ASTM A 516 GR.70 NACE + HIC Plates – Sour Service HIC & SSC Tested Steel

Conquest Steel & Alloys supplies premium ASTM A 516 GR.70 NACE + HIC Plates, specially designed for sour service applications where hydrogen sulfide (H₂S) exposure is critical. These boiler-quality carbon steel plates comply with NACE MR0175 standards and undergo testing for Hydrogen-Induced Cracking (HIC) and Sulfide Stress Cracking (SSC), ensuring maximum reliability in pressure vessels, storage tanks, and process equipment for oil, gas, and petrochemical industries.

Manufactured with controlled chemistry, these plates offer excellent toughness, weldability, and tensile strength, minimizing the risk of sour-service failures. Supplied in normalized condition with mill test certificates, they are suitable for demanding industrial operations in both onshore and offshore environments.

Key Features of ASTM A516 GR.70 NACE + HIC Plates

• Certified NACE MR0175 / MR0103 compliant

• HIC and SSC tested for sour service safety

• High toughness, tensile strength, and corrosion resistance

• Supplied in normalized condition with MTC

• Available in multiple thicknesses, widths, and lengths

Applications of ASTM A516 GR.70 NACE + HIC Plates

• Pressure vessels exposed to sour gas

• Boilers and storage tanks in chemical & petrochemical plants

• Oil & gas refineries and offshore platforms

• Hydrogen sulfide (H₂S) containing environments

• Heat exchangers and moderate-pressure industrial vessels

ASTM A 516 GR.70 NACE + HIC Specification: