ASTM B167, ASME SB167 Inconel 601 UNS N06601 Nickel Alloy Steel Seamless Pipe

ASTM B167 / ASME SB167 Inconel 601 UNS N06601 Nickel Alloy Pipe

INCONEL nickel-chromium-iron alloy 601 (UNS N06601/W.Nr. 2.4851) is a general-purpose engineering material for applications that require resistance to heat and corrosion. An outstanding characteristic of INCONEL alloy 601 is its resistance to hightemperature oxidation. The alloy also has good resistance to aqueous corrosion, has high mechanical strength, and is readily formed, machined and welded.

The most important property of Inconel 601 is resistance to oxidation at very high temperatures up to 1250C. Even under severe conditions such as, cyclical heating and cooling. This is possible due to Inconel 601 having a tightly adherent oxide layer which is resistant against spalling. Resistance to carburization is good, also resistant to carbon nitriding conditions. Due to high chromium and some aluminum content, good resistance in oxidizing sulfur bearing atmospheres at elevated temperatures is demonstrated.

Physical Properties

Chemical Composition

Mechanical Properties

ASTM B167 Inconel 601 Seamless Pipes range

Heat Treatment

Inconel 601 is solution annealed at 1100 – 1180°C, and cooled quickly so as to avoid sensitisation to intergranular corrosion. Annealing time should be short to avoid excessive grain growth.

Advantages:

1. Corrosion Resistance:

Nickel alloy steel seamless pipe exhibits superior resistance to corrosion, especially in acidic, alkaline, or high-temperature environments. This makes it ideal for applications in chemical processing, power generation, and oil and gas pipelines.

2. High Strength: Nickel alloy steel has high tensile strength, which makes it suitable for applications that require high strength and durability. This ensures that the pipes can withstand high-pressure conditions without any damage.

3. Heat Resistance: Nickel alloy steel seamless pipes have excellent heat resistance properties, which makes them ideal for use in high-temperature applications such as boilers, furnaces, and heat exchangers.

4. Weldability: Nickel alloy steel seamless pipes have good weldability, which means they can be easily welded without any loss of mechanical properties. This makes it easy to fabricate and install the pipes in various applications.

5. Low Maintenance: Nickel alloy steel seamless pipes require low maintenance as they are resistant to corrosion, wear, and tear. This reduces the cost of maintenance and ensures that the pipes have a longer service life.

6. Versatility: Nickel alloy steel seamless pipe is versatile and can be used in a wide range of applications, including chemical processing, power generation, oil and gas pipelines, and aerospace industries, among others.

7. Resistance to Erosion: Some nickel alloy steel grades, such as Hastelloy C276, exhibit superior resistance to erosion, which makes it suitable for use in abrasive environments such as chemical scrubbers, flue gas desulfurization systems, and oil and gas pipelines.

Application

• Trays, baskets and fixtures used in various heat treatments such as carburizing and carbon nitriding.
• Refractory anchors, strand annealing and radiant tubes, high velocity gas burners, wire mesh belts etc.
• Insulating cans in ammonia reformers and catalyst support grids used in nitric acid production.
• Thermal reactors in exhaust system of petrol engines.
• Fabricated combustion chambers.
• Tube supports and ash trays in the power generation industry.
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