Hastelloy C276 corrosion-resistant pipe for chemical industry
Hastelloy C276 pipe, a nickel-based high-temperature alloy, is widely used in the chemical industry for its excellent corrosion resistance, particularly in corrosive environments such as acid, chloride, and seawater. Its key advantages include excellent performance in both oxidizing and reducing conditions, good weldability, and high-temperature resistance. However, its performance is limited in some extremely harsh environments, such as high-temperature concentrated nitric acid. Proper installation, support, and regular cleaning are essential to maintain the performance and service life of the pipe.
What is the chemical compatibility of C-276 alloy?
C-276 alloy exhibits excellent resistance to sulfuric acid, hydrochloric acid, formic acid, acetic acid, chlorides, solvents, wet chloride gas, hypochlorite, and chlorine solutions. C-276 alloy also exhibits excellent resistance to phosphoric acid at all temperatures below its boiling point and concentrations below 65%.
Chemical Analysis of Alloy C276 Tube (UNS N10276)
C |
MN | P | S | Si | Cr | Ni | Mo | Cu | Co | Cb+Ta | Ti | Al | Fe | W | V |
| .01 max | 1.00 max | .04 max |
.03 max | .08 max | 14.5 - 16.5 | rem | 15.0 -17.0 | 2.5 max | 4.0 - 7.0 | 3.0 - 4.5 | .35 max |
Corrosion Resistance
Corrosion Resistance: Resistant to aggressive chemicals, including sulfuric acid, hydrochloric acid, formic acid, hypochlorite, wet chloride gases, and many other oxidizing and reducing media.
Corrosion Resistance: Resistant to chloride-induced stress corrosion cracking, pitting, and crevice corrosion.
Applications: Seawater and sour gas oilfield environments.
Limitations: Extremely harsh oxidizing conditions, such as hot concentrated nitric acid.
Mechanical Properties and Fabrication
High-Temperature Performance: Withstands temperatures up to 1900°F (1037°C).
Fabrication: Can be easily welded using common methods and is ductile and easily formable.
Mechanical Properties: Minimum tensile strength of 100 ksi (690 MPa), minimum elongation of 40%.
Heat Treatment: Wrought products are typically supplied heat-treated, with annealing temperatures between 2050°F and 2150°F (1121°C and 1177°C).
Alloy C276 Pipes Standard Quality Specification
| Specifications | ASTM B 622 ASME SB 622 / ASTM B 619 ASME SB 619 |
| Dimensions | ASME, ASTM, and API |
| Size | 15″NB upto 150″NB IN |
| Specialized in | Sizes in Large Diameter |
| Schedule | Schedule 5, 10, 40, STD, 80, 160 |
| Type | ERW / Seamless / Welded / LSAW Pipes / Fabricated |
| Form | Hydraulic, Round, Etc |
| Length | Double Random, Single Random, & Cut Length. |
| End | Beveled End, Plain End, Treaded |
Alloy C276 Din 2.4819 Pipes Mechanical Properties Chart
| Density | Yield Properties (0.2%Offset) | Melting Point | Elongational | Tensile Properties |
| 8.89 g/cm3 | Psi – 52,000 , MPa – 355 | 1370 °C (2500 °F) | 40 % | Psi – 1,15,000 , MPa – 790 |
Gnee Steel specializes in the production and sale of various nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel Alloy 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy Alloy 800, Incoloy 800H/HT, Incoloy 825, Monel Alloy 400, Monel K500, and high-temperature alloys. Gnee Steel's products are widely used in aerospace, chemical, electric power, automotive, and nuclear energy applications. We also offer customized alloy solutions tailored to customer needs. For alloy pricing inquiries or customized alloy solutions, please contact us for a quote at ss@gneesteel.com.
