Difference between BV E460 and BV E500 steel plate

BV E460 is a high-strength shipbuilding steel plate certified by Bureau Veritas (BV). The "E" grade signifies it is impact tested at -40°C, making it suitable for structures in cold environments like arctic waters . It has a minimum yield strength of 460 MPa and tensile strength ranging from 570 to 720 MPa, with minimum elongation of 17% . The chemical composition is strictly controlled with carbon ≤0.20%, manganese ≤1.70%, and silicon ≤0.55% . This grade is typically supplied in normalized, quenched and tempered (QT), or thermomechanical controlled processed (TMCP) conditions . It is widely used for hull construction, decks, bulkheads, and offshore platforms requiring high strength and excellent weldability.

BV E500 is an extra-high-strength marine steel also certified by Bureau Veritas (BV) with impact toughness tested at -40°C. The "500" denotes a minimum yield strength of 500 MPa . It has a tensile strength ranging from 610 to 770 MPa and minimum elongation of 16%. The chemical composition features carbon ≤0.20%, manganese ≤1.70%, and microalloying elements such as Nb, V, and Ti for enhanced properties . This grade requires advanced processing and is typically supplied in quenched and tempered (QT) or TMCP conditions. It is designed for demanding structural components in ships, offshore drilling units, and marine equipment requiring superior strength-to-weight ratio.

Both BV E460 and BV E500 are BV-certified high-strength marine steels with excellent low-temperature toughness tested at -40°C, ensuring reliable performance in harsh marine environments . Their primary difference lies in strength level: E460 offers a minimum yield strength of 460 MPa with tensile strength of 570-720 MPa, suitable for high-strength hull construction and offshore structures , while E500 provides a higher minimum yield strength of 500 MPa with tensile strength reaching 610-770 MPa, designed for more demanding load-bearing applications . Both grades feature controlled chemical composition with carbon ≤0.20% and manganese ≤1.70% , and require advanced processing like QT or TMCP to achieve their mechanical properties while maintaining good weldability for marine service.

Chemical Composition

Mechanical Property