What is S275JR specification?

S275JR is a grade of structural steel that is commonly used in construction and engineering applications. It is part of the EN 10025 standard, which specifies the technical delivery conditions for non-alloy structural steels. The designation "S" stands for structural steel, "275" refers to the minimum yield strength in megapascals (MPa), and "JR" indicates that the material is suitable for Charpy V-notch impact testing at room temperature.

The specification for S275JR typically includes the following requirements:

Chemical Composition: The maximum values for the chemical composition are specified for elements such as carbon (C), manganese (Mn), phosphorus (P), sulfur (S), and nitrogen (N).

Mechanical Properties: S275JR has a minimum yield strength of 275 MPa and a minimum tensile strength of 410-560 MPa. These properties may vary depending on the thickness of the material.

Impact Testing: S275JR is characterized by its suitability for Charpy V-notch impact testing at room temperature, denoted by the "JR" designation.

Dimensional and Shape Requirements: The standard covers various dimensional and shape tolerances for S275JR, including thickness, width, length, and flatness.

It's important to refer to the specific version of the EN 10025 standard or consult the relevant specifications to obtain the detailed requirements for S275JR steel in a particular context.

What steel grade is equivalent to S275JR?

The steel grade that is often considered equivalent to S275JR is ASTM A36. Both S275JR and ASTM A36 are structural steels with similar mechanical properties and chemical compositions. They have a minimum yield strength of 275 MPa (275 N/mm²) and share common characteristics, making them suitable for various structural applications. However, it's important to consult the relevant standards and specifications for specific projects to ensure the appropriate material choice.