Hastelloy C276 vs SS316 – What’s the Difference

Hastelloy C276 vs SS316

Choosing the right metal for your project can greatly impact its success. With so many options available, it can be overwhelming to determine which metal is the best choice. Two popular options for corrosive environments are Hastelloy C276 and SS316. Understanding the differences between these metals can help you make an informed decision for your next project.

Hastelloy C276 and SS316 are corrosion-resistant metals but have different strengths and weaknesses. The primary difference between the two is their composition. Hastelloy C276 is a nickel-molybdenum-chromium alloy, while SS316 is an austenitic stainless steel alloy with added molybdenum. Hastelloy C276 has a higher resistance to corrosion in harsh environments, including sulfuric acid, hydrochloric acid, and chloride environments. It also has a higher resistance to pitting, stress corrosion cracking, and crevice corrosion than SS316. SS316 is more suited for favourable environments with lower chloride and sulfuric acid levels. It is also more cost-effective than Hastelloy C276.

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Another difference between Hastelloy C276 and SS316 is their strength. Hastelloy C276 has a higher tensile strength and yield strength, making it a better choice for high-pressure applications. However, SS316 has better flexibility, which means it can be formed into more complex shapes and structures. SS316 is also easier to weld and has better machinability than Hastelloy C276.

Regarding temperature resistance, Hastelloy C276 can withstand higher temperatures compared to SS316. Hastelloy C276 can withstand temperatures up to 1900°F (1038°C), while SS316 can only withstand temperatures up to 1500°F (815°C). This makes Hastelloy C276 a better choice for high-temperature applications, including chemical processing, aerospace, and industrial heating.

While both metals have their strengths and weaknesses, choosing the right one for your project will depend on your requirements. Hastelloy C276 is better if your project requires high corrosion and high-temperature resistance. On the other hand, if cost-effectiveness, ductility, and machinability are your top priorities, SS316 may be the better option.


Choosing the right metal for your project can be challenging, but understanding the differences between metals can make decision-making easier. Hastelloy C276 and SS316 are excellent corrosion-resistant metals but have different strengths and weaknesses. Hastelloy C276 is better suited for high-corrosive, high-temperature applications, while SS316 is better suited for mild corrosive environments. Ultimately, the choice between the two will depend on your project’s specific requirements, including temperature, cost, strength, and corrosion resistance.



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