ASME SB 622 UNS N10276 Hastelloy C276 Tubing Manufacturer & Supplier in USA
Hastelloy C276 is a high-performance nickel chrome molybdenum alloy tubing that has a very harsh environment in corrosive as well as high-temperature settings. UNS N10276 Hastelloy C276 tubes are manufactured to standards of ASTM B622 and ASTM B619 and they provide unique resistance to pitting, crevice, stress corrosion cracking, oxidizing, and reducing media. The mentioned properties make Hastelloy C276 tubing one of the materials of choice in the chemical processing, pollution control, oil and gas, and power generation industries.
USA Piping Solution offers Hastelloy C276 tubing in seamless and welded forms with tight dimensional tolerances, uniform wall thickness, and high-quality surface finish, fit to be used in high-stakes industrial practices.
What is Hastelloy C276 Tube?
Hastelloy C276 is a solid solution strengthened nickel-based alloy, which includes large proportions of chromium, molybdenum, as well as tungsten. Hastelloy C276 tubing is optimally designed to work well in conditions that have high acids, chlorides, wet chlorine gas and combine with corrosive chemicals. C276 tubing, in contrast to other conventional stainless steels, is able to be difficult to corrode, as well as to remain stable mechanically, even at higher temperatures and pressures.
The alloy finds extensive application where a faulty piece of equipment caused by corrosion may cost the company dearly through loss of time or jeopardize safety.
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Hastelloy C276 Tube Specifications
The technical specifications of Hastelloy C276 tubes are defined to meet demanding industrial and corrosion-critical service conditions. All material supplied conforms strictly to international standards and quality requirements.
| Specification Parameter | Details |
|---|---|
| Material Grade | Hastelloy C276 |
| UNS Number | N10276 |
| Applicable Standards |
ASTM B622 / ASME SB622 (Seamless Tubes) ASTM B619 (Welded Tubes) |
| Manufacturing Types | Seamless, ERW, Welded, Fabricated |
| Outer Diameter (OD) | 4.00 mm to 22.00 mm |
| Wall Thickness | 0.15 mm to 1.50 mm |
| Nominal Bore (NB) | 1/2" to 6" |
| Schedules | As per standard SCH and SWG ranges |
| Tube Forms | Round, Square, Rectangular, Hydraulic |
| Tube Lengths | Single Random, Double Random, Cut Lengths |
| Tube Ends | Plain End (PE), Beveled End (BE), Threaded End (TE) |
All Hastelloy C276 tubes are supplied with appropriate heat treatment, dimensional inspection, and full material traceability to ensure compliance with ASTM and ASME specifications.
Chemical Composition of Hastelloy C276 Tubes
Hastelloy C276 tubing derives its corrosion resistance from a carefully balanced chemical composition:
| Element | Composition (%) |
|---|---|
| Nickel (Ni) | Balance |
| Chromium (Cr) | 14.5 – 16.5 |
| Molybdenum (Mo) | 15.0 – 17.0 |
| Iron (Fe) | 4.0 – 7.0 |
| Tungsten (W) | 3.0 – 4.5 |
| Carbon (C) | Max 0.01 |
The high molybdenum and chromium content provides superior resistance to localized corrosion and aggressive chemical environments.
Mechanical Properties of Hastelloy C276 Tubing
Hastelloy C276 tubes exhibit excellent mechanical strength combined with good ductility, making them suitable for fabrication and high-pressure service:
| Property | Value |
|---|---|
| Tensile Strength | Approx. 690 MPa |
| Yield Strength (0.2% Offset) | Approx. 283 MPa |
| Elongation | 40% minimum |
| Hardness | Typically below 100 HRB |
These properties remain stable over a wide temperature range, including cryogenic and elevated temperature conditions.
Why Hastelloy C276 Tubing is Used in Corrosive Services
Hastelloy C276 tubing is widely selected for applications where conventional alloys fail due to corrosion or chemical attack. Key performance advantages include:
- Outstanding resistance to pitting and crevice corrosion
- Excellent performance in chloride-rich environments
- Resistance to sulfuric, hydrochloric, and phosphoric acids
- Superior stability in oxidizing and reducing conditions
- High resistance to stress corrosion cracking
These characteristics make ASTM B622 Hastelloy C276 tubing ideal for continuous service in harsh chemical and thermal environments.
Types of Hastelloy C276 Tube
Hastelloy C276 Tubing Applications
Due to its exceptional corrosion resistance and mechanical reliability, Hastelloy C276 tubing is commonly used in:
- Chemical processing heat exchangers
- Acid handling and transfer systems
- Oil & gas production and refining equipment
- Pollution control and flue gas desulfurization units
- Pharmaceutical and specialty chemical plants
- Power generation and nuclear facilities
Hastelloy C276 Tubing vs Other Nickel Alloys
Compared to other nickel alloys, Hastelloy C276 tubing offers a balanced combination of corrosion resistance and fabrication ease:
- Hastelloy C276 vs Inconel 625: C276 provides better resistance to reducing acids, while Inconel 625 excels in high-temperature strength.
- Hastelloy C276 vs Monel 400: C276 outperforms Monel 400 in chloride and mixed acid environments.
- Hastelloy C276 vs Hastelloy C22: C22 offers slightly better resistance to oxidizing media, while C276 is more versatile across mixed corrosive conditions.
Why Choose USA Piping Solution for Hastelloy C276 Tubing?
USA Piping Solution is a trusted supplier of Hastelloy C276 tubing, offering:
- Certified material with full test documentation
- Strict quality control and dimensional accuracy
- Competitive pricing for project and bulk orders
- Global export packaging and timely delivery
Our Hastelloy C276 tubes are engineered to meet the demanding requirements of critical industrial applications worldwide.
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