Products Description
Our Advantages
1. Reliable Corrosion Resistance
- Hastelloy C276 Seamless Pipe exhibits excellent corrosion resistance to alternating redox reactions, chlorine-containing media, sulfur-containing media, strong acids, and high temperatures, making it suitable for chemical processing, marine applications, and other fields.
- Our pipes are manufactured using hot extrusion and cold drawing processes, eliminating weld defects, gap corrosion, and cracking risks. They have also undergone corrosion resistance testing, including pitting corrosion testing.
2. High Temperature and Pressure Resistance
- Our pipes undergo rigorous mechanical property testing and can stably withstand approximately 220 MPa of pressure at 600°C, making them ideal for high-temperature and high-pressure applications such as high-pressure heat exchangers.
- The pipes undergo ultrasonic and eddy current testing to ensure the absence of internal cracks, porosity, and other defects, eliminating the risk of leakage and deformation under high-pressure conditions.
3. Hydration-Resistant Weldability
- Hastelloy C276 Seamless Pipe possesses excellent weldability. Strict control of carbon content during production and a solution heat treatment process ensures that no additional annealing is required after welding.
- Our tubing supports TIG and MIG welding processes, eliminating the need for post-weld heat treatment, making it ideal for critical applications such as heat exchangers, chemical reactors, and marine systems.
4. Machinability
- Our tubing exhibits excellent cold working, hot working, and machining properties, supporting precision machining processes such as cold bending, rolling, flaring, drilling, turning, and milling.
- We offer custom-sized services, tailoring tubing to specific customer application conditions, including U-shaped tubes, bends, surface treatments, and mechanical properties.
application areas
- Chemical Processing: Reactors, heat exchangers, and piping systems for hydrochloric and sulfuric acids.
- Pollution Control Equipment: Flue Gas Desulfurization scrubbers, ducting, and chimney liners.
- Power Generation: Condensers, heat exchangers, and desulfurization systems.
- Aerospace: Engine exhaust components exposed to corrosive and high-temperature conditions.
- Marine/Offshore: Piping systems exposed to seawater and saltwater environments.
Chemical Composition
| Element | Ni (%) | Mo (%) | Cr (%) | Fe (%) | W (%) | Co (%) | Mn (%) | Si (%) | C (%) | S (%) |
| Hastelloy C276 | 57.0 min | 15.0–17.0 | 14.5–16.5 | 4.0–7.0 | 3.5–4.5 | 2.5 max | 1.0 max | 0.08 max | 0.01 max | 0.02 max |
Mechanical Properties
| Property | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) | Impact Strength |
| Hastelloy C276 | 550 min (80,000 psi) | 205 min (30,000 psi) | 40 min | 180–250 | Excellent, even at sub-zero temperatures |
Possible Alternative Grades
| Alternative Grades | Reasons |
| Hastelloy C22 | Higher oxidation resistance than C276 |
| Inconel 625 | High strength and oxidation resistance, widely used in aerospace and marine environments |
| Alloy 20 | Cost-effective solution for sulfuric acid treatment, but less stable in mixed environments |
| Titanium Grades 2 /7 | Lightweight and corrosion-resistant in certain environments, but less resistant to high temperatures than C276 |
Products Show
Testing Equipment
Factory Equipment
Pickling equipment
Products Package
FAQ
Q: What corrosive media can C276 Seamless Pipe resist?
A: Our pipes are resistant to strong acids (hydrochloric acid, phosphoric acid, acetic acid, etc.), chlorine/sulfur-containing media, and alternating redox media.
Q: What surface treatments are available?
A: We offer pickling and passivation, bright annealing, mechanical polishing, electropolishing, and custom surface treatments.
Q: How do you ensure product quality?
A: Our pipes undergo rigorous quality testing from raw materials to finished products. The quality of each pipe is traceable, ensuring compliance with ASTM B622 standards or customer requirements.
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