-Alloy’s Inconel 725 products adhere to globally recognized standards for critical industrial and marine applications:
- ASTM B443 (Plate/Sheet)
- ASTM B444 (Seamless Pipe/Coil)
- ASME SB443
- NACE MR0175/ISO 15156
- DIN 17742
Our Inconel 725 Plate supplier team ensures compliance with certifications such as ISO 9001, API 6ACRA, and PED 2014/68/EU.
Available Product Specifications
| Product Form | Thickness (mm) | Width (mm) | Length (mm) | Surface Finish |
|---|---|---|---|---|
| Sheet | 0.5–40 | 800–3000 | 2000–8000 | Cold-rolled, Annealed |
| Plate | 5–150 | 1500–4000 | 3000–12000 | Hot-rolled, Pickled |
| Coil | 0.5–8 | 400–1800 | Custom | Annealed, Polished |
Custom dimensions and tolerances are available from this Inconel 725 Coil manufacturer.
Mechanical Properties
Inconel 725 excels in aggressive environments, including sour gas and seawater:
- Tensile Strength: 1000–1200 MPa
- Yield Strength (0.2% Offset): 550–750 MPa
- Elongation: 20–30%
- Hardness: 250–320 HB
- Density: 8.22 g/cm³
These properties make Huaxiao-Alloy’s Inconel 725 Sheet ideal for subsea equipment and oilfield applications.
Chemical Composition
| Element | Ni | Cr | Mo | Nb+Ta | Fe | Ti | C | Mn | Si |
|---|---|---|---|---|---|---|---|---|---|
| **% Content** | 58–63 | 19–23 | 7–9.5 | 2.75–4.0 | ≤5.0 | 1.0–1.7 | ≤0.03 | ≤0.35 | ≤0.35 |
The niobium and titanium additions enhance precipitation hardening, a key feature of Huaxiao-Alloy’s Inconel 725 Plate.
Cross-National Designations
| Country | Standard | Equivalent Grade |
|---|---|---|
| USA | ASTM/ASME | UNS N07725 |
| Europe | EN | 2.4858 |
| Japan | JIS | NCF 725 |
| Germany | DIN | W. Nr. 2.4858 |
| China | GB | NS3405 |
As a global Inconel 725 Sheet supplier, we ensure compliance with regional specifications for seamless integration into your projects.
Key Characteristics
- Corrosion Resistance: Exceptional resistance to pitting, crevice corrosion, and sulfide stress cracking (SSC).
- High Strength: Maintains mechanical integrity in temperatures up to 700°C (1292°F).
- Weldability: Compatible with TIG, MIG, and submerged arc welding (SAW).
- Fatigue Resistance: Performs under cyclic loading in harsh environments.
- Hydrogen Embrittlement Resistance: Ideal for sour gas wells and hydrogen-rich applications.
These attributes position Huaxiao-Alloy’s Inconel 725 Coil as a top choice for offshore drilling and chemical processing.
Applications
- Oil & Gas: Downhole tubing, Christmas trees, subsea connectors.
- Marine Engineering: Propeller shafts, seawater valves, desalination systems.
- Chemical Processing: Reactors, heat exchangers, and acid-handling equipment.
- Power Generation: Flue gas desulfurization (FGD) systems, turbine components.
- Aerospace: High-stress fasteners, engine components.
Trust Huaxiao-Alloy, a premier Inconel 725 Plate manufacturer, for materials that withstand extreme operational challenges.
Why Choose Huaxiao-Alloy?
- Industry Leadership: 20+ years of expertise in corrosion-resistant alloys.
- Custom Solutions: Precision machining, heat treatment, and non-destructive testing (NDT).
- Rapid Turnaround: 95% on-time delivery via our global logistics network.
- Certified Quality: Full traceability with Mill Test Certificates (MTCs) and 3.1/3.2 reports.
- Sustainability: Eco-friendly practices aligned with ISO 14001 and RoHS directives.
Our Inconel 725 Sheet supplier team offers 24/7 technical support, including corrosion testing and application engineering.
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FAQs
Solution annealing at 980–1020°C (1796–1868°F) followed by aging at 720°C (1328°F) optimizes strength and corrosion resistance.
Yes, all Inconel 725 products are certified for sour service per NACE MR0175/ISO 15156.
Absolutely. Its high chromium and molybdenum content ensures resistance to chloride-induced pitting and crevice corrosion.
Inconel 725 offers superior strength (yield strength ~750 MPa vs. 550 MPa for 625) due to its precipitation-hardening capability.
Standard stock items ship in 2–3 weeks; custom orders require 6–8 weeks for processing and testing.
