Two specifications apply to Hastelloy C276 Pipe: ASTM B622 and ASTM B619. The ASTM B622 Pipe is typically constructed in a seamless manner, whereas the ASTM B619 Pipe is welded. The C276 Hastelloy Pipe is the most popular of all Hastelloy variations.
The low carbon content of the 2.4819 Alloy C276 Pipe is what prevents carbide precipitation. Carbide precipitation occurs during the welding of various alloy grades. A lower carbon-based alloy, such as ASTM B619 UNS N10276 2.4819 Pipe, is used in a variety of applications that require corrosion resistance in as-welded structures.
This nickel Hastelloy C276 Seamless Pipe is also resistant to the formation of grain boundary precipitates, particularly in the heat-affected zone of the weld. As a result, Hastelloy C276 Welded Pipe is well suited for use in chemical process applications in as-welded form. The corrosion resistance properties of ASTM B622 UNS N10276 Alloy C276 Pipe are improved by the addition of tungsten. ASTM B622 UNS N10276 Pipe, for example, has excellent resistance to pitting and crevice corrosion in both reducing and oxidising environments. Alloy C276 Seamless and Welded Pipes come in a variety of shapes, including square, round, and rectangular.
Heat Treatment and Fabrication
Because of the hastelloy C276 pipe specification, it hardens faster than most austenitic stainless steels and may necessitate several stages of cold work with intermediate anneals. C-276 INCONEL alloy is typically annealed at 2100-2150°F (1150-1175°C) and rapidly cooled, such as by water quenching. This process is used by several hastelloy C276 pipe and hastelloy C276 tube suppliers. The alloy Hastelloy C-276 can be forged, hot-upset, and impact extruded. All common welding methods are acceptable, though the oxyacetylene and submerged arc processes are not recommended when the fabricated item is to be used in corrosion service.
Properties
Hastelloy C276 pipe high temperature mechanical properties include good creep and oxidation resistance. Hastelloy C 276 Tubes are also known as high performance alloys that can be formed in a variety of shapes.