In the realm of superalloys, Inconel 625 round bar (UNS N06625) stands undoubtedly as a true titan. Distinguished by its extraordinary combination of high strength and exceptional corrosion resistance, it has emerged as an indispensable workhorse material in critical, high-stakes engineering applications.
However, for design engineers and quality auditors, the primary pain point lies in "metallurgical uncertainty." Are the results of chemical heat analysis sufficiently precise to effectively prevent localized pitting corrosion? Does the material's grain size truly meet the rigorous requirements of the AMS 5666 standard? At Gnee Alloy, we have completely eliminated these risks. The properties of our Inconel 625 material are rigorously verified by independent laboratories, thereby ensuring absolute structural integrity.
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Inconel 625 Round Bar: Purchasing Guide
Inconel 625 Round Bar: Purchasing Guide
When procuring Inconel 625 round bars, it is imperative to pay strict attention to material specifications (AMS 5666, ASTM B446) and heat treatment conditions (annealed or solution-annealed), while also ensuring complete traceability. Given this alloy's exceptional corrosion resistance and high-temperature strength, it is in high demand across the aerospace, marine engineering, and oil and gas industries, and commands a premium market price.
| Standard |
ASTM, UNS, ASME, UNS, ANSI, EN |
|---|---|
| Shape |
Round rod square rod |
| Application |
Marine, seawater, chemical, petrochemical, heat exchangers, oil and gas, and acid production industries |
What is the maximum service temperature for Inconel 625?
For high-temperature applications requiring continuous resistance to oxidation and scaling, the recommended maximum service temperature for Inconel 625 is 1800°F (982°C). While the alloy can occasionally withstand extremely brief temperature spikes reaching up to 2000°F (1093°C), prolonged exposure to environments exceeding 1800°F (982°C) increases the risk of oxidation and metallurgical structural changes.
1. Specification Of UNS N06625 Inconel 625 Bar
| Specifications | ASTM B446 / ASTM SB446 |
| size | 2-100mm A/F |
| Round bar size | Diameter: 3-~800mm |
| Hollow Bar | 32mm OD x 16mm ID to 250mm OD x 200mm ID) |
| Finish | Cold (bright) drawn, centreless ground, hot rolled, smooth turned, peeled, slit rolled edge, hot rolled annealed, Rough Turned, Bright, Polish, Grinding, Centreless Ground & Black |
| Tolerance | H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per customers' requirements |
| Surface | Hot Rolled Pickled, Bright, Sand Blasting Finished, Cold Drawn, Hairline, Polished |
| Condition | Hardened & tempered, annealed |
| Technique | Inconel 625 Cold Drawn, Hot Rolled, Forged Round Bar, Cold Rolled, Rod |
| Processing | Bar cutting to 650mm |
| Form | Round, Welding Rod, T-Bar, Rod, Precision Ground Bar, Channel Bar, Square, Flat Bar, Blocks, Round Rod, Hollow, Rings, Rectangle, Hex (A/F), Triangle, Threaded, Profiles, Billet, Ingot, I/H Bar, Half Round Bar, Forging etc. |
What ASTM Standard Can Gnee Alloy Suppliers Provide?
| Standard Number | Product Form | Description |
| ASTM B446 | Bar, Wire | Specifies chemical composition, mechanical properties , dimensional tolerances, and test methods. |
| ASTM B564 | Forged Bar | Covers chemical composition, mechanical properties, non-destructive testing, and quality assurance for forged products. |
2. Inconel Alloy 625 Round Bar Chemical Composition
| Min | Max | |
| Ni | Bal | – |
| Cr | 20 | 23 |
| Fe | – | 5 |
| Mo | 8 | 10 |
| Nb+Ta | 3.15 | 4.15 |
| C | – | 0.1 |
| Mn | – | 0.5 |
| Si | – | 0.5 |
| Ph | – | 0.015 |
| S | – | 0.015 |
| Al | – | 0.4 |
| Ti | – | 0.4 |
| Co | – | 1 |
3. Mechanical Properties of Inconel 625 Bars
| Density | 8.4 g/cm3 |
| Melting Point | 1350 °C (2460 °F) |
| Tensile Strength | Psi – 135,000 , MPa – 930 |
| Yield Strength (0.2%Offset) | Psi – 75,000 , MPa – 517 |
| Elongation | 42.50% |
Click to download the Inconel 625 alloy PDF file now
4. Inconel 625 Round Bar Equivalent Grades
| STANDARD | Inconel 625 |
| UNS | N06625 |
| WERKSTOFF NR. | 2.4856 |
| GOST | ХН75МБТЮ |
| AFNOR | NC22DNB4M |
| JIS | NCF 625 |
| BS | NA 21 |
| EN | NiCr22Mo9Nb |
| OR | ЭИ602 |
Global Standard Mapping:
Aviation Grade: Fully compliant with AMS 5666.
Industrial Standard: Adheres strictly to ASTM B446 / ASME SB446.
Oil & Gas: Specifically processed to meet NACE MR0175 / ISO 15156 for sour gas environments.
5. Industrial Applications of Inconel 625 Rods
Our high-purity Inconel 625 rods power the world's most critical high-stakes sectors:
Aerospace: Engine exhaust systems, fuel line bellows, and turbine shroud rings where High-Cycle Fatigue is the main threat.
Oil & Gas: Wellhead components and downhole tools requiring extreme resistance to hydrogen embrittlement.
Marine Engineering: Propulsion motors, subsea manifolds, and splash-zone fasteners (Immune to seawater).
Chemical Processing: Reactor vessels handling aggressive hydrochloric and phosphoric acids.
6. Value-Added Services Provided by Gnee Alloy
Inconel 625 Bar Value-Added Services Provided
7. Inconel 625 Round Bar Price
| Inconel Alloy 625 Round Bar Price List | PACK QTY | PRICE |
|---|---|---|
| Price of Alloy 625 Round Bar 10.0mm dia x 500mm long | 1 | £65.00 |
| Price of Alloy 625 Round Bar 10.0mm dia x 500mm long | 2 | £96.00 |
| Price of Alloy 625 Hex Bar / Rod 10mm (A/F) x 1000mm Length | 1 | $101.16 |
| Price of Alloy 625 Hex Bar / Rod 10mm (A/F) x 1000mm Length | 3 | $258.52 |
Please note: Prices are subject to change without prior notice.
Why Choose Gnee as Your Nickel-Based Alloy Supplier
✅️Direct Factory Price: Eliminate markups from trading agents and secure the best wholesale rates.
✅️Zero-Defect Inspection: 100% Ultrasonic Tested (AMS 2154 Class A) to ensure zero internal voids.
✅️Wholesale Inventory: Massive stock of forged and precision ground rods (10mm to 300mm) ready for Fast Global Shipping.
✅️Custom Fabrication: We offer precision centerless grinding (h8-h11 tolerances) and cut-to-length services.
Gnee Alloy inconel 625 Certificate
📦 Packaging and Shipping
All Nickel Based Alloy products are packaged using the following methods:
Wooden pallets or crates
Moisture-proof packaging
Labels with furnace number, standard, and size labels
Shipped worldwide by sea, air, or express
Gnee Alloy 625 Alloy Product Packing
Contact us for the latest export price quote for 625 Alloy
FAQ
Q1: Is Inconel 625 equivalent to 2.4856?
A: Yes. 2.4856 is the Werkstoff number used within the German/DIN system for the exact same metallurgical system as UNS N06625. We provide documents proving total parity with both standards.
Q2: Does your Alloy 625 rod meet NACE MR0175 for sour gas service?
A: Absolutely. For oil and gas orders, we follow specialized solution-annealing protocols to keep the hardness within the NACE limits, ensuring the material is resistant to sulfide stress cracking.
Q3: Why is VIM+VAR melting critical for aerospace fasteners?
A: Centrifugal stress in engines is extreme. Standard alloys can harbor microscopic inclusions that act as initiators for fatigue cracks. VIM+VAR removes these "hidden killers," providing the absolute Industrial Durability your flight safety requires.
Q4: Do you support small trial orders for R&D?
A: Yes. As a Reliable Supplier, we support innovation. We offer Flexible MOQs on our in-stock inventory for material validation and laboratory testing.
