S235JR Carbon Steel: The "Cornerstone" of Industrial Infrastructure

S235JR is a non-alloy structural steel under the European standard (EN 10025-2). The "S" denotes structural steel, "235" indicates a minimum yield strength of 235 MPa, and "JR" signifies the steel meets impact test requirements at room temperature (20°C), ensuring moderate toughness.

Characteristics:

Cost-Effective: As a common carbon structural steel with a simple composition, it offers economical performance for most conventional applications.

Excellent Workability: Easily welded, cut, and formed, making it suitable for manufacturing various components.

Chemical Composition (typical ranges):

Carbon (C): 0.14–0.22%

Manganese (Mn): 0.40–1.00%

Silicon (Si): 0.10–0.40%

Phosphorus (P) ≤ 0.045%, Sulfur (S) ≤ 0.045% (strict control of impurities).

These elements balance basic strength and toughness.

Applications:

Construction: Widely used in ordinary industrial and civil buildings, such as steel frames for small factories and support components for houses.

Mechanical Manufacturing: Ideal for low-stress parts like brackets and bases.

General Fabrication: Used in simple metal products like railings and shelves, serving as a fundamental material in industrial infrastructure.