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

Threaded flange is a non-welded flange that uses threads to connect to pipes. The inner hole of the flange is processed into pipe threads and matched with threaded pipes to achieve connection. Its design principle can be handled as a loose flange. The advantage is that it does not require welding, and the additional torque generated on the cylinder or pipe when the flange is deformed is very small. However, the disadvantage of threaded flanges is that the flange thickness is large and the cost is high. Threaded flanges are widely used in pipeline systems that require high-pressure connections, especially in places where welding is not allowed. Due to its convenience in installation and maintenance, threaded flanges have important applications in the industrial field.

316H Threaded Flange Drawing