Hastelloy C276 is a nickel-based alloy (57% Ni, 16% Cr, 16% Mo, 4% W) renowned for its superior corrosion resistance. Widely used in chemical processing, pulp and paper, wastewater treatment, and oil/gas industries, it resists strong acids, oxidative environments, and chloride stress corrosion cracking. With excellent weldability and stability in high-temperature, high-pressure conditions, C276 is ideal for demanding corrosive environments.
Hastelloy C276 is a nickel-based alloy renowned for its exceptional corrosion resistance. Its primary components include Nickel (approximately 57%), Chromium (around 16%), Molybdenum (about 16%), and Tungsten (approximately 4%). It also contains small amounts of Iron, Cobalt, Manganese, and other elements. This combination endows C276 with superior corrosion resistance, making it a widely used material in industries requiring high-performance alloys.
Hastelloy C276 is utilized in various demanding environments, including:
Chemical Processing
Pollution Control
Pulp and Paper Industry
Industrial and Municipal Wastewater Treatment
Marine Engineering
Oil and Gas Industry
It is particularly suitable for handling highly corrosive chemicals and operating under high-temperature and high-pressure conditions.
Corrosion Resistance
Hastelloy C276 offers excellent resistance to a wide range of aggressive chemicals, including sulfuric acid, hydrochloric acid, and phosphoric acid. It also withstands oxidative media such as chlorine, wet chlorine, and nitric acid. Its resistance to chloride-induced stress corrosion cracking is outstanding, maintaining stability even in extreme corrosive environments.
Weldability
Hastelloy C276 exhibits excellent weldability and can be welded using various methods such as TIG (Tungsten Inert Gas), MIG (Metal Inert Gas), SAW (Submerged Arc Welding), and manual welding. Preheating or post-weld heat treatment is typically not required, but controlling heat input is crucial to avoid hot cracking and ensure high-quality welds.
Compared to other nickel-based alloys, Hastelloy C276 provides broader corrosion resistance, particularly against chloride-induced stress corrosion cracking and uniform corrosion. Additionally, its stability under high-temperature and high-pressure conditions makes it a preferred material for many critical industrial applications.
