Hastelloy explained
Hastelloy is a high-performance family of nickel-based superalloys engineered to deliver exceptional resistance to corrosion, oxidation, and high-temperature degradation in the harshest industrial environments. Unlike stainless steels, which rely on chromium for corrosion resistance, Hastelloy alloys contain carefully balanced additions of nickel, molybdenum, and chromium, providing superior protection against localized corrosion such as pitting, stress corrosion cracking, and crevice attack. Compared to conventional stainless steels and other nickel alloys, Hastelloy offers far greater durability in aggressive chemical environments, including strong acids, chlorides, and reducing/oxidizing conditions. Hastelloy is available in several key grades—most notably C22, C276, and B2—each engineered for specialized performance in chemical processing, petrochemical systems, pollution control equipment, pharmaceuticals, and high-temperature operations.
The materials we supply undergo a comprehensive range of quality assurance procedures, including eddy current testing, hydrostatic testing, ultrasonic examination, and other essential NDT methods, along with detailed chemical and mechanical property evaluations. Each product is thoroughly inspected at multiple stages of manufacturing to ensure it is free from defects and suitable for demanding industrial applications. Our rigorous testing standards guarantee consistent quality and reliability. In addition, all products are manufactured in accordance with relevant industry norms and specifications, making them fully compliant and widely accepted in both domestic and international markets.
Hastelloy C22
- Nickel–Chromium–Molybdenum–Tungsten superalloy
- Exceptional resistance to pitting & crevice corrosion
- Superior performance in both oxidizing & reducing media
- Excellent resistance to chlorides & acidic environments
- Minimum tensile strength: ~690 MPa
- Outstanding weldability with minimal carbide precipitation
- Ideal for chemical reactors, scrubbers & pollution control
- Resists wet chlorine gas & hypochlorite solutions
- Preferred when maximum corrosion protection is required
Hastelloy C276
- Nickel–Molybdenum–Chromium alloy with tungsten
- One of the most corrosion-resistant alloys available
- Excellent resistance to stress corrosion cracking
- Highly effective in strong acids, chlorides & reducing media
- Minimum tensile strength: ~750 MPa
- Outstanding performance in high-temperature environments
- Ideal for chemical processing, pulp & paper, offshore & petrochemicals
- Resistant to ferric & cupric chlorides, seawater & sour gas
- Best choice for extremely corrosive, high-stress conditions
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