Is ASTM A36 equivalent to S235JR?

ASTM A36 is generally considered to be equivalent to S235JR steel (EN 1.0038). Both ASTM A36 and S235JR are commonly used mild steel grades with similar chemical composition and mechanical properties.

Here are the key similarities between ASTM A36 and S235JR:

Chemical Composition: Both ASTM A36 and S235JR have a similar chemical composition, with carbon (C), manganese (Mn), phosphorus (P), sulfur (S), silicon (Si), and trace amounts of other elements. The precise composition may vary slightly depending on the specific product standards and requirements.

Mechanical Properties: ASTM A36 and S235JR have comparable mechanical properties. They both have a minimum yield strength of approximately 36,000 psi (250 MPa) and a tensile strength of around 58,000-80,000 psi (400-550 MPa). These properties make them suitable for general structural applications.

Common Applications: Both ASTM A36 and S235JR are widely used in various industries for structural and construction purposes. They are commonly employed in building frames, bridges, machinery parts, and other structural components where good strength and ductility are required.

However, it's important to note that while ASTM A36 and S235JR have many similarities, there may be slight differences in certain aspects, such as specific tolerances, surface finishes, or impact properties. It's recommended to consult the relevant standards (ASTM and EN) or contact the manufacturer for precise information on each specific grade and its suitability for a particular application.