Materials of WN Flanges
The Welding neck flanges are available across various materials. These materials will have to be as per the Standards set. The materials also should be as per the quality specified by the ASTM or ASME standards.
However, the thickness and the inner diameter of the flange will be as per the size of the pipe for which this welding neck flange is being made.
Talking of the materials, Carbon alloy is a popular choice of material used to make these flanges since they are also resistant to extreme temperature. It is available in materials of ASTM A 181, and ASTM A 105. The flanges are available in various grades like ASME B16 47 ‘A’ Series, and ‘B’ Series to suit the needs of the clients and the industry.
Other than this material, Welding neck flanges are also in Stainless steel. The flange is made of ASTM A182, F304, 316L, 347H, 310S, ASME B16 5, and comes in a duplex steel finish.
The duplex steel material of UNS S31803 is also in use. Besides stainless steel, the welding neck flange is available in various other materials like Carbon alloy and nickel among others.
The Nickel alloy welding neck flange is available in the Inconel 600 and 625, Hastelloy C22, C276 and other such materials.