API Sour Service Steel Grades

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Made in the U.S.A. for more than 100 years

An unfavorable combination of H2S dissolved in water, low pH, susceptible structure and high tensile loads could cause cracks to occur in steel pipes, and propagate until failure.

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Our sour service grades (SS) are designed to prevent sulfide stress cracking (SSC) failures when used in the appropriate domain.

The improved resistance to SSC is obtained through a specific design of the steel chemistry and a tight control of microstructure and mechanical properties. Only state-of-the-art facilities can achieve this result.

Our SS steel grades are available in minimum yield strength ranging from 80 up to 125 ksi, thanks to our high collapse and sour service (HS) series adding enhanced collapse resistance.

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