ASTM B166 Inconel 601 Bar Supplier | 100% MTC 3.1 Certified

ASTM B166 Inconel 601 Bar Supplier | 100% MTC 3.1 Certified
In high-risk industries such as aerospace, nuclear power, and petrochemicals, losses from material failure far exceed the cost of the material itself. For quality-oriented procurement, Inconel 601 (UNS N06601) bars conforming to ASTM B166 are more than just metal; they are a guarantee of safety and structural integrity.
As a Tier 1 supplier, Gnee Steel focuses on producing 601 alloy round bars that not only "conform" to international standards but are also meticulously designed to exceed them. With 100% compliance and full traceability, we can provide readily auditable documentation to meet the most demanding projects worldwide.
What is Inconel 601 material?
INCONEL nickel-chromium-iron alloy 601 (UNS N06601/W.Nr. 2.4851) is a general-purpose engineering material suitable for applications requiring heat and corrosion resistance. A notable characteristic of INCONEL alloy 601 is its excellent resistance to high-temperature oxidation.

1. In-depth Analysis: The Rigor of the ASTM B166 Standard
ASTM B166 is the authoritative specification for nickel-chromium-aluminum alloy (UNS N06601) bars, strips, and wires. Our production process strictly adheres to the following key parameters:
Chemical Composition: We employ a vacuum induction melting (VIM) process to ensure a precise balance of nickel content between 58-63% and aluminum content between 1.0-1.7%, guaranteeing the formation of a self-healing oxide layer.
Mechanical Properties: Each bar undergoes rigorous testing for tensile strength (minimum 80 ksi), yield strength (minimum 30 ksi), and elongation (minimum 30%) to ensure structural stability at 1180°C.
Dimensional Tolerances: Whether cold-drawn or hot-finished, our bars meet the ultra-strict diameter and straightness tolerances required for precision CNC machining.
🛠️ [Click here to learn more about Inconel 601 round bar quality audit]

2.Inconel 601 Round Bar Specification
| Standards | ASTM B166, ASME SB 166, AMS 5715 |
|---|---|
| Specifications | DIN 17752, DIN 17753, DIN 17754, EN10095, ISO9723, ISO 9724, ISO 9725; DIN, EN, ASTM, JIS, ASME, BS, AISI |
| 601 Inconel Round Bars size | Diameter: 3-~800mm |
| Inconel 601 Flat Bars size | Thickness: 2 -100mm |
| Width: 10 to 500mm | |
| Inconel 601 Angle Bars size | 3mm*20mm*20mm~12mm*100mm*100mm |
| Inconel 601 Channel Bars | 80 x 40mm to 150 x 75mm section; 5.0 to 6.0mm thickness |
| Alloy 601 Rectangular Bars Section | 3.0 to 12.0mm thickness |
| Inconel 601 Billet Size | 1/2 to 495mm Diameter |
| Inconel 601 Rectangle Bar Size | 33 x 30mm to 295 x 1066mm |
| Inconel 601 Hex Bar size | 2-100mm A/F |
| Inconel 601 Hollow Bars | 32mm OD x 16mm ID to 250mm OD x 200mm ID) |
| Diameter | 20mm, 30mm, 50mm, 80mm, 100mm, 150mm, 200mm, 500mm |
| Length | 1m-12m or as required |
| Tolerance | H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients' requirements |
| Finish | hot rolled annealed, peeled, Bright, hot-worked and cold-worked rod and bar, centreless ground, Centreless Ground and Black, Polish, Cold Rolled (CR), hot rolled ( R), smooth turned, Cold (bright) drawn, Grinding, slit rolled edge, Rough Turned. |
| Surface | Hot Rolled Pickled, Bright, Sand Blasting Finished, Cold Drawn, Hairline,Polished |
| Condition | Hardened & tempered, annealed |
| Technique | Cold Drawn, Hot Rolled, Forged Round Bars, Cold Rolled, Rod |
| Processing | Bars cutting to 650mm |
| Form | Rod, Round, Channel Bars, T-Bars, Flat Bars, Precision Ground Bars, Blocks, Square, Round Rod, Triangle, Hollow, Rectangle, Threaded, Hex (A/F), Profiles, Half Round Bars, Ingot, Billet, I/H Bars, Forging etc. |
ASTM B166 601 Inconel Bars Equivalent Grades
| STANDARD | UNS | WERKSTOFF NR. | AFNOR | EN | JIS | BS | GOST | OR |
| Inconel 601 | N06601 | 2.4851 | NC23FeA | NiCr23Fe | NCF 601 | NA 49 | XH60BT | ЭИ868 |
Inconel UNS N06601 Round Bars Chemical Composition
| GRADE | Ni | C | Fe | Si | Mn | S | Cu | Cr |
| Inconel 601 | 58.0 – 63.0 | 0.10 max | Balance | 0.5 max | 1.0 max | 0.015 max | 1.0 max | 21.0 – 25.0 |
Inconel Alloy WERKSTOFF NR. 2.4851 Bars Mechanical Properties
| Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 8.1 g/cm3 | 1411 °C (2571 °F) | Psi – 30,000 , MPa – 205 | Psi – 80,000 , MPa – 550 | 30 % |
3. Quality Transparency: Factory Test Certificate (MTC)
In the B2B sector, batch consistency is verified through documentation. We provide a comprehensive factory test certificate (MTC EN 10204 3.1) for each shipment, including:
Complete chemical composition analysis.
Mechanical property test results (tensile strength, yield strength, elongation, hardness).
Non-destructive testing (NDT) results (ultrasonic testing and eddy current testing).
Surface condition and dimensional verification.




3. Third-Party Inspection & Global Compliance
We welcome the scrutiny of global quality watchdogs. As a reliable global supplier, we fully support Third-party inspection (TPI) to give our clients absolute peace of mind.
Approved Partners: Regular cooperation with SGS, TUV, Bureau Veritas (BV), and Lloyd's Register.
Witnessed Testing: We facilitate onsite witnessed testing for chemical PMI and ultrasonic flaw detection.
International Standards: Fully compliant with European PED 2014/68/EU and North American ASME SB166 specifications.

4. Why Choose Gnee Steel?
100% Traceability: From the raw melt to the final polished bar, every millimetric piece of Inconel 601 is tracked by a unique heat number.
Tier-1 Manufacturing: By eliminating trading companies, we offer factory-direct pricing while maintaining total control over the quality process.
Proven Track Record: Our materials are currently in service in major refineries and power plants across Germany, Italy, Brazil, and the USA.
📜 Download Sample MTC and Quality Certificates
📦 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
Contact us for the latest export price quote for Inconel 601 metal
FAQ
Q: Can you provide EN 10204 3.2 certification?
A: Yes. While 3.1 is the standard certification, we can also assist with EN 10204 3.2 certification. This certification requires the testing process to be witnessed and certified by an independent inspector from an external authority (such as TUV or SGS).
Q: Do you perform Positive Composition Identification (PMI) on every rebar?
A: Absolutely. 100% PMI testing is an integral part of our final inspection process to ensure no material contamination and 100% accurate aluminum-nickel chemical composition.
Q: How do you handle ultrasonic testing (UT) for large-diameter rebar?
A: For all ASTM B166 rebar with a diameter greater than 50 mm, we perform ultrasonic testing (UT) according to ASTM A388 to detect any internal voids, cracks, or non-metallic inclusions, thus ensuring a "zero-defect" internal structure.





