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What is ASTM B622?

ASTM B622 is a standard specification that covers seamless nickel and nickel-cobalt alloy pipe and tube. The alloys covered by this specification include UNS N10001, UNS N10276, UNS N10665, UNS N10675, UNS N10629, UNS N08031, UNS N08034, UNS N08036, UNS N08932, UNS N08926, UNS N08354, UNS N08800, UNS N08810, UNS N08811, UNS N08825, UNS N08120, UNS N08904, and UNS N08925.

The ASTM B622 specification defines the requirements for the chemical composition, dimensions, mechanical properties, and other characteristics of seamless nickel and nickel-cobalt alloy pipe and tube. The standard covers both seamless and welded pipes and tubes, with a range of sizes and thicknesses available.

This specification is important for the oil and gas, chemical processing, and petrochemical industries, as well as for other applications that require high-temperature resistance, corrosion resistance, and high-strength materials. The ASTM B622 specification ensures that the pipes and tubes produced from these alloys meet specific requirements and standards for use in these critical applications.