S355J2 is a low carbon structural steel grade. S355J2 carbon structural steel is one of the Charpy designations that belongs to structural grade S355 (S). S355J2 carbon structural steel is a manganese steel with low carbon content and tensile strength, and it is easily weldable and has good impact resistance (also in sub-zero temperatures). S355J2 carbon structural steel can be supplied in untreated or standardized condition (+ N).

For carbon structural steel grade S355J2 meaning, grade S355J2 is called S355 because of its average minimum yield is 355 Mpa. “S” is short for “structural steel”. J2 means doing  -20 temperature Charpy V-notch impacting test.

Carbon structural steel grade S355J2 material has excellent strength and weldability. S355J2 steel is widely used in engineering and construction industries.