The chemical composition of S355J0WP steel plate mainly includes the following elements:
1. Carbon (C): Its content ranges from 0.12-0.20%, which can provide the required strength and hardness of the steel plate.
2. Silicon (Si): Its content ranges from 0.30-0.75%, which can improve the strength and cold working performance of the steel plate.
3. Manganese (Mn): Its content ranges from 0.25-0.50%, which can provide the strength and toughness of the steel plate.
4. Sulfur (S): Its content ranges from less than 0.035%. Controlling the sulfur content can improve the processing and welding performance of the steel plate.
5. Phosphorus (P): Its content ranges from less than 0.030%. Controlling the phosphorus content can improve the ductility and strength of the steel plate.
In addition, S355J0WP steel plate also contains a small amount of copper (Cu) and chromium (Cr), and its composition is as follows:
- Copper (Cu): Its content ranges from 0.25-0.55%, which can enhance the corrosion resistance of the steel plate.
- Chromium (Cr): Its content ranges from 0.30-1.25%, which can provide the steel plate with antioxidant and weather resistance.
The mechanical properties of S355J0WP steel plate are as follows:
1. Tensile Strength: The minimum tensile strength is 355 MPa.
2. Yield Strength: The minimum yield strength is 345 MPa.
3. Elongation: The minimum elongation is 22%.
4. Impact Toughness: It meets the requirements of European standard EN 10025-5 and has good impact toughness.
In general, S355J0WP steel plate has high strength, hardness and corrosion resistance, and has certain cold processing and welding properties, and is suitable for use in a variety of engineering fields.
1.
2.
Carbon ( Less than or equal to 0.19%) is kept low to maintain good weldability while balancing strength and ductility.
3. What are the typical mechanical property values for thickness Less than or equal to 16mm?
Yield strength Greater than or equal to 355MPa, tensile strength 490–630MPa, elongation Greater than or equal to 21%, and 0 degree impact energy Greater than or equal to 27J.
4.
Phosphorus ({{0}}.06–0.12%) strengthens the passive film on the surface, significantly improving atmospheric corrosion resistance.
5.
Yield strength decreases slightly as thickness increases, while tensile strength and elongation remain relatively stable (per EN 10025-5 standards).
