ASTM B366 WPNC Elbow UNS N04400 / Monel 400 Buttweld Pipe Fittings 90 Degree LR Elbow

Monel 400 Pipe Fittings , ASTM B366 uns n04400 / WPNC-WX Nickel Alloy 90 Degree LR Elbow
 
 
An ASTM B366 WPNC Elbow is a factory-made, wrought pipe fitting used to permanently change the direction of fluid flow in a piping system by 90 degrees. It is manufactured from Monel 400 (UNS N04400) nickel-copper alloy, adheres to the stringent material and testing requirements of the ASTM B366 standard, and features a Long Radius (LR) design (center-to-end dimension equal to 1.5 times the Nominal Pipe Size, or NPS). The ends are beveled for butt-welding directly to matching pipes. These elbows are typically manufactured via hot-forming (induction bending or pressing of seamless/welded pipe) followed by annealing and pickling to restore the optimal corrosion-resistant microstructure.
 
 
Equivalent Grades of ASTM B366 WPNC Elbow Monel 400 Buttweld Fittings

 
Chemical Composition % of ASTM B366 WPNC Elbow Monel 400 Buttweld Fittings

 
Physical Properties and Mechanical Properties of ASTM B366 WPNC Elbow Monel 400 Buttweld Fittings

 
 
Applications
Because Monel 400 resists stress-corrosion cracking and is highly resistant to reducing acids, this specific elbow is used in critical, harsh environments, including:

• Marine Engineering: Shipbuilding and seawater cooling lines (resists biofouling and chloride pitting).

• Chemical Processing: Hydrofluoric acid (HF) alkylation units, chlorinated solvents, and sulfuric acid vessels.

• Oil & Gas: Sour gas service (resists sulfide stress cracking) and offshore platforms.

• Aerospace & Heat Exchangers: Fuel tanks and high-temp transfer lines.