ASTM B622 Hastelloy C276 seamless tubing is a high-quality metal tubing that is used in various industrial applications. The term "seamless tubing" refers to the production process that creates a single piece of tubing without any welding or joining of two pieces of metal. This Hastelloy c276 Seamless Tubing offers greater resistance to corrosion, higher strength-to-weight ratios, and improved ability to withstand high temperatures and pressure levels.
ASTM B622 Standard:
ASTM B622 is a standard specification that defines the requirements for seamless nickel-chromium-molybdenum-columbium alloy (6Mo) and nickel-chromium-molybdenum-silicon (7Mo) tubing for general corrosive service. The ASME SB 622 standard covers various dimensions, chemical compositions, mechanical properties, heat treatment, testing, inspection, and packaging of the Hastelloy c 276 Tubing.
Hastelloy Alloy C276 Material:
Hastelloy alloy C276 is a corrosion-resistant nickel-molybdenum-chromium alloy that contains small amounts of tungsten and iron. DIN 2.4819 Hastelloy C276 has excellent resistance to a wide range of corrosive media, such as oxidizing and reducing acids, saltwater, chlorine, and other halides. The alloy C276 material has high strength, toughness, and ductility at ambient and elevated temperatures, making it suitable for various industrial and chemical processing applications.
Alloy C276 Seamless Tubes Physical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Density | 8.89 g/cm³ | 0.321 lb/in³ |
| Melting point | 1371°C | 2500°F |
Hastelloy C276 Seamless Tubes Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength (@thickness 4.80-25.4 mm, 538°C/@thickness 0.189-1.00 in, 1000°F) | 601.2 MPa | 87200 psi |
| Yield strength (0.2% offset, @thickness 2.40 mm, 427°C/@thickness 0.0945 in, 801°F) | 204.8 MPa | 29700 psi |
| Elastic modulus (RT) | 205 GPa | 29700 ksi |
| Elongation at break (in 50.8 mm, @thickness 1.60-4.70 mm, 204°C/@thickness 0.0630-0.185 in, 399°F) | 56% | 56% |
| Hardness, Rockwell B (plate) | 87 | 87 |
ASME SB622 Hastelloy C276 Seamless Tubes Thermal Properties
| Properties | Metric | Imperial |
|---|---|---|
| Thermal expansion co-efficient (@24-93°C/75.2-199°F) | 11.2 µm/m°C | 6.22 µin/in°F |
| Thermal conductivity (-168 °C) | 7.20 W/mK | 50.0 BTU in/hr.ft².°F |
Hastelloy Alloy C276 tube Dimension Stock List
| ALLOY C-276 (15Cr/16Mo/4W) | Dimension |
|---|---|
| Tube; bright annealed, welded | 13.72 x 2.24 mm (¼"nb sch40s) |
| Tube; annealed, welded | 17.15 x 1.65 mm (3/8"nb sch10s) |
| Tube; bright annealed, welded | 17.15 x 2.31 mm (3/8"nb sch40s) |
| Tube; annealed, welded | 21.34 x 2.11 mm (½"nb sch10s) |
| Tube; bright solution annealed, welded | 21.34 x 2.77 mm (½"nb sch40s) |
| Tube; solution annealed, welded | 26.67 x 2.11 mm (¾"nb SCH 10s) |
| Tube; bright solution annealed, welded | 26.67 x 2.87 mm (¾"nb sch40s) |
| Tube; pickled, welded | 33.40 x 2.77 mm (1"nb sch10s) |
| Tube; annealed, welded | 33.40 x 3.38 mm, (1"nb sch40s) |
| Tube; welded, annealed | 42.16 x 3.56 mm (1¼"nb sch40s) |
| Tube; solution annealed, welded | 48.26 x 2.77 mm (1½" sch10s) |
| Tube; bright solution annealed, welded | 48.26 x 3.68 mm, (1½" sch40s) |
| Tube; pickled, welded | 60.33 x 2.77 mm, (2"nb sch10s) |
| Tube; pickled, welded | 60.33 x 2.77 mm, (2"nb sch10s) |
| Tube; seamless, cold drawn, pickled, solution annealed | 60.33 x 5.54 mm (2"nb sch80s) |
| Tube; welded, annealed, pickled | 73.02 x 3.05 mm (2½"nb sch10s) |
| Tube; bright solution annealed, welded | 88.9 x 3.05 mm, (3"nb sch10s) |
| Tube; bright solution annealed, welded | 88.9 x 5.49 mm (3"nb sch40s) |
| Tube; cold worked, solution annealed, welded | 114.3 x 3.05 mm (4"nb sch10s) |
| Tube; cold drawn, annealed, welded | 3.17 x 0.51 mm (0.125" x 0.02") |
| Tube; welded, bright annealed | 3.17 x 0.89 mm (0.125" x 0.035") |
Production of Hastelloy c276 Seamless Tubing:
The production process of alloy c276 seamless tubing involves heating a hollow billet of metal to create a hot cylindrical rod. This rod is then pierced through the center by a mandrel to create a seamless tube. Then, the Hastelloy c276 Tubing is stretched and rolled over a mandrel to achieve the desired diameter, wall thickness, and surface finish. The final Alloy c276 Tubing product undergoes various testing and inspection processes to ensure quality and compliance with the astm b622 standard.
Comparison with ASTM B619 Hastelloy c276 Welded Tubing:
Compared to welded tubing, ASTM B622 Hastelloy c276 seamless tubing offers better structural integrity, smoother inner surface, and higher resistance to fatigue and stress corrosion cracking. ASTM B619 UNS N10276 Welded tubing, on the other hand, is cheaper to produce but often contains weld defects, such as porosity, cracking, and corrosion. In applications where reliability, safety, and performance are crucial, seamless tubing is the preferred choice.
Applications of ASME SB 622 Alloy C276 Seamless Tubing:
- Chlorination systems
- Flue gas scrubbers
- Outlet ducting and stack liners for power plants, pulp and paper bleach plants, sulfur dioxide scrubbers, and weld overlay of less corrosion resistant metals
- Acid production and pickling systems
- Pharmaceutical industries use alloy C-22 fittings and tubing to avoid contamination caused by corrosion related failures
- Cellophane manufacturing
- Chlorination systems
- Pesticide production
- Incineration scrubber systems
- Chemical process industry in equipment like flue gas scrubbers, chlorination systems, sulfur dioxide scrubbers, pulp and paper bleach plants, pickling systems, and nuclear fuel reprocessing
- Waste water processing
- Pollution control stack liners, ducts, dampers, scrubbers, stack-gas reheaters, fans and fan housings
- Flue gas desulfurization systems
- Chemical processing components like heat exchangers, reaction vessels, evaporators, and transfer piping
- Sour gas wells
- Pulp and paper production
- Waste treatment
- Pharmaceutical and food processing equipment
Who Makes Hastelloy C276 Seamless Pipe?
Our company is a professional and reliable one-stop service manufacturer suppliers exports. We not only provide Hastelloy c276 Tubing, round bar, pipes, plates, sheets raw materials, but also provide UNS N10276 pipe fittings, flanges, fasteners, and fabricated pipe spools service. Free samples can be provided. Contact us for a free quote.
