Hastelloy C276 Square Tubing
As a manufacturer with ten years of experience in stainless steel pipe import and export trade, we offer Hastelloy C276 square tubing.
Hastelloy C276 square tubing is a specific configuration (square) of a versatile nickel-chromium-molybdenum superalloy,renowned for its exceptional corrosion resistance in highly corrosive environments.This material is suitable for demanding industrial applications where standard stainless steels fall short.
Hastelloy C276 square tubing is primarily designed for structural applications due to its convenience and mechanical performance advantages,rather than for fluid conveyance.While round tubing is more effective at withstanding internal pressure and torsional stress,square tubing offers distinct advantages in building frameworks and support structures.
Specification of Hastelloy C276 Square Tubing
| Product | Hastelloy C276 Square Tubing |
| Working Temperature | Up to Approximately 1038°C (1900°F) |
| Dimension Range | Outside Diameter (OD): 6 – 200 mm Wall Thickness (THK): 0.35 – 6 mm Length (L): 0.5 – 12 m The size can be customized according to ASME B36.10 / ASME B36.19 |
| Schedules | SCH 5, 10, 40, 80, 160, XXS, XXH |
| Materials | Hastelloy C276 | UNS N10276 | W.Nr.2.4819 | DIN/EN 2.4606 |
| Standards | ASTM B622 / ASME SB 622 / ASTM B626 / ASME SB 626 |
| Surface Finish |
Hot Rolling Annealed and Pickled Cold Working / Cold Drawing Polished Bright Annealing |
| Corrosion Resistance Specifications |
Excellent Resistance To: Strongly Acidic Environment Chloride Environment Oxidizing And Reducing Media Other Harsh Environments |
| Applications | Chemical and Petrochemical Processing Industry Pollution Control Marine and Coastal Engineering Pharmaceutical and High-cleanliness Industries |
| Our Strength | Over 10 Years Experience Exporting Pipes & Tubings Stock Available In Common Sizes Customized Fabrication Available Package Supplying of Piping Materials Strict QC With PMI Testing For Every Batch Experience in Exporting to the US,Germany,UAE,etc. Third Party Inspection Available |
For more information on Hastelloy c276 tubings and other products, please contact us.
Hastelloy C276 Square Tubing Chemical Composition (%)
| Ni | Cr | Fe | Mo | W | Co |
| Balance | 14.5 – 16.5 | 4 – 7 | 15 – 17 | 3 – 4.5 | ≤ 2.5 |
| C | Mn | Si | S | P | V |
| ≤ 0.01 | ≤ 1 | ≤ 0.08 | ≤ 0.03 | ≤ 0.04 | ≤ 0.35 |
Hastelloy C276 Square Tubing Mechanical Properties(Typical value range)
| Tensile Strength | Yield strength | Elongation | Hardness |
| ~ 690 – 790 MPa | ~ 283 – 355 MPa | ≥ 40 % | ≤ 90 – 95 HRB |
Manufacturing Process for Hastelloy C276 Square Tubing
The manufacturing process for Hastelloy C276 square tubes draws upon standard circular tube production techniques (seamless or welded),followed by a forming stage to achieve the square shape,and concludes with the necessary solution annealing treatment.
Seamless Hastelloy C276 Square Tubing
High-purity raw materials (nickel,chromium,molybdenum,etc.) are melted in an electric arc furnace,followed by refining processes such as argon-oxygen decarburization (AOD) to achieve precise UNS N10276 composition.
Solid alloy billets are heated and pierced using a mandrel press or vertical hydraulic piercing machine to form hollow tube blanks.
Hollow blanks undergo further processing via hot extrusion,cold drawing,or cold rolling to achieve the required dimensions.
Round tubing is then passed through a series of forming dies or rollers to create the final square or rectangular profile.
The tubes are heated to high temperatures (approximately 2050°F or 1121°C) and rapidly quenched in water.This process restores the alloy’s optimal corrosion resistance and ductility after cold or hot working.
Finished square tubes undergo straightening,acid pickling (acid cleaning),and extensive non-destructive testing (such as ultrasonic or hydrostatic testing) to ensure quality and integrity.
Welding Hastelloy C276 Square Tubing
Unroll and flatten Hastelloy C276 plate or coil stock.
Progressively roll the flat strip into a circular tube shape,then perform longitudinal welding,typically using electric resistance welding (ERW) or other conventional welding methods suitable for nickel alloys.The low carbon content of Hastelloy C276 minimizes grain boundary precipitation during welding,allowing it to be used as-welded in many applications.
The welded circular tubes undergo dimensional adjustment and are processed through forming rolls to create a square cross-section.
Although the alloy’s low carbon content aids welding,post-forming annealing is recommended to ensure maximum corrosion resistance,particularly in severe environments.
Similar to the seamless process,the final product requires cleaning,straightening,and various tests to meet quality standards.
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