There are several factors that differentiate S235JR and DX51, including their mechanical composition, yield value and tensile value, chemical composition, usage areas, and production limits.
1. Mechanical Composition: S235JR is a structural steel that has a minimum yield strength of 235 megapascals (MPa) and a tensile strength of 360-510 MPa. In contrast, DX51 is a galvanized steel that has a yield strength of 140-250 MPa and a tensile strength of 270-500 MPa.
2. Chemical Composition: S235JR primarily consists of carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), and aluminum (Al). DX51, on the other hand, is a galvanized steel that is coated with zinc and therefore has a different chemical composition.
3. Usage Areas: S235JR is commonly used in the construction industry for structural applications, such as building frames, bridges, and machinery bases. DX51, as a galvanized steel, is used for a variety of applications that require corrosion resistance, such as roofing, cladding, automotive parts, and appliances.
4. Production Limits: S235JR is produced according to European standard EN 10025-2, while DX51 is produced according to European standard EN 10346. These standards define the technical requirements and tolerances for each steel grade, ensuring consistent quality during production.
5. Industries: S235JR is commonly used in the construction industry, including in the manufacturing of buildings, infrastructure, and machinery. DX51, being a galvanized steel, is typically used in various industries where corrosion resistance is required, such as automotive, construction, and appliance manufacturing.