Hastelloy C276 tubes are nickel-chromium-molybdenum-cobalt alloy tubes designed for highly corrosive industrial environments. They are widely used in chemical processing, heat exchangers, reactors, acid handling systems, and wastewater treatment because of their superior resistance to oxidizing and reducing acids, chlorides, and mixed chemical media.
Introduction
Hastelloy C276 (UNS N10276) is a premium nickel alloy known for outstanding corrosion resistance and mechanical strength. Industries that require reliable performance under harsh chemical conditions often use C276 tubes, especially when stainless steel or other nickel alloys are insufficient. Applications range from high-temperature heat exchangers to process piping in aggressive acid environments. TSM Technology provides ASTM B622 compliant C276 seamless tubes with full traceability, MTC certification, and custom sizes for various industrial needs.
Chemical Processing Applications
Acid Handling Systems
C276 tubes resist:
Sulfuric acid
Hydrochloric acid
Nitric acid
Phosphoric acid
Common uses:
Acid transfer lines
Reactor feed tubing
Storage tanks
Process distribution piping
Industrial Reactors
Used for:
Chemical reaction vessels
Evaporator coils
Condensers
Cooling jackets
The alloy maintains integrity under high pressure and temperature, ensuring safe and reliable operation.
Heat Exchanger Applications
Hastelloy C276 tubes are ideal for:
Shell-and-tube heat exchangers
Condensers
Evaporators
Cooling coils
Advantages:
Excellent corrosion resistance
Maintains mechanical strength at elevated temperatures
Reduces downtime and maintenance costs
Wastewater and Environmental Applications
C276 tubing is also used in:
Scrubbers for flue gas desulfurization
Wastewater treatment systems
Acid recovery systems
The tubes withstand chloride-containing streams, oxidizing agents, and variable pH conditions, extending service life in environmental applications.
Mechanical and Corrosion Performance
|
Property |
C276 Tube |
Notes |
|
Tensile Strength |
≥485 MPa |
Handles pressure in piping and reactors |
|
Yield Strength |
≥205 MPa |
Maintains structural integrity |
|
Elongation |
≥30% |
Good ductility for fabrication |
|
Hardness |
≤95 HRB |
Suitable for high-stress conditions |
|
Corrosion Resistance |
Excellent |
Oxidizing and reducing acids |
Tube Sizes and Specifications
|
Parameter |
Range |
|
Outside Diameter |
6 mm – 114.3 mm |
|
Wall Thickness |
0.5 mm – 10 mm |
|
Length |
Up to 12 meters |
|
Tube Type |
Seamless |
|
Surface Finish |
Pickled, Bright Annealed, Polished |
Custom sizes are available for process-specific applications.
Quality Assurance
C276 tubes undergo rigorous testing:
PMI verification of chemical composition
Hydrostatic testing for pressure integrity
Eddy current and ultrasonic testing for defects
Mechanical tests: tensile, flattening, hardness
Dimensional inspection
Compliant with ASTM B622 and EN 10204 3.1 standards.
FAQ
Q1: What industries use Hastelloy C276 tubes?
A1: Chemical processing, acid plants, heat exchangers, wastewater treatment, and environmental equipment.
Q2: Can C276 tubes replace stainless steel?
A2: Yes, in aggressive acid environments where stainless steel fails.
Q3: Are C276 tubes weldable?
A3: Yes, following proper procedures to maintain corrosion resistance.
Q4: Which acids are suitable for C276 tubing?
A4: Sulfuric, hydrochloric, nitric, phosphoric, and mixed acids.
Q5: What certifications should accompany C276 tubes?
A5: ASTM B622 compliance, UNS N10276, EN 10204 3.1, PMI and hydrostatic testing reports.
Conclusion
Hastelloy C276 tubes are the preferred choice for chemical processing, heat exchangers, reactors, and environmental systems due to their unmatched corrosion resistance, mechanical strength, and long service life. Selecting certified tubes ensures safety, reliability, and reduced maintenance costs in aggressive industrial applications.
Contact Us:
For expert guidance on selecting Hastelloy C276 Tube, contact TSM Technology. Our technical team is ready to support your project with professional titanium solutions.
Email: info@tsm-titanium.com
We are always at your service when you need
TSM Technology, one of the leading Asian suppliers of high-performance titanium-based materials in China, specializes in factory-made products such as titanium tubes, welded titanium pipes and fittings, titanium flanges, titanium fasteners and nuts, titanium plates and rods, among others.
They are widely used in the construction of heat exchangers, condensers, power plants, seawater desalination facilities, oil and gas pipelines, chlor-alkali plants, and other related fields.
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