S235JR vs DX51: Comparing Two Popular Steel Grades

Specifications of S235JR vs. DX51:

Mechanical Composition:

– S235JR: This steel grade has a minimum yield strength of 235 MPa and a tensile strength of 360-510 MPa. It also has excellent plasticity, toughness, and weldability. In addition, S235JR is known for its low carbon content, making it suitable for applications requiring a lower carbon steel grade.

– DX51: This steel grade is mainly used for cold-forming applications, such as making parts for vehicles, appliances, and building materials. It has a minimum yield strength of 270-500 MPa and a tensile strength of 330-590 MPa. DX51 is known for its good formability and excellent corrosion resistance.

Chemical Composition:

– S235JR: The chemical composition of S235JR steel typically includes 0.17% carbon, 1.40% manganese, 0.035% phosphorus, 0.035% sulfur, 0.012% nitrogen, and iron as the remaining element. Additionally, S235JR may contain small amounts of other elements such as silicon, copper, and chromium.

– DX51: The chemical composition of DX51 steel typically includes 0.20% carbon, 1.60% manganese, 0.045% phosphorus, 0.035% sulfur, 0.012% nitrogen, 0.60% silicon, and iron as the remaining element. DX51 may also contain small amounts of other elements such as chromium and nickel.

Overall, both S235JR and DX51 are popular steel grades used in various industries. S235JR is commonly used in general structural applications, while DX51 is mainly used for cold-forming applications. The choice between these steel grades depends on the specific requirements and intended use of the steel product.