As a trusted manufacturer and supplier, Gnee Steel offers Inconel 601 seamless steel tubing. Inconel 601, also known as 601 alloy, is an austenitic alloy steel tubing primarily composed of nickel (58-63%), chromium (21-25%), and aluminum (1-1.7%), with added iron and controlled levels of carbon, manganese, silicon, sulfur, and phosphorus. We manufacture Inconel 601 seamless steel tubing strictly according to ASTM B167 standards, employing advanced manufacturing processes to ensure dimensional accuracy and comprehensive testing and inspection. This steel tubing exhibits resistance to carburization, stable thermal conductivity, and maintains good mechanical strength even at sustained high temperatures. 601 alloy seamless nickel steel tubing possesses excellent metallurgical stability, resistance to stress corrosion cracking, high creep strength, and reliable stress fracture strength-all properties attributed to its strictly controlled carbon content. Gnee Steel's Inconel 601 tubing solutions are widely used in applications requiring long service life, such as heat exchangers, furnaces, boilers, superheaters, reheaters, and steam turbines.
Gnee Steel's 601 alloy tubing is manufactured to stringent industry standards:
Manufacturing Process of 601 Alloy Seamless Tubes
We employ a precise process to produce 601 alloy seamless tubes to ensure optimal quality and performance. First, the material is hot-extruded into hollow tubes. Then, it is cold-drawn or rolled to achieve precise dimensions. Finally, it undergoes heat treatment to improve strength and grain structure. Click here for full information.
ASTM / ASME Specifications Alloy 601 Seamless pipe
| ASTM Specification | ASTM B167/ ASME SB167, ASTM B163/ ASME SB163, ASTM B 517/ ASME SB517, ASTM B516/ ASME SB516 |
|---|---|
| International Specification |
ISO 6207, DIN 17751, WERKSTOFF Nr 2.4851 |
| Standard | EN, DIN, AISI, AMS, SAE, DTD, DS, NF, JIS, ASME, ASTM, GB, TOCT |
| Seamless Tube Size | 3.35 milimeter To 101.6 milimeter OD |
| Size of Seamless Pipe | Wall thickness.: 0.05- 20 milimeter, 4 - 219 milimeter |
| Size of Welded Pipe | 5.0 to 1219.02 milimeter |
| size of EFW Pipe | 5.0 to 1219.02 milimeter |
| Welded Tube Size | 6.35 milimeter To 152 milimeter OD |
| Bwg & Swg | 18 Swg., 14 20 Swg., Swg. Swg., 12 16 Swg., 10 Swg. |
| Value Added Service | Expansion and Draw as per needed Length and Size, , Polish (Comilimeterercial and Electro), Machining, Annealed & Pickled Bending Etc. |
| Pipe Schedule | STD, SCH120, SCH20, SCH10S, SCH30, SCH40, SCH140, SCH40S, SCH160, XS, SCH60, SCH5, SCH10, SCH80, XXS, SCH80 |
| Tubing wall thickness | 0.020" –0.220", (custom wall thicknesses available) |
| Finish | AP (Annealed & Pickled), BA (Bright & Annealed), NO.1, 2B, Polished, MF, HL, NO.4, Mirror finish, BA, 8K etc |
| End | Plain End, Beveled End, Treaded Pipe, Screwed ends |
| Length | Standard & Cut length , Single Random, Double Random Pip |
Equivalent material grade of Nickel Alloy 601 pipe
| Grade | Euronorm | Old British | GOST | UNS No | Japanese JIS | ||
| AFNOR | No | En | BS | ||||
| Inconel 601 | NC23FeA | 2.4851 | NiCr23Fe | NA 49 | XH60BT | N06601 | NCF 601 |
Minimum Yield Strength Chart of Inconel 601 Pipe and Tube
| Grade | Yield Strength 0.2% Proof (MPa) min | Tensile Strength (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Brinell (HB) max | Rockwell B (HR B) max | ||||
| 601 | MPa – 310, Psi – 45,000 | MPa -655, Psi – 95,000 | 40 | – | – |
Composition Standard of Astm B167 alloy 601 Pipe
| Grade | Mn | Ni | C | Cu | Si | S | Fe | Cr | |
| 601 | minimum | – | 58.0 | – | – | – | – | Bal | 21.00 |
| maximum | 1.0 | 63.0 | 0.010 | 1.00 | 0.05 | 0.0015 | Bal | 25.00 | |
Features of Inconel 601 Tubes
Inconel 601 seamless tubes offer excellent corrosion resistance, mechanical reliability, and long service life under harsh environmental conditions. These characteristics make them suitable for a wide range of industrial applications. The following is a brief overview of its key performance characteristics.
Excellent High-Temperature Strength: The tube maintains excellent mechanical properties above 1000°C, enabling reliable application in boilers, turbines, and furnace systems requiring sustained high-temperature environments without strength loss.
Excellent Oxidation Resistance (Approximately 1200°C): The tube surface remains stable under fuel combustion conditions. It resists oxidation and scaling at temperatures up to 1200°C. This allows for efficient system operation and extends service life. Carburization Resistance: Carburization resistance prevents carbon diffusion into the material, thus avoiding embrittlement. This protective property ensures a longer service life for furnaces and heat treatment equipment.
Good Thermal Shock Resistance: These pipes can withstand rapid temperature fluctuations without cracking or deformation. This helps in handling reheater systems and turbine exhaust systems with rapid temperature changes.
High Mechanical Strength and Durability: Due to its stability and resistance to stress corrosion cracking, this pipe can withstand high-pressure and corrosive environments. Even after prolonged stress, it maintains its structural integrity.
Easy to Form and Weld: Manufacturing methods such as bending, welding, and machining are simple and easy. This makes the installation of large piping systems and heat exchanger networks much easier.
ASTM B167 UNS N06600 Pipe Size Chart In Mm
| Pipe Outer Diameter MM |
Pipe Wall Thickness MM |
Inch | Schedule | Kg / M9 |
|---|---|---|---|---|
| 219.08 | 23.012) | 8 | 160 | 112.97 |
| 13.72 | 2.24 | 1/4 | 40S | 0.64 |
| 21.34 | 2.77 | 1/2 | 40S | 1.29 |
| 17.15 | 1.65 | 3/8 | 10S | 0.64 |
| 13.72 | 3.02 | 1/4 | 80S | 0.81 |
| 17.15 | 2.31 | 3/8 | 40S | 0.86 |
| 21.34 | 2.11 | 1/2 | 10S | 1.02 |
| 13.72 | 1.65 | 1/4 | 10S | 0.50 |
| 17.15 | 3.20 | 3/8 | 80S | 1.12 |
| 33.40 | 2.77 | 1 | 10S | 2.13 |
| 48.26 | 5.08 | 1½ | 80S | 5.49 |
| 21.34 | 3.73 | 1/2 | 80S | 1.65 |
| 26.67 | 2.11 | 3/4 | 10S | 1.30 |
| 60.33 | 2.77 | 2 | 10S | 3.99 |
| 26.67 | 2.87 | 3/4 | 40S | 1.71 |
| 88.90 | 7.62 | 3 | 80S | 15.51 |
| 26.67 | 3.91 | 3/4 | 80S | 2.23 |
| 33.40 | 3.38 | 1 | 40S | 2.54 |
| 42.16 | 4.85 | 1¼ | 80S | 4.53 |
| 48.26 | 3.68 | 1½ | 40S | 4.11 |
| 33.40 | 4.55 | 1 | 80S | 3.29 |
| 42.16 | 2.77 | 1¼ | 10S | 2.73 |
| 33.40 | 6.352) | 1 | 160 | 4.30 |
100% Certified Testing and Documentation
EN 10204 3.1 and EN 10204 3.2 Material Testing Certificates (MTC)
Raw Material Certificates
100% PMI (Positive Material Analysis)
Heat Treatment Charts
Third-Party Inspection Reports
Surface Roughness and Dimensional Measurements
Manufacturer Test Certificates (Impact Testing, Flattening Testing, Flaring Testing, Bending Testing, Hardness Testing, Intergranular Corrosion Testing, Pitting Testing, Grain Size Testing, Electrophoresis Testing, Ultrasonic Testing, Heat Treatment)
Laboratory Test Certificates issued by government-accredited laboratories
Astm B167 Inconel 601 Seamless Tube Applications
Radiant tubes
Steam superheater tube supports
Heat treatment industry
Power generation
Aerospace
Chemical processing
Catalyst grids in nitric acid production
Heat treatment furnaces and distillation kettles
Why Choose Gnee as Your Nickel-Based Alloy Supplier
✅ Over 18 years of export experience, products sold to more than 80 countries
✅ Certified by ISO, SGS, and BV
✅ Global inventory of Inconel, Hastelloy, Incoloy, and Monel alloy tubing, plates, and bars
✅ Custom processing services available – including cutting, polishing, CNC machining, and packaging
✅ Fast delivery within 7-15 days, supported by global logistics partners
📦 Packaging and Shipping
All stainless steel 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
About Gnee Steel
Gnee Steel is a professional manufacturer of nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy 800, Incoloy 800H/HT, Incoloy 825, Monel 400, Monel K500, and other high-temperature alloy materials. We specialize in the production and sales of alloy materials. Gnee Steel's products are widely used in aerospace, chemical, power generation, automotive, nuclear energy, and other fields, and we can provide customized alloy material solutions according to customer needs. For inquiries about alloy material prices or customized alloy material solutions, please feel free to contact us via email at ss@gneemetal.com for a quote.
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FAQ
Q: What are the specifications of Inconel 601?
A: Inconel 601 is a nickel-chromium alloy used in applications requiring corrosion resistance and heat protection. A key characteristic of Inconel 601 is its excellent resistance to high-temperature oxidation, maintaining extremely high oxidation resistance even at temperatures as high as 2200°F (1200°C).
Q: What are the mechanical properties of Inconel 601?
A: The most significant characteristic of Inconel 601 is its resistance to high-temperature oxidation. This alloy also exhibits good resistance to water corrosion, high mechanical strength, and is easy to form, process, and weld.
Q: What is the difference between Inconel 601 and 602?
A: Inconel 601 excels in oxidation resistance and tensile strength, making it suitable for high-temperature applications. In contrast, Inconel 602 offers superior creep resistance and sulfide resistance, making it ideal for reducing environments.
Q: What is the maximum operating temperature of Inconel 625?
A: Class 1 Inconel 625 has a rated continuous operating temperature up to 1100°F (593°C). Class 2 Inconel 625 has a rated operating temperature up to approximately 1800°F (982°C), where creep and oxidation resistance are primary considerations. Above 1200°F (649°C), the strength of Inconel 625 decreases, but its chromium oxide coating prevents oxidation. For load-bearing applications above 1500°F (815°C), ASTM B167 is recommended, as it offers superior cyclic oxidation resistance due to its aluminum content.
Q: What is the composition of Inconel 601?
A: Inconel 601 alloy is a nickel-based ferrochromium alloy suitable for general engineering applications, exhibiting excellent heat resistance and oxidation resistance. N06601 offers good water corrosion resistance, high mechanical strength, and ease of forming, machining, and welding.
Q: How machinable is Inconel 601?
A: A notable characteristic of Inconel 601 alloy is its resistance to high-temperature oxidation. This alloy also possesses good water corrosion resistance, high mechanical strength, and ease of forming, machining, and welding.
Q: What are the material specifications for Inconel 601?
A: Inconel 601 is a nickel-chromium alloy used in applications requiring corrosion protection and heat protection. Inconel 601 alloy stands out for its excellent resistance to high-temperature oxidation, maintaining extremely high oxidation resistance even at temperatures as high as 2200°F (1272°C).
