S355 High Strength Structural Steel
S355 is one of the most widely used structural steel grades in manufacturing and fabrication, valued for its balance of strength, ductility, and weldability. With a minimum yield strength of 355 MPa (51,500 psi), it delivers reliable performance in construction, machinery, and transport applications where consistency and formability are essential. Available in plate, coil, sheet, and strip form, S355 is a versatile option that is a trusted choice across industries that demand dependable steel for everyday use.
Grades Designations
S355 is produced according to EN 10025-2, the specification for non-alloy structural steels. Its low carbon content, combined with controlled levels of manganese and silicon, gives it excellent weldability and formability. Variants such as S355J2, S355K2, and S355JR provide enhanced impact toughness at different test temperatures, ensuring the right performance level for varying service environments.
S355 Characteristics
Property
specification
Weldability
S355 can be welded using all conventional methods without risk of cracking or loss of toughness.
Thermal Cutting
This grade responds well to laser, plasma, and oxy-fuel cutting.
Bendability
S355 can be bent, pressed, or rolled to precise tolerances without compromising strength.
Ease of Fabrication
S355 is easy to machine, bend, and form using standard shop practices.
S355 is used across multiple industries where performance and versatility are key, including:
- Construction and building frameworks
- Truck and trailer manufacturing
- Agricultural and forestry equipment
- Material handling and lift systems
- General structural fabrication
