ASTM B564 UNS N10276 C276 Slip On RF Flange For Hazardous Industrial Waste
Slip-on flanges feature a low hub and a bore slightly larger than the outside diameter of the mating pipe. The pipe is "slipped" into the flange, and then fillet welded to the outside and inside of the pipe to create a secure connection.
They are easier to align than butt-weld flanges. They are also less expensive and require less accurate pipe length measurements.
C276, commonly known as Hastelloy C-276, is one of the most widely used nickel-based "high-temperature alloys."
This material offers excellent corrosion resistance and is widely used in the most corrosive environments, such as in the chemical industry where it is exposed to HCl, Cl₂, acetic acid, wet chlorine gas, pollution control, and the pulp and paper industry.
ASTM B564 Hastelloy C-276 Specifications
Chemical composition
| Grade | % | Ni | Cr | Mo | Fe | W | Co | C | Mn | Si | V | P | S |
| C-276 | Min | Bal. | 14.5 | 15 | 4 | 3 | | | | | | | |
| Max | 16.5 | 17 | 7 | 4.5 | 2.5 | 0.01 | 1 | 0.08 | 0.35 | 0.04 | 0.03 |
Hastelloy C276 Mechanical properties(Minimum value at 20℃)
| Tensile Strengthσb/MPa | Yield Strengthσp0.2/MPa | Elongationσ5 /% |
| 690 | 283 | 40 |
| Form | ASTM | ASME | VdTÜV |
| Bar | B574, B5641 | SB574, SB5641 | 400 |
| Plate & Sheet | B575 | SB575 | 400 |
| Welded Pipe | B619 | SB619 | – |
| Welded Tube | B626 | SB626 | – |
| Seamless Pipe & Tube | B622 | SB622 | – |
Application
Chemical processing industry: Connections for reactors, towers, heat exchangers, and pipelines.
Flue gas desulfurization systems: Exhaust gas treatment systems for coal-fired power plants and waste incineration plants.
Petrochemical and natural gas processing: Process piping for catalytic cracking, hydrotreating, and other equipment.
Reactors, distillation towers, and material transport piping systems requiring extremely high cleanliness and purity.
Critical pipelines, seawater cooling systems, and desalination plants on offshore platforms.
Hazardous industrial waste and waste acid treatment plants, as well as nuclear fuel reprocessing facilities.
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