Seamless Hastelloy C-276 Pipes Superior Resistance

Introduction
Hastelloy C-276 is a high-performance nickel-molybdenum-chromium alloy known
for its exceptional corrosion resistance in harsh environments. Seamless
Hastelloy C-276 pipes are widely used in industries that require durable and
reliable piping solutions, such as chemical processing, marine applications,
and power plants. Their superior resistance to oxidizing and reducing agents
makes them an ideal choice for handling aggressive fluids and gases.

Material Overview
Hastelloy C-276 (UNS N10276) is a nickel-based alloy with the following
composition:
Nickel (Ni): 57% minimum
Molybdenum (Mo): 15-17%
Chromium (Cr): 14.5-16.5%
Iron (Fe): 4-7%
Cobalt (Co): 2.5% maximum
Tungsten (W): 3-4.5%
Other Elements: Small amounts of manganese, silicon, and carbon
This alloy is highly resistant to pitting, crevice corrosion, and stress
corrosion cracking, making it suitable for extreme chemical and high-
temperature environments.

Applications
Seamless Hastelloy C-276 pipes are utilized in a variety of demanding
applications, including:
Chemical Processing: Used in reactors, heat exchangers, and piping systems
for handling acidic and corrosive substances such as sulfuric acid,
hydrochloric acid, and nitric acid.
Marine Industry: Ideal for seawater piping systems due to its excellent
resistance to saltwater corrosion and biofouling.
Power Plants: Used in flue gas desulfurization systems, heat recovery units,
and superheaters where high-temperature resistance is required.
Aerospace & Defense: Applied in fuel and hydraulic systems where extreme
environmental conditions demand high corrosion resistance.
Pharmaceutical & Food Processing: Ensures contamination-free processing due
to its non-reactive nature with various chemicals and high purity standards.

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Grades & Standards
Hastelloy C-276 seamless pipes conform to several international standards,
ensuring quality and performance:
ASTM B622: Specification for seamless nickel alloy pipe and tube.
ASME SB622: Equivalent to ASTM B622 but for boiler and pressure vessel
applications.
DIN 17751: German standard for nickel alloy pipes.
EN 10216-5: European standard for seamless nickel-based pipes.
ISO 6207: International standard covering nickel alloy pipes.

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