Carbon SA 516 Grade 65 HIC Steel Plates are specifically manufactured to combat hydrogen-induced cracking (HIC), making them a reliable choice for use in sour service environments such as oil refineries, gas processing plants, and offshore platforms. These plates are produced with a controlled chemical composition and refined microstructure to offer superior resistance to hydrogen damage, ensuring operational safety where hydrogen sulfide (H₂S) exposure is a concern.
When I recommend SA 516 Grade 65 HIC plates, it’s typically for pressure vessels, storage tanks, and separators where resistance to brittle fracture and internal cracking is crucial. These plates undergo rigorous testing, including HIC and SSC (Sulfide Stress Cracking) evaluations, to confirm their suitability for use in environments with wet H₂S gas. With a minimum tensile strength of 460–620 MPa and excellent notch toughness, these plates perform reliably even under fluctuating pressure and temperature conditions.
What I appreciate most about this material is its weldability and formability. Despite being engineered for high-resistance applications, SA 516 Grade 65 HIC plates offer ease of fabrication. I’ve seen them perform exceptionally well in both field-erected and shop-fabricated equipment. They are also available in normalized condition, which further enhances their toughness and structural consistency across large plate sections.
Each plate I source is fully traceable and supplied with complete documentation, including Mill Test Certificates (MTCs), ultrasonic test reports, and HIC test results. This level of transparency is essential when supplying to critical sectors where inspection authorities demand strict compliance with international standards such as ASTM, ASME, NACE, and EN.
For any application where sour gas service is involved and long-term integrity is vital, I recommend Carbon SA 516 Grade 65 HIC Steel Plates with full confidence. Their proven resistance to hydrogen-induced failure, combined with dependable mechanical strength and consistent quality, make them the industry’s go-to solution for safe and efficient pressure equipment.