ASTM B163 Inconel 601 nickel alloy pickled annealed tubing is a high-performance tubing made from a nickel-chromium-iron alloy and aluminum, designed for high-temperature, corrosive environments. Key properties include excellent high-temperature oxidation resistance (up to 1200°C) due to a protective oxide scale, good high-temperature strength, and resistance to thermal cycling (no spalling). The "pickled annealed" condition indicates that it has been treated with acid to remove surface oxides (pickling), followed by heat treatment to relieve internal stresses and improve ductility.

How machinable is Inconel alloy 601?

A key feature of INCONEL alloy 601 is its resistance to high-temperature oxidation. The alloy also offers good resistance to aqueous corrosion, high mechanical strength, and ease of forming, machining, and welding.
Specification List of Inconel 601 seamless tube
| Inconel alloy 601 Tubing Standards | ASTM B163 / ASME SB163 |
|---|---|
| Inconel alloy 601 Seamless Tube Size | 3.35 mm OD To 101.6 mm OD |
| Marking | All Alloy 601 Tubing are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer's request.) |
| Inconel 601 Tubing Length | Single Random, Double Random, Standard & Cut length Tube |
| Inconel 601 din 2.4851 Tubing Finish | Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF |
| Value Added Service | Draw & Expansion as per required Size & Length, Polish (Electro & Commercial) Annealed & Pickled Bending, Machining Etc. |
| Specialize in | Alloy 601 Capillary Tube & Other Odd Size ASTM B163 UNS N06601 Heat Exchanger & Condenser Tube |
| Form | 'U' bent, Hollow, Hydraulic, LSAW, Boiler, Straight Tube, Tube Coil, Round, Rectangular, Square Etc |
| Types of Nickel Alloy 601 Tubing | Seamless, ERW, EFW, Welded, Fabricated Tube / Tubing |
| Inconel 601 din 2.4851 Tube wall thickness | 0.020" –0.220", (special wall thicknesses available) |
| Nickel Alloy 601 Tube End | Plain End, Beveled End, Treaded Tube |
| Inconel alloy 601 Welded Tube Size | 6.35 mm OD To 152 mm OD |
| Inconel 601 ASTM B163 Tubing Swg & Bwg | 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg. |
| Application & uses of Inconel 601 seamless tube | Oil Tube, Gas Tube, Fluid Tube, Boiler Tube, Heat exchanger Tube, |
Chemical Properties of Inconel 601 seamless tube
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Inconel 601 | 8.1 g/cm3 | 1411 °C (2571 °F) | Psi – 80,000 , MPa – 550 | Psi – 30,000 , MPa – 205 | 30 % |
Mechanical Characteristics of Alloy 601 Tube
| Grade | C | Mn | Si | S | Cu | Fe | Ni | Cr |
| Inconel 601 | 0.10 max | 1.00 max | 0.50 max | 0.015max | 1.00 max | Balance | 58.0 – 63.0 | 21.0 – 25.0 |
Common Applications
Chemical and petrochemical processing
Power generation
Aerospace and defense
Furnaces and heat treatment equipment
Heat exchangers and radiant tubes
Nuclear reactors
Pollution control equipment
Alloy 601 Tubing Pressure Rating
| Tube O.D. (in.) |
Wall Thickness of Tube (inches) | |||||||
|---|---|---|---|---|---|---|---|---|
| .028 | .035 | .049 | .065 | .083 | .095 | .109 | .120 | |
| Working Pressure (psig) | ||||||||
| 1/8 | 7900 | 10100 | ||||||
| 1/4 | 3700 | 4800 | 7000 | 9500 | ||||
| 5/16 | 3700 | 5400 | 7300 | |||||
| 3/8 | 3100 | 4400 | 6100 | |||||
| 1/2 | 2300 | 3200 | 4400 | |||||
| 3/4 | 2200 | 3000 | 4000 | 4600 | ||||
| 1 | 2200 | 2900 | 3400 | 3900 | 4300 | |||

Gnee Steel specializes in the production of various nickel-based alloys. Gnee Steel's product packaging includes steel strapping: Pipes with an outer diameter of 3 inches or less are typically strapped together with polypropylene film to prevent rust during sea transportation, and then secured with steel strapping. Wooden boxes/crates: Pipes are typically packaged in wooden boxes or crates to protect them during transportation, especially those that are longer or have larger diameters. Seaworthy export packaging: Suppliers typically use standard seaworthy export packaging methods, which may include a variety of materials and techniques to protect the pipes during transportation. Tarpaulin packaging: This prevents rainwater, seawater, and other external factors from penetrating the export wooden crates during transportation. Gnee Steel specializes in the production and sale of alloy materials. Gnee Steel's products are widely used in aerospace, chemical, power, automotive, nuclear, and other industries, and we can provide customized alloy material solutions based on customer needs. For alloy material pricing inquiries or customized alloy material solutions, please feel free to contact us for a quote at ss@gneemetal.com





