UNS N06625 (Inconel 625) Nickel Alloy Manufacturer
Generic Name & Other Designation
Inconel 625®, Alloy 625, Nickel Alloy 625, W.Nr. 2.4856, NiCr22Mo9Nb, NC22FeDN
Available Forms and Standards of Inconel 625
Plates&Sheets | Ingots&Bars | Pipes&Tubes | Flanges&Forgings | Pipe Fittings | Strips&Coils | Wires
Inconel 625 are available in Grade 1 and Grade 2 for applicable product forms.
We also supply Inconel 625 materials for various heat exchanger components, including forged tube sheets, baffle plates, and seamless or welded heat exchanger tubes, in accordance with project requirements.
ASTM Standards: Plates, sheets & strips (ASTM B443); bars & rods (ASTM B446); seamless pipes & tubes (ASTM B444); welded pipes (ASTM B705); welded tubes (ASTM B704); fittings (ASTM B366); flanges & forgings (ASTM B564).
EN, DIN, JIS, and customized specifications available upon request.
Why Choose Us–Belnade
🏭 Direct Factory Manufacturing ⚙️ Strict Quality Control
💰 Competitive Pricing 🚚 Reliable Lead Time & Delivery
📋 EN 10204 3.1 & Third-Party Inspection Support 🏢 Customized Solutions & Flexible Order Support
UNS N06625 Grade Overview
UNS N06625 is a highly versatile nickel-chromium-molybdenum-niobium superalloy engineered for environments where severe mechanical stress coincides with highly corrosive chemical or marine conditions. Unlike age-hardenable alloys, Alloy 625 gains its high mechanical strength directly through solid-solution strengthening, allowing it to maintain excellent ductility and toughness without delicate thermal processing.
The alloy exhibits immunity to chloride-ion stress-corrosion cracking and resists a broad spectrum of aggressive media, including phosphoric acid, hydrofluoric acid, wet chlorine gas, and boiling nitric acid.
Key Highlights of UNS N06625
✅ Solid-Solution Matrix Strengthening: Exceptional structural stability derived from the stiffening effect of molybdenum and niobium within a nickel-chromium matrix—eliminating the necessity for precipitation hardening heat treatments.
✅ Superior Resistance to Pitting & Crevice Attack: Outstanding resistance to severe localized corrosion and chloride-induced stress corrosion cracking, featuring a Pitting Resistance Equivalent Number (PREN) exceeding 45.
✅ Broad-Temperature Mechanical Integrity: Retains robust mechanical performance and fatigue resistance across operational conditions, ranging from cryogenic temperatures up to 982°C (1800°F).
✅ Exceptional Fabricability & Weldability: Easily formed and joined using standard welding processes (GTAW/GMAW) without post-weld cracking or loss of corrosion resistance in the heat-affected zone.
✅ Export-Ready Global Supply: Supplied directly by BELNADE with full traceabilty, custom conversion, and dual-certification to international specifications (ASTM, ASME, AMS, NACE).
Chemical Composition & Physical Properties
1. Chemical Composition (Weight %)
| Element | Ni | Cr | Mo | Nb + Ta | Fe | Co | Mn | Si | Al | Ti | C | P | S |
| Min. | 58.0 | 20.0 | 8.0 | 3.15 | — | — | — | — | — | — | — | — | — |
| Max. | — | 23.0 | 10.0 | 4.15 | 5.0 | 1.0 | 0.50 | 0.50 | 0.40 | 0.40 | 0.10 | 0.015 | 0.015 |
2. Physical & Mechanical Attributes
Property | Value (Metric) | Value (Imperial) | Condition / Standard |
| Density | 8.44 g/cm³ | 0.305 lb/in³ | — |
| Melting Range | 1290°C – 1350°C | 2350°F – 2460°F | — |
| Tensile Strength (Rm) | ≥ 760 MPa | ≥ 110 ksi | Grade 1 Annealed |
| Yield Strength (Rp0.2) | ≥ 415 MPa | ≥ 60 ksi | Grade 1 Annealed |
| Elongation (A5) | ≥ 30% | ≥ 30% | Grade 1 Annealed |
| PREN | ≥ 45 | ≥ 45 | Pitting Resistance Equivalent No. |
Typical Application Scenarios of Inconel 625
The balanced chemical formulation of UNS N06625 makes it a primary material selection across diverse engineering sectors:
Marine & Offshore Engineering: Subsea cable sheathing, propulsion propellers, marine riser clamps, sonar domes, and seawater heat exchangers exposed to high velocity flow.
Chemical Processing Equipment: Reaction vessels, column tubing, flare stacks, acid production units, and transfer systems handling mixed acid streams.
Aerospace Ducting & Exhausts: Aircraft ducting systems, engine exhaust ducting, thrust reverser assemblies, and turbine shroud rings.
Pollution Control & Scrubbers: Flue gas desulfurization (FGD) scrubbers, reheaters, stack liners, and wet industrial scrubber systems.
Nuclear Energy: Core components and control rod shrouds operating in high-temperature pressurized water reactors.
Production Process
Certification of Belnade
Trusted Supplier of UNS N06625
Belnade specializes in supplying UNS N06625 (Inconel 625)and other high-performance nickel alloys for global industries. With reliable manufacturing resources, strict quality control, and complete material documentation including EN 10204 3.1 certificates, we support customers with stable supply and customized solutions for demanding applications.
Get in Touch with BELNADE for Quotes and Technical Inquiries
📧 Email: [email protected]
🌐 Website: www.belnade-material.com
💬 Mobile/ WhatsApp: +86 183-6997-5713