NXF ASTM A240 316H/1Cr17Ni12Mo2/31609 DN15-1200 Class150-1500 Stainless Steel 316H Forging ANSI B16.5 Socket Welding Flange

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.

The socket welding flange forms a connection by inserting the pipe end into the flange ring step and welding the pipe end and outside. There are two main types of this kind of flange: with neck and without neck. Among them, the flange with neck has better rigidity and sealing performance, and is suitable for occasions where the pressure is 1.0~10.0MPa‌. Socket flanges are particularly suitable for small diameter pipes, especially pipes with a diameter less than or equal to DN40. Its unique socket welding method makes the installation process easier and more efficient, and is especially suitable for low and medium pressure piping systems, such as boiler and pressure vessels, petrochemical, shipbuilding, pharmaceutical, metallurgy, machinery manufacturing and food processing industries.

316H Socket Welding Flange Drawing