ASTM B619 UNS N10276 Nickel Alloy Pipe Hastelloy C276 Welded Pipe

ASTM B619 UNS N10276 / 2.4819 Hastelloy C-276 Welded Pipe

Equivalent Grades for Hastelloy C276 Pipe

Hastelloy C276 Pipe Chemical Composition

Hastelloy C276 Pipe Mechanical Properties

Key Characteristics of B619 C276 Welded Pipe

• Manufacturing: Typically made from rolled and welded sheet or plate. The weld seam is usually heat-treated (solution annealed) to restore corrosion resistance.

• Low-Carbon Welded Version: The B619 standard, combined with the C276 chemistry, ensures a low-carbon product. This is crucial to prevent carbide precipitation in the heat-affected zone of the weld, which could become a site for corrosion attack.

• Superior Corrosion Resistance: Resists a vast array of corrosive media, including:

  • Wet chlorine gas, hypochlorite, and chlorine dioxide

  • Sulfuric, hydrochloric, and phosphoric acids

  • Mixed acids (e.g., HNO3/HF used in pickling)

  • Seawater and brine solutions

  • Contaminated phosphoric acid (containing fluorides and chlorides)

• Cost-Effectiveness (vs. Seamless): For larger diameters and thinner walls, welded pipe (ASTM B619) is often more economical than seamless pipe (ASTM B622), while meeting the same performance criteria for many applications.

Hastelloy is a renowned group of high-performance, corrosion-resistant superalloys, predominantly nickel-based. They are alloyed with substantial amounts of molybdenum, chromium, and other elements to achieve exceptional strength and durability in aggressive, high-temperature environments. These specialized materials are engineered for critical applications in industries like chemical processing and aerospace, where conventional materials are inadequate.