Alloy 316H (UNS S31609) is a high carbon modification of Alloy 316 developed for use in elevated temperature service. The alloyhas higher strength at elevated temperatures and is used for structural and pressure vessel applications at temperatures above932°F (500°C). The higher carbon content of 316H also delivers higher tensile and yield strength than 316/316L and its austeniticstructure provides excellent toughness down to cryogenic temperatures.The corrosion resistance of Alloy 316H is comparable to Alloy 316/316L and is superior to Alloy 304/304L in moderately corrosiveenvironments. It is often used in process streams containing chlorides or halides. The alloy resists atmospheric corrosion, aswell as, moderately oxidizing and reducing environments. It also resists corrosion in polluted marine conditions.Alloy 316H is non-magnetic in the annealed condition. It cannot be hardened by heat treatment, however the material will hardendue to cold working. It can be easily welded and processed by standard shop fabrication practices.

Threaded nipples are commonly used fittings in industrial pipe connections, mainly divided into single-ended threaded nipples and double-ended threaded nipples. A single-ended threaded nipple has an external thread on one end and a flat or beveled end on the other; while a double-ended threaded nipple has external threads on both ends. Threaded nipples are usually connected to pipes by welding or threading, featuring a simple structure, small size, and easy installation. They also have good sealing performance, effectively preventing fluid leakage. Threaded nipples are widely used in various high-pressure fluid pipelines and equipment, suitable for applications that require high pressure resistance. Due to their convenient installation and disassembly, as well as their ability to meet the needs of different pipes and equipment, they offer high cost-effectiveness in the industrial field. Additionally, the surface of threaded nipples is smooth, free of cracks, and has no obvious pores or inclusions, ensuring their durability.

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