ASTM A182 F316 Flange WN SO SW BL

316/1.4401/UNS S31600

316L/1.4404/UNS S31603

ASTM A182 F316 is a standard specification for forged or rolled alloy-steel pipe flange, forged fittings, and valves and parts for high-temperature service.
The ASTM A182 316 WN, SO, SW flange is made from a high-grade material known as ASTM A182 316. This material is a high-temperature, corrosion-resistant alloy that contains higher nickel and molybdenum content than the standard 304 grade stainless steel. This increases the material's resistance to corrosion and pitting in harsh environments where chemicals and high temperatures are present.

Chemical Composition

Physical Properties

Density: 0.285 lb/inch3 
Poisson's Ratio: 0.3

Electrical Resistivity: 445 Ohm-circ mil/ft

Mechanical Properties

Representative Tensile Properties

Typical Tensile and Impact Properties

ASTM A182 F316 flange is available in a wide range of sizes and dimensions, making it adaptable to various applications. The welding neck (WN) flange provides a reliable connection that is easily installed and can be used in high-pressure and high-temperature environments. The slip-on (SO) flange is a commonly used flange that fits over the pipe and is secured with two fillet welds. The blind (BL) flange is used when the piping system needs a blank plate to close off a connection point or inspection point. The socket weld (SW) flange has a socket for fitting with the pipe and is an ideal choice for small diameter and high-pressure applications.

In summary, the ASTM A182 F316 flange WN SO SW BL is an essential component for high-temperature and high-pressure piping applications. The use of ASTM A182 316 ensures long-lasting durability and resistance to corrosion. The availability of various sizes and dimensions makes it versatile for a range of applications. These flanges are an ideal choice for petrochemical plants, oil refineries, and chemical industries where high-pressure and high-temperature operations are common.