ASTM A572 steel is a high-strength, low-alloy structural steel that is widely used in various construction and engineering applications due to its excellent mechanical properties and weldability. It is produced in grades 42, 50, 55, 60, and 65. The closest equivalent to ASTM A572 steel in other standards are:
Chinese GB Standard: Q345
Q345B (equivalent to A572 Gr.50) and Q345C (equivalent to A572 Gr.60) are close equivalents.
European EN Standard: S355J2-steel_4448.html target=_blank class=infotextkey>S355JR, S355J2, S355J0
These grades are closest to A572 Grade 50.
Japanese JIS Standard: SM490, SM490A, SM490B, SM490C
These grades are similar to A572 Grade 50.
ASTM A572 Grade 50: Typically used for structural applications where impact resistance and strength are needed. It has a minimum yield strength of 50 ksi (345 MPa).
Q345 (Chinese GB Standard): Provides similar properties to A572 Grade 50, with slightly different mechanical properties and chemical composition.
S355JR, S355J2, S355J0 (European EN Standard): These grades offer high yield strength and excellent weldability, suitable for structural use in construction and engineering.
SM490, SM490A, SM490B, SM490C (Japanese JIS Standard): These grades are widely used in welded structures such as bridges and ships, similar to A572 Grade 50 in terms of strength and application.
When considering equivalents, it's important to verify specific requirements such as mechanical properties, chemical composition, and intended application to ensure compatibility with the desired standard and project specifications.
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