UNS N06600 or Alloy 600 is a popular material for the manufacturing of heat exchanger and condenser tubes. This alloy belongs to the category of nickel-chromium-iron alloys with excellent high-temperature strength and resistance to corrosion and oxidation. Alloy 600 seamless Tube is manufactured duing to ASTM B163. ASTM B163 is a standard specification for seamless nickel and nickel alloy condenser and heat exchanger tubes. It covers tubes made of UNS N04400, UNS N06600, UNS N06601, UNS N06603, UNS N06690, UNS N06693, UNS N08800, UNS N08810, UNS N08811, and UNS N08825.

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The chemical composition of ASTM B163 Alloy 600 Tube

• Nickel (Ni): 72.0% min

• Chromium (Cr): 14.0-17.0%

• Iron (Fe): 6.0-10.0%

• Carbon (C): 0.15% max

• Manganese (Mn): 1.0% max

• Sulfur (S): 0.015% max
    

ASTM B163 Alloy 600 seamlessTube exhibits exceptional properties, making it suitable for a wide range of applications. The key properties of Alloy 600 tubes are:

- High thermal conductivity

- Excellent resistance to high-temperature oxidation and corrosion

- Good strength and toughness at elevated temperatures

- Resistance to stress-corrosion cracking (SCC) and pitting

- Low coefficient of expansion

- Good workability and weldability

ASTM B163 specifies the requirements for seamless nickel and nickel alloy tubes for condensers and heat exchangers. The tubes are manufactured by hot or cold rolling and then cold-drawn to the final dimensions. The tubes are then annealed in a reducing atmosphere to enhance their ductility and remove any residual stresses.

In addition to ASTM B163, Alloy 600 tubes comply with several other standards like ASME SB-163, ASME SB-516, ASME SB-751, and DIN 17751. These standards ensure that the material meets the required specifications and performs efficiently under demanding conditions.

ASTM B163 Alloy 600  seamlessTubes are widely used in various industries, including power generation, chemical processing, and petroleum refining:

- Heat exchangers and condensers in power plants

- Piping systems for handling corrosive fluids in chemical and petrochemical plants

- Furnace components and retorts for heat treatment applications

- Cryogenic equipment for liquid nitrogen and oxygen storage

- Aerospace components like jet engine exhaust systems, turbine blades, and rocket motors

- Pollution control equipment like flue gas desulfurization systems